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Electrical Engineering (EE)
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Sandhya Pagutla Pagutla
asked
• 24 minutes ago
Match List- I (Theorem/Law) with List- II (Property) and select the correct answer using the codes given below the lists:
List - I
A. Norton’s theorem
B. Superposition theorem
C. Thevenin’s theorem
D. Kirchhoff’s current law
List - II
1. Effects of independent sources in a linear circuit are additive.
2. Law of non-accumulation of charge holds good at nodes.
3. Current source with shunt resistor.
4. Voltage source with series resistor.
Codes:
a)
a
b)
b
c)
c
d)
d
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Madhuliknice Song Satyaj
asked
• 44 minutes ago
using mesh analysis find the amount of current in 1omh and 2omh resistance
Related:
Chapter 1 Basic Electrical - Notes, Circuit Theory, Electrical Engineering
?
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Answer
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Chikku Gopal
asked
• 1 hour ago
In a JFET, drain current is primarily controlled by
a)
size of depletion region
b)
channel resistance
c)
gate reverse bias
d)
voltage drop across channel
Correct answer is option 'C'. Can you explain this answer?
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Answer
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Ramya Sri
asked
• 1 hour ago
A synchronous motor is switched on to supply with its field winding shorted on themselves it will
a)
not start
b)
start but continue to run as an induction motor
c)
starts as an induction motor and then run as a synchronous motor
d)
none of these
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Sunil Manjani
asked
• 1 hour ago
One of the following consists of no resonant antennas:
a)
The rhombic antenna
b)
The folded dipole
c)
The end-fire array
d)
The broadside array
Correct answer is option 'A'. Can you explain this answer?
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Answer
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Lol Video
asked
• 1 hour ago
Temperature measuring instruments are standardised mostly with __________ points of pure substances.
a)
melting
b)
boiling
c)
both (a) & (b)
d)
neither (a) nor (b)
Correct answer is option 'C'. Can you explain this answer?
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Mallikarjun Huddar
asked
• 1 hour ago
In an armature, if m is the number of slots per pole per phase and γ is the slot pitch angle, then the breadth or the distribution factor for the armature winding is
a)
b)
c)
d)
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Kamani Sravankumar Srava
asked
• 1 hour ago
When the stator windings are connected in such a fashion that the number of poles are made half, the speed of the rotor of a synchronous motor
a)
remains same as the original value
b)
decreases to half the original value
c)
tends to becomes zero
d)
increases to two times the original value
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Notfake Fake
asked
• 1 hour ago
The transmission loss calculations reveal that a transfer of 100 MW from plant 1 to 2 means a loss of 10 MW. Find the required generation at each plant for λ=25. Assume that the incremental costs of the two plants are given b
...
more
y .?
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Answer
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Bhayu Goswami
asked
• 2 hours ago
The phasor diagram of a synchronous machine connected to an infinite bus is shown in the figure. The machine is acting as a
a)
generator and operating at a lagging power factor
b)
generator and operating at a leading power factor
c)
motor and operating at a leading power factor
d)
motor and operating at a lagging power factor
Correct answer is option 'A'. Can you explain this answer?
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Answer
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Potu Madhavi
asked
• 2 hours ago
Horse power is the unit of
a)
Electrical energy
b)
Work
c)
Power
d)
Force
Correct answer is option 'C'. Can you explain this answer?
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Answer
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Indrajit Mal
asked
• 2 hours ago
Wooden cross arms are used for supporting
a)
overhead lines
b)
underground lines
c)
the transformers
d)
the insulators
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Divya Kanthikar
asked
• 2 hours ago
Needed a Video for electric machine?
Related:
GATE Notes & Videos for Electrical Engineering
?
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Answer
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Reetika Pradhan
asked
• 2 hours ago
In a digital system ,there are three inputs A,B,C .The output should be high when at least 2 inputs are high .The minimized boolean expression for the output is?
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Answer
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Indrajit Mal
asked
• 2 hours ago
A pure capacitance connected across 50Hz, 230V supply consumes 0.04W. This consumption is attributed to
a)
ohmic loss due to ohmic resistance of plates
b)
loss of energy in dielectrics
c)
capacitive reactance in ohms
d)
both (a) & (b)
Correct answer is option 'D'. Can you explain this answer?
