Electrical Engineering (EE)
Amit Parashar asked • 1 hour agoA 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?
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
Shailesh Patel asked • 2 hours agoIn a p type material the Fermi level is 0.3 eV above valence band. The concentration of acceptor atoms is increased. The new position of Fermi level is likely to be- a)0.5 eV above valence band
- b)0.28 eV above valence band
- c)0.1 eV above valence band
- d)below the valence band
Correct answer is option 'B'. Can you explain this answer?
In a p type material the Fermi level is 0.3 eV above valence band. The concentration of acceptor atoms is increased. The new position of Fermi level is likely to be
a)
0.5 eV above valence band
b)
0.28 eV above valence band
c)
0.1 eV above valence band
d)
below the valence band
Jitu Sharma asked • 6 hours agoConsider the following statements in respect of a CC amplifier.
1. It performs a resistance transformation from low to high resistance.
2. Its current gain is close to unity
3. Its voltage gain is close to unity
4. Its frequency range is higher than that of a CE-stage.
Which of the statements is given above are correct?- a)1, 2 and 4
- b)1 and 3
- c)Only 2 and 4
- d)3 and 4
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements in respect of a CC amplifier.
1. It performs a resistance transformation from low to high resistance.
2. Its current gain is close to unity
3. Its voltage gain is close to unity
4. Its frequency range is higher than that of a CE-stage.
Which of the statements is given above are correct?
1. It performs a resistance transformation from low to high resistance.
2. Its current gain is close to unity
3. Its voltage gain is close to unity
4. Its frequency range is higher than that of a CE-stage.
Which of the statements is given above are correct?
a)
1, 2 and 4
b)
1 and 3
c)
Only 2 and 4
d)
3 and 4
PAWAN KUMAR asked • 7 hours agoConsider the following statements:
1. Divergence of a vector function 
at each point gives the rate per unit volume at which the physical entity is issuing from that point.
2. If a vector function ϕ represents temperature, then grad ϕ or ∇ϕ will represents rate of change of temperature with distance.
3. The curl of a vector function A gives the measure of the angular velocity at every point of the vector field.- a)2 and 3 only
- b)1, 2 and 3
- c)1 and 3 only
- d)2 only
Correct answer is option 'B'. Can you explain this answer?
Consider the following statements:
1. Divergence of a vector function at each point gives the rate per unit volume at which the physical entity is issuing from that point.
2. If a vector function ϕ represents temperature, then grad ϕ or ∇ϕ will represents rate of change of temperature with distance.
3. The curl of a vector function A gives the measure of the angular velocity at every point of the vector field.
1. Divergence of a vector function
at each point gives the rate per unit volume at which the physical entity is issuing from that point.2. If a vector function ϕ represents temperature, then grad ϕ or ∇ϕ will represents rate of change of temperature with distance.
3. The curl of a vector function A gives the measure of the angular velocity at every point of the vector field.
a)
2 and 3 only
b)
1, 2 and 3
c)
1 and 3 only
d)
2 only
Anjali Sb asked • 7 hours agoAcceptor impurity atom in germanium results in- a)Increased forbidden energy gap
- b)Reduced forbidden energy gap
- c)New narrow energy band slightly above the valence level
- d)New discrete energy level slightly above the valence level
Correct answer is option 'D'. Can you explain this answer?
Acceptor impurity atom in germanium results in
a)
Increased forbidden energy gap
b)
Reduced forbidden energy gap
c)
New narrow energy band slightly above the valence level
d)
New discrete energy level slightly above the valence level
Anil Swami asked • 13 hours agoConsider the following statements: In root-locus plot, the breakaway points
1. Ned not always be on real axis alone
2. Must lie on the root loci
4. Must lie between 0 and – 1
Which of these statements are correct ?- a)1, 2 and 3
- b)1 and 3
- c)2 and 3
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Consider the following statements: In root-locus plot, the breakaway points
1. Ned not always be on real axis alone
2. Must lie on the root loci
4. Must lie between 0 and – 1
Which of these statements are correct ?
