Electrical Engineering (EE)
Potu Madhavi asked • 8 minutes agoThe operating characteristic of a distance relay in the R-X plane is shown in the figure. It represents operating characteristic of a
- a)reactance relay
- b)directional impedance relay
- c)impedance relay
- d)mho relay
Correct answer is option 'D'. Can you explain this answer?
The operating characteristic of a distance relay in the R-X plane is shown in the figure. It represents operating characteristic of a
a)
reactance relay
b)
directional impedance relay
c)
impedance relay
d)
mho relay
Monika Savaliya asked • 10 minutes agoThe transfer function C (s ) of a compensator is given below.
The frequency range in which the phase (lead) introduced by the compensator reaches the maximum is- a)0.1 < ω < 1
- b)1 < ω < 10
- c)10 < ω < 100
- d)ω > 100
Correct answer is option 'A'. Can you explain this answer?
The transfer function C (s ) of a compensator is given below.
The frequency range in which the phase (lead) introduced by the compensator reaches the maximum is
a)
0.1 < ω < 1
b)
1 < ω < 10
c)
10 < ω < 100
d)
ω > 100
Potu Madhavi asked • 13 minutes agoA single – Phase, 200 V alternator has armature resistance and reactance of 0.8W and 4.94W respectively. The voltage regulation of the alternator at 100 A load at 0.8 leading power factor is- a)7%
- b)– 8.9 %
- c)14%
- d)0%
Correct answer is option 'B'. Can you explain this answer?
A single – Phase, 200 V alternator has armature resistance and reactance of 0.8W and 4.94W respectively. The voltage regulation of the alternator at 100 A load at 0.8 leading power factor is
a)
7%
b)
– 8.9 %
c)
14%
d)
0%
Saurabh Mahadik asked • 24 minutes agoThe temperature of tempering oil baths maintained at 400oC during heat treatment of steel is measured by a/an __________ thermocouple.- a)chromel-alumel
- b)iron-constantan
- c)platinum-platinum/rhodium
- d)none of these.
Correct answer is option 'B'. Can you explain this answer?
The temperature of tempering oil baths maintained at 400oC during heat treatment of steel is measured by a/an __________ thermocouple.
a)
chromel-alumel
b)
iron-constantan
c)
platinum-platinum/rhodium
d)
none of these.
Mohsin Khan asked • 27 minutes agoWhile using air-blast circuit beaker, current chopping is a phenomenon often observed when- a)A long overhead line is switched off
- b)A bank of capacitors is switched off
- c)A transformer on no-load is switched off
- d)A heavy load is switched off
Correct answer is option 'C'. Can you explain this answer?
While using air-blast circuit beaker, current chopping is a phenomenon often observed when
a)
A long overhead line is switched off
b)
A bank of capacitors is switched off
c)
A transformer on no-load is switched off
d)
A heavy load is switched off
JYOTI CHARAN asked • 30 minutes agoMatch List-I (Physical quantities) with List-ll (Dimensions) and select the correct answer using the codes given below the lists:
List-I
A. Electric potential
B. Magnetic flux
C. Magnetic field intensity
D. Magnetic flux density
List-ll
1. MT-2I-1
2. ML2T-3I-1
3. IL-1
4. ML2T-2I-1- a)2, 4, 3, 1
- b)4, 2, 3, 1
- c)1, 2, 1, 3
- d)4, 2, 1, 3
Correct answer is option 'C'. Can you explain this answer?
Match List-I (Physical quantities) with List-ll (Dimensions) and select the correct answer using the codes given below the lists:
List-I
A. Electric potential
B. Magnetic flux
C. Magnetic field intensity
D. Magnetic flux density
List-ll
1. MT-2I-1
2. ML2T-3I-1
3. IL-1
4. ML2T-2I-1
List-I
A. Electric potential
B. Magnetic flux
C. Magnetic field intensity
D. Magnetic flux density
List-ll
1. MT-2I-1
2. ML2T-3I-1
3. IL-1
4. ML2T-2I-1
a)
2, 4, 3, 1
b)
4, 2, 3, 1
c)
1, 2, 1, 3
d)
4, 2, 1, 3
Pratiksha Gopal Gopal asked • 55 minutes agoAssertion (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?