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Raju Parihar
asked
• 3 hours ago
Consider the following statements:
When compared with a bridge rectifier, a centre tapped full wave rectifier:
1. Has larger transformer utilization factor.
2. Can be used for floating output terminalsi.e. no input terminal is grounded.
3. Needs two diodes instead of four.
4. Needs diodes of a lower PIV rating.
Which of these statements is/are correct?
a)
1 and 2 only
b)
1, 2 and 3
c)
3 only
d)
3 and 4 only
Correct answer is option 'A'. Can you explain this answer?
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Dodda Prashant Prashant
asked
• 3 hours ago
In a photodiode the current is due to
a)
majority carriers
b)
minority carriers
c)
both majority and minority carriers
d)
either (a) or (b)
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Indrajit Mal
asked
• 3 hours ago
The welding transformer used in resistance welding will
a)
step up current
b)
step down current
c)
step up voltage
d)
step up power
Correct answer is option 'A'. Can you explain this answer?
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Answer
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K Jais Jais
asked
• 3 hours ago
Which of the following is of compare instruction in 8087? Answer A.FTST B.FPREM C.FPATAN D.FLDI?
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Answer
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Rashika Elango
asked
• 3 hours ago
A 3φ, 50 Hz, 400 V, induction motor with 10 poles, running at speed of 540 rpm. If the number of poles reduced to 8, the newoperating slip is____________
a)
0.1
b)
0.08
c)
0.28
d)
0.35
Correct answer is option 'C'. Can you explain this answer?
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Answer
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Yacr Almahruqi
asked
• 3 hours ago
A DC shunt generator generates 400V when running at 1800rpm.Determine how much percent the flux has to increase per pole, to generate 500V when running at 20rps
Related:
DC Shunt Generators
?
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Answer
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Vaishali More
asked
• 4 hours ago
Assuming accumulator contain A 64 and the carry is set (1).What will register A and (CY) contain after RAR?
a)
4 DH, 0
b)
D 3H, 0
c)
4 DH, 1
d)
53 H, 0
Correct answer is option 'B'. Can you explain this answer?
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Nitin Negi
asked
• 4 hours ago
The capacitance and loss angle of a given capacitor specimen are best measured by
a)
Wheatstone bridge.
b)
Maxwell bridge.
c)
Anderson bridge.
d)
Schering bridge.
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Rambali Mashiha
asked
• 4 hours ago
Maxwell's inductance capacitance bridge is used for measurement of inductance of
a)
low Q coil only
b)
medium Q coils only
c)
high Q coils only
d)
low & medium Q coils
Correct answer is option 'B'. Can you explain this answer?
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Mahesh547 Sandanaveni
asked
• 4 hours ago
If the number of conductors and speed of a lap wound generator is doubled then the generated emf will be
a)
Remains same
b)
Twice of the former
c)
Four times of former emf
d)
Half of the former emf
Correct answer is option 'C'. Can you explain this answer?
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Sunil Manjani
asked
• 5 hours ago
As a result of reflections from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater greater than the velocity of light in space. This is called the
a)
velocity of propagation
b)
normal velocity
c)
group velocity
d)
phase velocity
Correct answer is option 'D'. Can you explain this answer?
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Lucy
asked
• 5 hours ago
IF V
CC
= 15 V, V
CEQ
= 5 V and I
CQ
= 50 mA, the efficiency in class A operation is
a)
100%
b)
50%
c)
25%
d)
16.7%
Correct answer is option 'D'. Can you explain this answer?
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Potu Madhavi
asked
• 5 hours ago
When a line-to-ground fault occurs, the current in the faulted phase is 100 A. The zero-sequence current in this case will be :
a)
Zero
b)
33.3 A
c)
66.6 A
d)
100 A
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Sai Kiran
asked
• 5 hours ago
A small capacitance is added to a highly inductive circuit
a)
the angle between voltage & current will increase
b)
the pf will increase
c)
the pf will decrease
d)
the power drawn will decrease
Correct answer is option 'D'. Can you explain this answer?