1. Ned not always be on real axis alone
2. Must lie on the root loci
4. Must lie between 0 and – 1
Which of these statements are correct ?
a)
1, 2 and 3
b)
1 and 3
c)
2 and 3
d)
None of the above
Anurag Kumar asked • 13 hours agoA point is 10 mm above HP and 20 mm behind VP. Its top view will be?
SAURABH KUMAR asked • 13 hours agoFor the given system, how can be steady state error produced by step disturbance be reduced ?
- a)By increasing dc gain of G1 (s) G2(s)
- b)By increasing dc gain of G2 (s)
- c)By increasing dc gain of G1 (s)
- d)By removing the feedback
Correct answer is option 'C'. Can you explain this answer?
For the given system, how can be steady state error produced by step disturbance be reduced ?
a)
By increasing dc gain of G1 (s) G2(s)
b)
By increasing dc gain of G2 (s)
c)
By increasing dc gain of G1 (s)
d)
By removing the feedback
Nitin Negi asked • 14 hours agoIn a capacitor start single-phase motor, when capacitor is replaced by a resistance- a)torque will increase
- b)the motor will consume less power
- c)motor will run in reverse direction
- d)motor will continue to run in same direction
Correct answer is option 'D'. Can you explain this answer?
In a capacitor start single-phase motor, when capacitor is replaced by a resistance
a)
torque will increase
b)
the motor will consume less power
c)
motor will run in reverse direction
d)
motor will continue to run in same direction
Promugdha Bhattacharya asked • 14 hours agoFor which of the following, Thevenin’s and Norton’s equivalents can’t be developed?- a)DC independent sources
- b)AC independent sources
- c)Independent and dependent sources
- d)Independent and dependent sources with all controlling current and voltage contained within the network whose equivalent is being developed.
Correct answer is option 'C'. Can you explain this answer?
For which of the following, Thevenin’s and Norton’s equivalents can’t be developed?
a)
DC independent sources
b)
AC independent sources
c)
Independent and dependent sources
d)
Independent and dependent sources with all controlling current and voltage contained within the network whose equivalent is being developed.
has the dimension of
Manoj Pawar asked • 16 hours agoIn 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?
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
Jeya Kumar asked • 17 hours agoA 2-terminal network consist of one of the RLC elements. The element is connected to an ac supply. The current through the element is IA when an inductor is inserted in series between the source and element 2IA the current through the element becomes. What is this element ?- a)A resistor
- b)An inductor
- c)A capacitor
- d)Cannot be a single element
Correct answer is option 'C'. Can you explain this answer?
A 2-terminal network consist of one of the RLC elements. The element is connected to an ac supply. The current through the element is IA when an inductor is inserted in series between the source and element 2IA the current through the element becomes. What is this element ?
a)
A resistor
b)
An inductor
c)
A capacitor
d)
Cannot be a single element
Rupak Mandal asked • 18 hours agoIn a synchronous motor, the breakdown torque is- a)directly proportional to applied voltage
- b)directly proportional to the square of the applied voltage
- c)inversely proportional to applied voltage
- d)none of the above
Correct answer is option 'A'. Can you explain this answer?
In a synchronous motor, the breakdown torque is
a)
directly proportional to applied voltage
b)
directly proportional to the square of the applied voltage
c)
inversely proportional to applied voltage
d)
none of the above
Gurpreet Singh asked • 19 hours agoConsider the following statements:In 8085 microprocessor, data - bus and addressbus are multiplexed in order to1. Increase the speed of microprocessor2. Reduce the number of pins.3. Connect more peripheral chips.Which of the above statement is/are correct?- a)1 only
- b)2 only
- c)2 and 3
- d)1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Consider the following statements:
In 8085 microprocessor, data - bus and addressbus are multiplexed in order to
1. Increase the speed of microprocessor
2. Reduce the number of pins.
3. Connect more peripheral chips.
Which of the above statement is/are correct?
a)
1 only
b)
2 only
c)
2 and 3
d)
1, 2 and 3
Vivek Gautam asked • 20 hours agoA series resonant circuit has an inductive reactance of 1000W, a capacitive reactance of 1000W and a resistance of 0. 1W. If the resonant frequency is 10 MHz, then the bandwidth of the circuit will be- a)1 kHz
- b)10 kHz
- c)1 MHz
- d)0.1 kHz
Correct answer is option 'A'. Can you explain this answer?