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
Sai Satish asked • 1 hour ago Speed power product is measured as the product of- a)gate switching delay and gate power dissipation
- b)gate switching delay and gate power absorption
- c)gate switching delay and net gate power
- d)gate power dissipation and absorption
Correct answer is option 'A'. Can you explain this answer?
Speed power product is measured as the product of
a)
gate switching delay and gate power dissipation
b)
gate switching delay and gate power absorption
c)
gate switching delay and net gate power
d)
gate power dissipation and absorption
Dhake Pavan asked • 1 hour agoIn a shaded-pole induction motor, the rotor runs from the- a)shaded portion to the unshaded portion of the pole while the flux in the former leads that in the latter
- b)shaded portion to the unshaded portion of the pole while the flux in the former lags that in the latter
- c)unshaded portion to the shaded portion while the flux in the former leads that in the latter
- d)unshaded portion to the shaded portion while the flux in the former lags that in the latter
Correct answer is option 'C'. Can you explain this answer?
In a shaded-pole induction motor, the rotor runs from the
a)
shaded portion to the unshaded portion of the pole while the flux in the former leads that in the latter
b)
shaded portion to the unshaded portion of the pole while the flux in the former lags that in the latter
c)
unshaded portion to the shaded portion while the flux in the former leads that in the latter
d)
unshaded portion to the shaded portion while the flux in the former lags that in the latter
Manjusha Patil asked • 1 hour agoAssertion (A): Hamming code is commonly used for error correction Reason (R): In Hamming code the number of parity bits increases as the number of information bits increases.- 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?
Assertion (A): Hamming code is commonly used for error correction
Reason (R): In Hamming code the number of parity bits increases as the number of information bits increases.
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
Bindu Reddy asked • 2 hours agoThe photo electric current in amperes per watt of incident light depend on- a)frequency of incident light
- b)intensity of incident light
- c)frequency & intensity of incident light
- d)frequency wavelength and intensity of incident light
Correct answer is option 'A'. Can you explain this answer?
The photo electric current in amperes per watt of incident light depend on
a)
frequency of incident light
b)
intensity of incident light
c)
frequency & intensity of incident light
d)
frequency wavelength and intensity of incident light
Kishan Pathak asked • 2 hours agoAs compared to full wave rectifier using two diodes, the four diode bridge rectifier has the dominant advantage of- a)higher current carrying capacity
- b)lower peak inverse voltage requirement
- c)lower ripple factor
- d)higher efficiency
Correct answer is option 'B'. Can you explain this answer?
As compared to full wave rectifier using two diodes, the four diode bridge rectifier has the dominant advantage of
a)
higher current carrying capacity
b)
lower peak inverse voltage requirement
c)
lower ripple factor
d)
higher efficiency
Satyajit Padhi asked • 2 hours agoConsider the following statements:
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?- a)1, 2 and 3
- b)1 and 2
- c)2 and 3
- d)1 and 3
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements:
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?
a)
1, 2 and 3
b)
1 and 2
c)
2 and 3
d)
1 and 3
Hemalatha S asked • 2 hours agoThe use of electronic instruments is becoming more extensive because they have- a)the capability to respond to signals from remote places
- b)afast response and compatibility with digital computers
- c)both (a) and (b)
- d)a high sensitivity but less reliability
Correct answer is option 'C'. Can you explain this answer?
The use of electronic instruments is becoming more extensive because they have
a)
the capability to respond to signals from remote places
b)
afast response and compatibility with digital computers
c)
both (a) and (b)
d)
a high sensitivity but less reliability
Sunil Manjani asked • 2 hours agoA directional coupler with three or more holes is sometimes used in preference to the two-hole coupler- a)because it is more efficient
- b)to increase coupling of the signal
- c)to reduce spurious mode generation
- d)to increase the bandwidth of the system
Correct answer is option 'D'. Can you explain this answer?