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Answer
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AKASH SINGH
asked
• 5 hours ago
If the gain of the open loop system is doubled, the gain margin of the system is
a)
not affected
b)
doubled
c)
halved
d)
one fourth of original value
Correct answer is option 'C'. Can you explain this answer?
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अरविन्द कुमार कुमार
asked
• 5 hours ago
106.The accuracy of M.C. instrument as compared to M.I. instruments is –
a)
High
b)
Low
c)
Same
d)
Reasonable accurate
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Praveen Avupati
asked
• 5 hours ago
Power factor of an alternator driven by constant prime mover input can be changed by changing its
a)
speed
b)
load
c)
field excitation
d)
phase sequence
Correct answer is option 'C'. Can you explain this answer?
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Answer
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Taranhaar Kumar
asked
• 5 hours ago
Voltage remaining constant, if the frequency is increased then
a)
eddy current losses will decrease
b)
hysteresis loss will decrease
c)
eddy current losses will remain unchanged
d)
hysteresis losses will remain unchanged
Correct answer is option 'C'. Can you explain this answer?
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Bhayu Goswami
asked
• 5 hours ago
If the fault current is 3000 A for a relay with a plug setting of 50% and CT ratio of 1000 : 1,the plug setting multiplier would be
a)
1.5
b)
3
c)
4.5
d)
6
Correct answer is option 'B'. Can you explain this answer?
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Bojanapalli Prudhvi Sai
asked
• 6 hours ago
A 200 V dc motor takes a field current of 2 A to generate a back emf of 180 V. If the field winding resistance is 80 Ω, the resistance of the shunt field regulator is (A) 10 Ω (B) 20 Ω (C) 100 Ω (D) 180 Ω?
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Yoosuf Salman
asked
• 6 hours ago
Statement: There were different streams of freedom movements in colonial India carried out by the moderates, liberals, radicals, socialists, and so on. Which one of the following is the best inference from the above statement?
a)
The emergence of nationalism in colonial India led to our Independence
b)
Nationalism in India emerged in the context of colonialism
c)
Nationalism in India is homogeneous
d)
Nationalism in India is heterogeneous
Correct answer is option 'D'. Can you explain this answer?
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Vaishali More
asked
• 6 hours ago
The PC contains 0450 H and SP contains 08D 6 H. What will be content of P and SP following a CALL to subroutine at location 02 AFH?
a)
0453 H, 08 D 8 H
b)
0453 H, 08 D 4 H
c)
02 AFH, 08 D 8 H
d)
02 AFH, 08 D 4 H
Correct answer is option 'D'. Can you explain this answer?
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Jay Kumar
asked
• 6 hours ago
For the same voltage boost, the reactive power capacity is
a)
more for shunt capacitor
b)
more for series capacitor
c)
it is the same for both series and shunt
d)
uncertain
Correct answer is option 'A'. Can you explain this answer?
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Dev Never Give Up
asked
• 6 hours ago
Two -insulator discs of identical capacitance value C makes up a string for a 22 kV, 50 Hz,single-phase overhead line insulation system. If the pin to earth capacitance is also C, then the string efficiency is
a)
50%
b)
75%
c)
90%
d)
86%
Correct answer is option 'B'. Can you explain this answer?
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Shital Devake
asked
• 6 hours ago
Galloping in transmission line conductors arises generally due to
a)
Asymmetrical layers of ice formation
b)
Vortex phenomenon in light winds
c)
Heavy weight of the line conductors
d)
Adoption of horizontal conductor configurations
Correct answer is option 'A'. Can you explain this answer?
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Answer
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Naresh Vemula
asked
• 6 hours ago
A CE-amplifier has R
L
= 10 kΩ. Given hie = 1 kΩ, h
fe
= 50, h
re
= 0 and 1/h
oe
= 40 kΩ. What is the voltage gain?
a)
-500
b)
-400
c)
-50
d)
-40
Correct answer is option 'A'. Can you explain this answer?