A series resonant circuit has an inductive reactance of 1000W, a capacitive reactance of 1000W and a resistance of 0. 1W. If the resonant frequency is 10 MHz, then the bandwidth of the circuit will be
a)
1 kHz
b)
10 kHz
c)
1 MHz
d)
0.1 kHz
Sunil Manjani asked • 21 hours agoA signal propagated in a waveguide has a full wave of electric intensity change between the two further walls, and no component of the electric field in the direction of propagation. The mode is- a)TE1.1
- b)TE1.0
- c)TM2.2
- d)TE2.0
Correct answer is option 'D'. Can you explain this answer?
A signal propagated in a waveguide has a full wave of electric intensity change between the two further walls, and no component of the electric field in the direction of propagation. The mode is
a)
TE1.1
b)
TE1.0
c)
TM2.2
d)
TE2.0
Potu Madhavi asked • 21 hours agoA 3-Phase star-connected symmetrical load consumes P watts of power from a balance supply. If the same load is connected in delta to the same supply , the power consumption will be- a)P
- b)
- c)3 P
- d)not determinable from the given data
Correct answer is option 'C'. Can you explain this answer?
A 3-Phase star-connected symmetrical load consumes P watts of power from a balance supply. If the same load is connected in delta to the same supply , the power consumption will be
a)
P
b)
c)
3 P
d)
not determinable from the given data
Manoj Sharma asked • 21 hours agoIn a thyrite lightning arrester the resistance- a)varies linearly with applied voltage
- b)increases with the applied voltage
- c)Decreases linearly with the applied voltage
- d)is high at low current and low at high current
Correct answer is option 'D'. Can you explain this answer?
In a thyrite lightning arrester the resistance
a)
varies linearly with applied voltage
b)
increases with the applied voltage
c)
Decreases linearly with the applied voltage
d)
is high at low current and low at high current
Potu Madhavi asked • 22 hours agoFor the same voltage drop, increasing the voltage of a distributor n-times.- a)reduces the x-section of the conductor by n times
- b)increases the x-section of the conductor by n times
- c)reduces the x-section of the conductor by n2 times
- d)increases the x-section of the conductor by n2 times.
Correct answer is option 'A'. Can you explain this answer?
For the same voltage drop, increasing the voltage of a distributor n-times.
a)
reduces the x-section of the conductor by n times
b)
increases the x-section of the conductor by n times
c)
reduces the x-section of the conductor by n2 times
d)
increases the x-section of the conductor by n2 times.
Sunil Manjani asked • 22 hours agoCassegrain feed is used with a parabolic reflector to- a)increase the gain of the system
- b)increase the beamwidth of the system
- c)reduce the size of the main reflector
- d)allow the feed to be placed at a convenient point
Correct answer is option 'D'. Can you explain this answer?
Cassegrain feed is used with a parabolic reflector to
a)
increase the gain of the system
b)
increase the beamwidth of the system
c)
reduce the size of the main reflector
d)
allow the feed to be placed at a convenient point
Hemalatha S asked • 22 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
DIVYA CHAUHAN asked • 22 hours agoA 50 KVA, 11000/400 V Δ-Y distribution transformer has a resistance of 1% and reactance of 7% per unit. What is the transformer phase impedance referred to the high-voltage side?- a)78.6 + j 608.2
- b)72.6 + j 508.2
- c)62.6 + j 908.2
- d)65.6 + j 786.2
Correct answer is option 'B'. Can you explain this answer?
A 50 KVA, 11000/400 V Δ-Y distribution transformer has a resistance of 1% and reactance of 7% per unit. What is the transformer phase impedance referred to the high-voltage side?
a)
78.6 + j 608.2
b)
72.6 + j 508.2
c)
62.6 + j 908.2
d)
65.6 + j 786.2
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