A directional coupler with three or more holes is sometimes used in preference to the two-hole coupler
a)
because it is more efficient
b)
to increase coupling of the signal
c)
to reduce spurious mode generation
d)
to increase the bandwidth of the system
Vikash Parashar asked • 2 hours agoA microprocessor with a 16-bit address bus is used in a linear memory selection configuration (i.e., Address bus lines are directly used as chip selects of memory chips) with 4 memory chips. The maximum addressable memory space is- a)64 K
- b)16 K
- c)8 K
- d)4 K
Correct answer is option 'A'. Can you explain this answer?
A microprocessor with a 16-bit address bus is used in a linear memory selection configuration (i.e., Address bus lines are directly used as chip selects of memory chips) with 4 memory chips. The maximum addressable memory space is
a)
64 K
b)
16 K
c)
8 K
d)
4 K
Harsha Sonarthi Sonarthi asked • 3 hours agoWhen the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop- a)inductor motor torque
- b)induction generator torque
- c)synchronous motor torque
- d)d.c. motor toque
Correct answer is option 'B'. Can you explain this answer?
When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop
a)
inductor motor torque
b)
induction generator torque
c)
synchronous motor torque
d)
d.c. motor toque
SARITA NRAIN asked • 3 hours agoWhich 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?
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
Kalyan Sreenivas asked • 3 hours agoTwo 490 kW transformers each has a maximum efficiency of 98%, but in one the max efficiency occurs at full load while in other, it occurs at half load. Each transformer is on full load for 4 hours, on half load for 6 hours and on one tenth load for 14 hours per dayQ. The total loss of transformer 1 in a day is _____- a)20 kW
- b)120kW
- c)116 kW
- d)148 kW
Correct answer is option 'D'. Can you explain this answer?
Two 490 kW transformers each has a maximum efficiency of 98%, but in one the max efficiency occurs at full load while in other, it occurs at half load. Each transformer is on full load for 4 hours, on half load for 6 hours and on one tenth load for 14 hours per day
Q.
The total loss of transformer 1 in a day is _____
a)
20 kW
b)
120kW
c)
116 kW
d)
148 kW
Supraja Jillella asked • 4 hours agoThe current and potential coil of a wattmeter were accidentally interchanged while connecting.After energizing the circuit, it was observed that the wattmeter did not show the reading. This could be due to- a)damage to potential coil
- b)damage to current coil
- c)damage to both potential and current coil
- d)loose contact
Correct answer is option 'A'. Can you explain this answer?
The current and potential coil of a wattmeter were accidentally interchanged while connecting.After energizing the circuit, it was observed that the wattmeter did not show the reading. This could be due to
a)
damage to potential coil
b)
damage to current coil
c)
damage to both potential and current coil
d)
loose contact
Raju Parihar asked • 4 hours agoA 100 km long transmission line is loaded at 110 kV. If the loss of line is 15 MW and theload is 150 MVA, the resistance of the line is- a)8.06 ohms per phase
- b)0.806 ohm per phase
- c)0.0806 ohm per phase
- d)80.6 ohms per phase
Correct answer is option 'A'. Can you explain this answer?
A 100 km long transmission line is loaded at 110 kV. If the loss of line is 15 MW and theload is 150 MVA, the resistance of the line is
a)
8.06 ohms per phase
b)
0.806 ohm per phase
c)
0.0806 ohm per phase
d)
80.6 ohms per phase
Mohsin Khan asked • 4 hours agoTo prevent maloperation of differentially relay while energizing a transformer, the relay restraining coil is biased with- a)Second harmonic current
- b)Third harmonic current
- c)Fifth harmonic current
- d)Seventh harmonic current
Correct answer is option 'A'. Can you explain this answer?