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Answer
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Radha Ganji
asked
• 7 hours ago
The given characteristic polynomial s
4
+ s
3
+ 2s
2
+ 2s + 3 =0 has
a)
zero root in RHS of s-plane
b)
one root in RHS of s-plane
c)
two roots in RHS of s-plane
d)
three roots in RHS of s-plane
Correct answer is option 'C'. Can you explain this answer?
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Vaishali More
asked
• 7 hours ago
Which of the following bus is used to transfer data from main memory to peripheral device?
a)
DMA bus
b)
Output bus
c)
Input bus
d)
Data bus
Correct answer is option 'A'. Can you explain this answer?
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Answer
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Sukh Singh
asked
• 7 hours ago
In arc welding, the voltage on ac supply system is in the range
a)
1000-1200 V
b)
400-500 V
c)
200-250 V
d)
70-1000 V
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Supraja Jillella
asked
• 8 hours ago
The number of discs in a string of insulators for 400 kV ac overhead transmission line lies in the range of
a)
32 to 33
b)
22 to 23
c)
15 to 16
d)
9 to 23
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Purva Lonkar
asked
• 8 hours ago
The differential protection of transformer does not cover the following fault:
a. Winding to ground fault
b. Winding to winding faults
c. Inter turn fault in any winding
d. short circuit faults at transfor
...
more
mer bushing?
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Answer
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Sunil Manjani
asked
• 8 hours ago
Equalising pulses in TV are sent during
a)
horizontal blanking
b)
vertical blanking
c)
serrations (slots)
d)
the horizontal retrace
Correct answer is option 'C'. Can you explain this answer?
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Answer
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Sunil Manjani
asked
• 8 hours ago
In electromagnetic waves, polarization
a)
is caused by reflection
b)
is due to the tranverse nature of the waves
c)
results from the longitudinal nature of the waves
d)
is always vertical in an isotropic medium
Correct answer is option 'B'. Can you explain this answer?
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Yogendra Choudhary
asked
• 8 hours ago
Which of the following results in a symmetrical fault ?
a)
Single-phase-to earth.
b)
Phase-to-phase.
c)
All the three phases-to earth.
d)
Two phases-to earth.
Correct answer is option 'C'. Can you explain this answer?
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Answer
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Sunil Manjani
asked
• 8 hours ago
As electromagnetic waves travel in free space, only one of the following can happen to them :
a)
absorption
b)
attenuation
c)
refraction
d)
reflection
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Aadrsh Kumar Kumar
asked
• 8 hours ago
The working of a synchronous motor is similar to
a)
gear train arrangement
b)
transmission of mechancial power by shaft
c)
distribution transformer
d)
turbine
Correct answer is option 'B'. Can you explain this answer?
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Answer
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B Shivani
asked
• 8 hours ago
The iron loss of a transformer at 400Hz is 10w.assuming that eddy current lossses vary as the square of flux density ,the iron losses of the transformer at rated voltage but at 50Hz would be?
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Rani Sandhu
asked
• 8 hours ago
Buses for load flow studies are classified as (i)the load bus, (ii) the generator bus and (iii) the
slack bus The correct combination of the pair of quantities specified having their usual meaning for different buses is
a)
A
b)
B
c)
C
d)
D
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Shubham Yadav
asked
• 8 hours ago
In a CRT the highest positive potential is given to
a)
focusing electrodes.
b)
cathode
c)
vertical deflection plates
d)
post deflection acceleration anode
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Vishnu A
asked
• 8 hours ago
Assertion (A):
R-2R ladder type DAC has higher speed of operation than weighted resistor DAC
Reason (R):
R-2R ladder type DAC uses only two different values of resistor network uses many different values of resistors
a)
Both A and R are correct and R is correct explanation of A
b)
Both A and R are correct but R is not correct explanation of A
c)
A is true, R is false
d)
A is false, R is true
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Swastik Sahoo
asked
• 9 hours ago
a)
a
b)
b
c)
c
d)
d
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Akshay Gautam
asked
• 9 hours ago
Needed a Document for ESE electrical?
Related:
GATE Notes & Videos for Electrical Engineering
?
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Answer
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Ajay Kumar
asked
• 9 hours ago
Impedance of (3 j4) if voltage (100 j50). Power in ckt?
