All India Electrical Engineering (EE) Group
What is the fundamental frequency of exp(2pi*w*j)?- a)1pi*w
- b)2pi*w
- c)w
- d)2w
Correct answer is option 'C'. Can you explain this answer?
What is the fundamental frequency of exp(2pi*w*j)?
a)
1pi*w
b)
2pi*w
c)
w
d)
2w
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Shajahan Aboobacker answered • 2 days ago |
Correct option is not C.
first t is missing
if t is there fundamental frequency would be 2pi*w
first t is missing
if t is there fundamental frequency would be 2pi*w
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Mohamed Ashiq
asked a question
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Increased pulse-width in the flat-top sampling, leads to- a)attenuation of high frequencies in reproduction
- b)attenuation of low frequencies in reproduction
- c)greater aliasing errors in reproduction
- d)no harmful effects in reproduction
Correct answer is option 'C'. Can you explain this answer?
Increased pulse-width in the flat-top sampling, leads to
a)
attenuation of high frequencies in reproduction
b)
attenuation of low frequencies in reproduction
c)
greater aliasing errors in reproduction
d)
no harmful effects in reproduction
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Pravin Kumar
asked a question
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A good voltage regulation of a transformer means- a)output voltage fluctuation from no load to full load is least
- b)output voltage fluctuation with power factor is least
- c)difference between primary and secondary voltage is least
- d)difference between primary and secondary voltage is maximum
Correct answer is option 'A'. Can you explain this answer?
A good voltage regulation of a transformer means
a)
output voltage fluctuation from no load to full load is least
b)
output voltage fluctuation with power factor is least
c)
difference between primary and secondary voltage is least
d)
difference between primary and secondary voltage is maximum
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SAURABH KUMAR
asked a question
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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
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
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Madhavi Derangula
asked a question
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A 3-phase synchronous motor is running clockwise. If the direction of its field current is reversed- a)the motor will stop
- b)the motor continue to run in the same direction
- c)the winding of the motor will burn
- d)the motor will run in the reverse direction
Correct answer is option 'B'. Can you explain this answer?
A 3-phase synchronous motor is running clockwise. If the direction of its field current is reversed
a)
the motor will stop
b)
the motor continue to run in the same direction
c)
the winding of the motor will burn
d)
the motor will run in the reverse direction
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Shraddha Pawar
asked a question
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In a 3-phase squirrel cage induction motor, applied voltage is reduced to x times its rated value. Then, its starting line current from mains and starting torque by auto-transformer starting would reduce respectively from their corresponding direct switching values by a factor of- a)x, x2
- b)x, x
- c)x2, x2
- d)x2, x
Correct answer is option 'C'. Can you explain this answer?
In a 3-phase squirrel cage induction motor, applied voltage is reduced to x times its rated value. Then, its starting line current from mains and starting torque by auto-transformer starting would reduce respectively from their corresponding direct switching values by a factor of
a)
x, x2
b)
x, x
c)
x2, x2
d)
x2, x
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Mohamed Ashiq
asked a question
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An N- channel JFET, having a pinch – off voltage (Vp) of – 5V shows a transconductance (gm) of 1mA/V. When the applied gate to source voltage (VGS) is – 1V. Its maximum transconductance(in mA/V) is- a)1.5
- b)2.0
- c)2.5
- d)3.0
Correct answer is option 'C'. Can you explain this answer?
An N- channel JFET, having a pinch – off voltage (Vp) of – 5V shows a transconductance (gm) of 1mA/V. When the applied gate to source voltage (VGS) is – 1V. Its maximum transconductance(in mA/V) is
a)
1.5
b)
2.0
c)
2.5
d)
3.0
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Mohamed Ashiq
asked a question
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Thermal runaway is not encountered product- a)IDS has a zero temperature coefficient
- b)IDS has a negative temperature coefficient
- c)IDS has a positive temperature coefficient
- d)The mobility of the carriers increases with increase in temperature
Correct answer is option 'A'. Can you explain this answer?
Thermal runaway is not encountered product
a)
IDS has a zero temperature coefficient
b)
IDS has a negative temperature coefficient
c)
IDS has a positive temperature coefficient
d)
The mobility of the carriers increases with increase in temperature
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Mohamed Ashiq
asked a question
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The output of the 74 series of TTL gates is taken from a BST in- a)totem pole and common collector configuration
- b)either totem pole or open collector configuration
- c)common base configuration
- d)common collector configuration
Correct answer is option 'B'. Can you explain this answer?
The output of the 74 series of TTL gates is taken from a BST in
a)
totem pole and common collector configuration
b)
either totem pole or open collector configuration
c)
common base configuration
d)
common collector configuration
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RANJITH KUMAR
asked a question
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Consider the following statements: A proportional plus derivative controller
1. has high sensitivity
2. increases the stability of the system
3. improves the steady-state accuracy
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 'B'. Can you explain this answer?
Consider the following statements: A proportional plus derivative controller
1. has high sensitivity
2. increases the stability of the system
3. improves the steady-state accuracy
Which of these statements are correct ?
1. has high sensitivity
2. increases the stability of the system
3. improves the steady-state accuracy
Which of these statements are correct ?
a)
1, 2 and 3
b)
1 and 2
c)
2 and 3
d)
1 and 3
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Mohamed Ashiq
asked a question
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The diagonal clipping in amplitude demodulation (using envelope detector) can be avoided if
RC time-constant of the envelope detector satisfies the following condition, (here W is message bandwidth and ωc is) carrier frequency both in rad/sec)- a)
- b)
- c)
- d)
Correct answer is option 'A'. Can you explain this answer?