To prevent maloperation of differentially relay while energizing a transformer, the relay restraining coil is biased with
a)
Second harmonic current
b)
Third harmonic current
c)
Fifth harmonic current
d)
Seventh harmonic current
Guruvilli Govinda Rao asked • 5 hours agoThree memory chips are of size 1 KB, 2 KB and 4 KB. Their address bus is 10 bits, What are the data bus sizes of the chips ?- a)8 bits, 16 bits and 24 bits respectively.
- b)8 bits, 16 bits and 32 bits respectively.
- c)8 bits, 16 bits and 64 bits respectively.
- d)8 bits, 16 bits and 128n bits respectively
Correct answer is option 'B'. Can you explain this answer?
Three memory chips are of size 1 KB, 2 KB and 4 KB. Their address bus is 10 bits, What are the data bus sizes of the chips ?
a)
8 bits, 16 bits and 24 bits respectively.
b)
8 bits, 16 bits and 32 bits respectively.
c)
8 bits, 16 bits and 64 bits respectively.
d)
8 bits, 16 bits and 128n bits respectively
due to unit ramp input ?
Møîñ Ahmed asked • 6 hours agoMatch List-I with List-ll and select the correct answer: List-IA. PrecisionB. AccuracyC. ResolutionD. StaticList-ll1. The smallest change in the input quantity which can be detected with its certainty2. Closeness of the reading with its true value3. Measure of reproductibility of the measurements4. Ratio of infinitesimal change sensitivity in output to infinitesimal change in inputCodes:A B C D - a)2 3 1 4
- b)3 2 4 1
- c)3 2 1 4
- d)2 3 4 1
Correct answer is option 'C'. Can you explain this answer?
Match List-I with List-ll and select the correct answer:
List-I
A. Precision
B. Accuracy
C. Resolution
D. Static
List-ll
1. The smallest change in the input quantity which can be detected with its certainty
2. Closeness of the reading with its true value
3. Measure of reproductibility of the measurements
4. Ratio of infinitesimal change sensitivity in output to infinitesimal change in input
Codes:
A B C D
a)
2 3 1 4
b)
3 2 4 1
c)
3 2 1 4
d)
2 3 4 1
Dev Never Give Up asked • 6 hours agoTwo -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?
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%
Pinkesh Patel asked • 6 hours agoThe Voltage Source Inverter (VSI) shown in the figure below is switched to provide a 50Hz, square wave ac output voltage vo across an RL load. Reference polarity of vo and reference direction of the output current io are indicated in the figure. It is given that R = 3 ohms, L = 9.55mH.
Appropriate transition i.e., Zero Voltage Switching (ZVS) / Zero Current Switching (ZCS) of the IGBTs during turn-on / turn-off is- a)ZVS during turn off
- b)ZVS during turn-on
- c)ZCS during turn off
- d)ZCS during turn-on
Correct answer is option 'D'. Can you explain this answer?
The Voltage Source Inverter (VSI) shown in the figure below is switched to provide a 50Hz, square wave ac output voltage vo across an RL load. Reference polarity of vo and reference direction of the output current io are indicated in the figure. It is given that R = 3 ohms, L = 9.55mH.
Appropriate transition i.e., Zero Voltage Switching (ZVS) / Zero Current Switching (ZCS) of the IGBTs during turn-on / turn-off is
a)
ZVS during turn off
b)
ZVS during turn-on
c)
ZCS during turn off
d)
ZCS during turn-on
Priyanka Gupta asked • 6 hours agoThe value of three resistances when connected in star connection is?
Sanskruti Mahajan asked • 7 hours agoWhat happens when the centrifugal switch in the starting winding of a single - phase induction motor fails to open ?- a)The motor stops quickly
- b)The starting winding will overheat
- c)The motor runs at reduced speed
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
What happens when the centrifugal switch in the starting winding of a single - phase induction motor fails to open ?
a)
The motor stops quickly
b)
The starting winding will overheat
c)
The motor runs at reduced speed
d)
None of the above
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