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Mohsin Khan
asked
• 9 hours ago
At half power frequencies. the current in the RLC series circuit is:
a)
× current at resonance
b)
× current at resonance
c)
× current at resonance
d)
× current at resonance
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Prasanthi Starry
asked
• 9 hours ago
As access time is decreased, the cost of memory
a)
remains the same
b)
increases
c)
decreases
d)
may increase or decrease
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Somraj Meena
asked
• 9 hours ago
Find voltmeter reading of the circuit shown below
a)
5 V
b)
7.07 V
c)
8.66 V
d)
10 V
Correct answer is option 'C'. Can you explain this answer?
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Answer
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Meenu Maurya
asked
• 9 hours ago
The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60
o
, then the dead time (in minutes) is
a)
5π/12
b)
π/6
c)
π/12
d)
π/3
Correct answer is option 'A'. Can you explain this answer?
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Nitin Negi
asked
• 9 hours ago
A series R-L-C circuit will have unity power factor if operated at a frequency of
a)
1/LC
b)
c)
1/ w
2
LC
d)
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Suresh Pawan
asked
• 9 hours ago
Match List- I (Connection) with List-ll (Equivalent inductance) and select the correct answer using the codes given below the lists:
Codes:
a)
a
b)
b
c)
c
d)
d
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Megha Kale
asked
• 9 hours ago
Needed a Document for power elecronics?
Related:
Power Electronic Devices
?
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Answer
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PRINCE KUMAR
asked
• 10 hours ago
Which one of the following statement is correct ? The effects of phase lead compensator on gain crossover frequency (w
cg
) and the bandwidth (BW) are
a)
that both are decreased
b)
that w
cg
is decreased but BW is increased
c)
that w
cg
is increased but BW is decreased
d)
that both are increased
Correct answer is option 'D'. Can you explain this answer?
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Answer
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Pratiksha Gopal Gopal
asked
• 10 hours ago
Assertion (A):
Hall effect is used to find the type of semiconductor.
Reason (R):
When a specimen of semiconductor carrying current I lies in a magnetic field the force on electrons and holes is in opposite directions.
a)
Both A and R are true and R is correct explanation of A
b)
Both A and R are true but R is not a correct explanation of A
c)
A is true but R is false
d)
A is false but R is true
Correct answer is option 'A'. Can you explain this answer?
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Sanket Mestry Mestry
asked
• 10 hours ago
Assertion (A): A capacitor can store charge.
Reason (R): The plates of the condenser are conductive.
a)
Both A and R are true and R is the correct explanation of A.
b)
Both A and R are true but R is not the correct explanation of A.
c)
A is true but R is false.
d)
A is false but R is true:
Correct answer is option 'B'. Can you explain this answer?
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Sai Kiran
asked
• 10 hours ago
A particular current is made up of two components a 10A dc and a sinusoidal current of peak value of 14.14A. The average value of resultant current is
a)
zero
b)
24.14A
c)
10A
d)
14.14A
Correct answer is option 'C'. Can you explain this answer?
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Mahesh547 Sandanaveni
asked
• 10 hours ago
Which instrument has the same calibration for ac & dc values ?
a)
Induction type
b)
Hot wire type
c)
Moving coil type
d)
Moving iron type
Correct answer is option 'B'. Can you explain this answer?
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Answer
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Manoj Pawar
asked
• 10 hours ago
In the optimum generator scheduling different power plants, the minimum fuel cost is obtained when
a)
only the incremental fuel cost of each plant is the same
b)
the penalty factor of each plant is the same
c)
the ratio of the incremental fuel cost to the penalty factor of each plant is the same.
d)
the incremental fuel cost of each plant multiplied by its penalty factor is the same
Correct answer is option 'D'. Can you explain this answer?
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Sai Kiran
asked
• 11 hours ago
The maximum short circuit current occurs in case of
a)
a three phase bolted fault
b)
a double line to ground fault
c)
a line to line fault
d)
a single line to ground fault
Correct answer is option 'A'. Can you explain this answer?
