# Ifis equal to

1.  1

2.  -1

3.  -2

4.  2

4

2

Explanation :
No Explanation available for this question

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

4

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.

4

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

4

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

4

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

4

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

4

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

4

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.

4

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

4