Ifis equal to

1.  1

2.  -1

3.  -2

4.  2

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

Steady flow occurs when

1.  Pressure does not change along the flow

2.  Velocity does not change

3.  Conditions change gradually with time

4.  Conditions do not change with time at any point

View Answer  
4
Correct Answer :

Conditions do not change with time at any point


Explanation :
No Explanation available for this question

Given figure represents ac equivalent circuit of a parallel voltage feedback amplifier stage. If hfe, hfc are h parameters in common emitter and common collector operations respectively at Q, then current gain(I0/It) of this stage is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

An amplifier with mid-band gain |A|=500 has negative feedback β=If hupper cut-off without feedback were at 60Hz, then with feedback it would become

1.  10kHz

2.  12kHz

3.  300kHz

4.   360kHz

View Answer  
4
Correct Answer :

360kHz


Explanation :
No Explanation available for this question

Feedback factor for the circuit shown in the given figure is

1.  9/100

2.  9/10

3.  1/9

4.   1/100

View Answer  
4
Correct Answer :

1/100


Explanation :
No Explanation available for this question

If differential amplifier has a differential gain of 20,000.CMRR=80dB, then common mode gain is

1.  2

2.  1

3.  1/2

4.   0

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

In the op-Amp circuit shown in the given figures V0 is given by

1.  2Vs

2.  -2Vs

3.  3Vs

4.   -3Vs

View Answer  
4
Correct Answer :

3Vs


Explanation :
No Explanation available for this question

OPAMP used as a tuned amplifier has the tuned circuit connected

1.  Across input

2.  Across series impedance at the input

3.  Across feedback impedance Zf

4.   Across ouput

View Answer  
4
Correct Answer :

Across feedback impedance Zf


Explanation :
No Explanation available for this question

for the circuit shown in the given figure, assuming ideal diodes, output waveform V0 will be

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

In the OP-AMP based wein bridge RC oscillator shown in the given figure, R2 is invariably a resistor having

1.  Negative temperature coefficient

2.  Positive voltage dependence

3.  Positive temperature coefficient

4.   Negative voltage dependence

View Answer  
4
Correct Answer :

Positive temperature coefficient


Explanation :
No Explanation available for this question
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