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Answer
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Deepthi Appini
asked
• 12 hours ago
A person with a receiver is 5 km away from the transmitter. What is the distance that this person must move further to detect at 3 dB decrease in signal strength?
a)
942 m
b)
2070 m
c)
4978 m
d)
5320 m
Correct answer is option 'B'. Can you explain this answer?
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Lucy
asked
• 12 hours ago
For the amplifier in figure, β = 800. The mid-band voltage gain V
0
/V
i
is
a)
0
b)
< 1
c)
≈ 1
d)
800
Correct answer is option 'C'. Can you explain this answer?
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Pranshul Gupta
asked
• 13 hours ago
The transition region in an open circuited p-n junction contains
a)
free electrons only
b)
holes only
c)
both free electrons and holes
d)
uncovered immobile impurity ions
Correct answer is option 'D'. Can you explain this answer?
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ANITA KUMARI
asked
• 13 hours ago
Holes are filled on the opposite side of the disc of an induction type energy meter to
a)
avoid creep on no load
b)
balance the disc
c)
dissipate heat energy due to eddy currants
d)
increase the deflecting torque
Correct answer is option 'A'. Can you explain this answer?
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Pankaj Bhalse
asked
• 13 hours ago
The thyristor can be turned off by reverse biasing the SCR. Thyristors current can be reduced to a value below the value of holding current. Since, the thyristor is turned off forcibly it is termed as a forced commutation pro
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cess.?
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Srinivas Y
asked
• 14 hours ago
Parallel plate capacitance made with two square plates of 400mm side. the 14 mm space between the plates is filled with two layers of dielectrics of Er=4,6mm thick and Er=2,8mm thick . neglecting fringing of fields at the edg
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e the capacitence is?
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Amit Parashar
asked
• 14 hours ago
A 50 Hz, 11 kV, 3 phase alternator with earthed neutral having a reactance of 3 ohms per phase and is connected to a bus bar through a circuit breaker, if the distributed capacitance upto CB between the phase and neutral is 0.01 μ F.
What is the peak re striking voltage?
a)
18.36 kV
b)
17.96 kV
c)
15.96 kV
d)
12.65 kV
Correct answer is option 'B'. Can you explain this answer?
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Lalithakala Thopudurthy
asked
• 14 hours ago
Match List - I (Types of friction) with List - II (Corresponding frictional force vs Velocity curve) and select the correct answer using the codes given below the lists:
a)
a
b)
b
c)
c
d)
d
Correct answer is option 'A'. Can you explain this answer?
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Reke Kavya
asked
• 14 hours ago
The resistance of 400meters of a wire is 90ohms what is length of the same wire if it has a resistance of 150ohms?
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Supraja Jillella
asked
• 15 hours ago
Error due to hysteresis is predominant in
a)
moving coil instrument
b)
moving iron instrument
c)
hot wire instrument
d)
electrodynamometer instruments
Correct answer is option 'B'. Can you explain this answer?
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KUMARI RENU
asked
• 15 hours ago
With regard to the filtering property, the lead compensator and the lag compensator are, respectively.
a)
low pass and high pass filters
b)
high pass and low pass filters
c)
both high pass filters
d)
both low pass filters
Correct answer is option 'B'. Can you explain this answer?
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SARITA NRAIN
asked
• 15 hours ago
Which one of the following is not a property of root loci ?
a)
The root locus is symmetrical about jw axis
b)
They start from the open loop poles and terminate at the open loop zeros.
c)
The breakaway points are determined from dK/ds = 0
d)
Segments of the real axis are part of the root locus, if and only if, the total number of real poles and zeros to their right is odd
Correct answer is option 'A'. Can you explain this answer?
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Indresh Yadav
asked
• 15 hours ago
In the circuit shown below the op-amps are ideal. Then V
out
in Volts is
a)
4
b)
6
c)
8
d)
10
Correct answer is option 'C'. Can you explain this answer?
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Roshan Jangid
asked
• 16 hours ago
Which one of the following identity is correct one ?
a)
b)
c)
d)
Correct answer is option 'B'. Can you explain this answer?
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Rajeshraj Ball
asked
• 16 hours ago
Under no load conditions, which of the following loss is negligible ?
a)
Hysteresis loss
b)
Eddy current loss
c)
Copper loss
d)
All losses have same magnitude
Correct answer is option 'C'. Can you explain this answer?