The diagonal clipping in amplitude demodulation (using envelope detector) can be avoided if
RC time-constant of the envelope detector satisfies the following condition, (here W is message bandwidth and ωc is) carrier frequency both in rad/sec)
RC time-constant of the envelope detector satisfies the following condition, (here W is message bandwidth and ωc is) carrier frequency both in rad/sec)
a)
b)
c)
d)
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Jitu Sharma
asked a question
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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?- 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
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Surender Dharavath
asked a question
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The electrical time-constant of an armature- controlled dc servomotor is- a)larger than mechanical time-constant
- b)not related to mechanical time-constant
- c)equal to mechanical time-constant
- d)smaller than mechanical time-constant
Correct answer is option 'D'. Can you explain this answer?
The electrical time-constant of an armature- controlled dc servomotor is
a)
larger than mechanical time-constant
b)
not related to mechanical time-constant
c)
equal to mechanical time-constant
d)
smaller than mechanical time-constant
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Kratika Sharma
asked a question
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A full adder is to be implemented using half adders and OR gates. A 4 bit parallel adder without any initial carry requires- a)8 half adders and 4 OR gates
- b)8 half adders and 3 OR gates
- c)7 half adders and 3 OR gates
- d)7 half adders and 4 OR gates
Correct answer is option 'C'. Can you explain this answer?
A full adder is to be implemented using half adders and OR gates. A 4 bit parallel adder without any initial carry requires
a)
8 half adders and 4 OR gates
b)
8 half adders and 3 OR gates
c)
7 half adders and 3 OR gates
d)
7 half adders and 4 OR gates
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Mohamed Ashiq
asked a question
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The choice of the product RC in a simple envelope detector using a diode and an RC circuit is governed by- a)both the lowest and the highest modulation frequencies
- b)the depth of modulation and the lowest modulation frequency
- c)the highest modulation frequency and the depth of modulation
- d)the carrier frequency
Correct answer is option 'A'. Can you explain this answer?
The choice of the product RC in a simple envelope detector using a diode and an RC circuit is governed by
a)
both the lowest and the highest modulation frequencies
b)
the depth of modulation and the lowest modulation frequency
c)
the highest modulation frequency and the depth of modulation
d)
the carrier frequency
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NEELAM KUMARI
asked a question
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In a hydroelectric plant, the available head is 80 m for a discharge 12m3/sec, and overall efficiency of the PowerStation of 80%. The specific weight of water is 9.81 k/m2. Then the power developed is – (in MW)
Correct answer is between '7.5,7.55'. Can you explain this answer?
In a hydroelectric plant, the available head is 80 m for a discharge 12m3/sec, and overall efficiency of the PowerStation of 80%. The specific weight of water is 9.81 k/m2. Then the power developed is – (in MW)
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Jadhav Shireesha
asked a question
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Consider two transformers X and Y having exact ratings, but have flux densities of 1.5T and 2T respectively. The weight of the transformer A per KVA will be- a)more than that of B
- b)lesser than that of B
- c)equal to that of B
- d)can not be said from the given data
Correct answer is option 'A'. Can you explain this answer?
Consider two transformers X and Y having exact ratings, but have flux densities of 1.5T and 2T respectively. The weight of the transformer A per KVA will be
a)
more than that of B
b)
lesser than that of B
c)
equal to that of B
d)
can not be said from the given data
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Harsha Sonarthi Sonarthi
asked a question
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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
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
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PRINCE KUMAR
asked a question
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Which one of the following statement is correct ? The effects of phase lead compensator on gain crossover frequency (wcg) and the bandwidth (BW) are- a)that both are decreased
- b)that wcg is decreased but BW is increased
- c)that wcg is increased but BW is decreased
- d)that both are increased
Correct answer is option 'D'. Can you explain this answer?
Which one of the following statement is correct ? The effects of phase lead compensator on gain crossover frequency (wcg) and the bandwidth (BW) are
a)
that both are decreased
b)
that wcg is decreased but BW is increased
c)
that wcg is increased but BW is decreased
d)
that both are increased
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Reham Sham
asked a question
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capacitance of the line is proportional to the length performance of short having a length less than 80 kilometres and low voltage transmission line In the case of high voltage and long lines it is considered as one of the most important parameters Capacitance of two wire line the capacitance of the transmission line along with the conductances forms the shunted mittens the conductance in the transmission line is because of the leakage over the surface of the conductor Considered a line consisting of two conductors and the each of radius are the distance between the conductors being de-shown in the diagram below minus the potential difference between the conductors and the is where QA charge on conductor at QV Related: Capacitance of Transmission Lines?
Related: Capacitance of Transmission Lines
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Ranjith M
asked a question
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(Q.8 –Q.10) Consider the amplifier circuit shown below. The transistor is specified to have Vt = 0.4 V, kn = 0.4 mA/V2, W/L = 10 and λ = 0. Also, let VDD = 1.8V, RD = 17.5kΩ, VGS = 0.6V and vgs = 0V.
Q. Find ID.- a) 0.08 mA
- b) 0.16 mA
- c)0.4 mA
- d) 0.8 mA
Correct answer is option 'A'. Can you explain this answer?
(Q.8 –Q.10) Consider the amplifier circuit shown below. The transistor is specified to have Vt = 0.4 V, kn = 0.4 mA/V2, W/L = 10 and λ = 0. Also, let VDD = 1.8V, RD = 17.5kΩ, VGS = 0.6V and vgs = 0V.
Q. Find ID.
Q. Find ID.
a)
0.08 mA
b)
0.16 mA
c)
0.4 mA
d)
0.8 mA
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