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Bharath Goud
asked
• 16 hours ago
In germanium at room temperature, the forbidden energy gap E
G
is about
a)
0.72 eV
b)
1.1 eV
c)
0.785 eV
d)
1.21 eV
Correct answer is option 'A'. Can you explain this answer?
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Pravin Kumar
asked
• 16 hours ago
The purpose of providing an iron core in a transformer is to
a)
provide support to windings
b)
reduce hysteresis loss
c)
decrease the reluctance of the magnetic path
d)
reduce eddy current losses
Correct answer is option 'C'. Can you explain this answer?
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NIDHI TOMAR
asked
• 16 hours ago
Which of the following statements is not true of a phasor?
a)
It may be a scalar or a vector
b)
It is a time dependent quantity
c)
It is a complex quantity
d)
All are true
Correct answer is option 'B'. Can you explain this answer?
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Prashant Saini
asked
• 16 hours ago
The load carried by Y-Y connection is: A. 47.7% of the original load B.57.75% of the original load C.67.7% of original load D.87.7% of original load?
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Yesh Sharma
asked
• 16 hours ago
The impedance value of generator is 0.2 pu on a base value of 11 kV, 50 MVA. The impedance value for a base value of 22 KV, 150 MVA is
a)
0.15
b)
0.2 pu
c)
0.3 pu
d)
2.4 pu
Correct answer is option 'A'. Can you explain this answer?
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Sanjay Prajapati
asked
• 16 hours ago
The value of flux involved m the e.m.f. equation of a transformer is
a)
average value
b)
r.m.s. value
c)
maximum value
d)
instantaneous value
Correct answer is option 'C'. Can you explain this answer?
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Sai Kiran
asked
• 17 hours ago
A supply voltage of 230V, 50 Hz is fed to a residential welding. Write down its equation for instantaneous value
a)
163 sin 314.16t
b)
230 sin 315.16t
c)
325 sin 314.16t
d)
361 sin 314.16t
Correct answer is option 'C'. Can you explain this answer?
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Sayan Chakraborty
asked
• 17 hours ago
Three single-phase 50kVA, 2300/230V, 50Hz transformers are connected to form a three- phase star-delta transformer. The equivalent impedance of each transformer referred to HV side is (1.2 j1.6). The three-phase transformer
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thus formed supplies a three-phase load of 120kVA at 230V with 0.85 power factor (lag). Determine the voltage regulation of the transformer.?
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Ankita Dixit
asked
• 17 hours ago
In the circuit as shownb = 99, V
BE
= 0.6 V, then what are the values of V
C
and I
C
corresponding to the operating point ?
a)
4.6 V and 1.98 mA
b)
4.7 V and 2.00 mA
c)
5.4 V and 1.56 mA
d)
4.2 V and 2.1 mA
Correct answer is option 'A'. Can you explain this answer?
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Jiban Paul
asked
• 17 hours ago
Compared to Gauss-seidel method, Newton- Raphson method takes
a)
Less number of iterations and more time per iteration
b)
Less numbers of iterations and less time per iteration
c)
More number of iterations and more time per iteration
d)
More number of iterations and less time per iteration
Correct answer is option 'A'. Can you explain this answer?
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Kishan Pathak
asked
• 17 hours ago
Least expensive instrument for dc measurement is
a)
Hot wire instrument
b)
Dynamometer type moving coil instrument
c)
Attraction type moving iron instrument
d)
Electrostatic type instrument
Correct answer is option 'C'. Can you explain this answer?
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Uttam Mohanty
asked
• 17 hours ago
Assertion (A):
If points at infinity are included, G(
s
) has same number of poles and zeros.
Reason (R):
The function
has a zero at
s
= - 2.
a)
Both A and R are correct and R is correct explanation of A
b)
Both A and R are correct but R is not correct explanation of A
c)
A is correct but R is wrong
d)
R is correct but A is wrong
Correct answer is option 'B'. Can you explain this answer?
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Shravana Patil Patil
asked
• 17 hours ago
Find dz/dt for z=tan1 (1/x)?
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