# In the circuit of Fig.P1.2, the value of the voltage source E is

1.   -16 V

2.  4 V

3.  -6V

4.  16 V

4
Correct Answer :

-16 V

Explanation :
No Explanation available for this question

1.

2.

3.

4.  None of the above

4
Correct Answer :

Explanation :
No Explanation available for this question

# In  the  differential  amplifier  of  Fig.P1.4,  if  the source  resistance  of  the  current  source IEEis infinite, then the common-mode gain is

1.  Zero

2.  Infinate

3.  Indeterminate

4.

4
Correct Answer :

Infinate

Explanation :
No Explanation available for this question

# In the circuit of Fig.P.15,  Vo is

1.  -1 v

2.  2 v

3.  +1 v

4.  +15 v

4
Correct Answer :

+1 v

Explanation :
No Explanation available for this question

# The current gain of a bipolar transistor drops at high frequencies because of

1.  transistor capacitances

2.  high current effects in the base

3.   parasitic inductive elements

4.  the Early effect

4
Correct Answer :

parasitic inductive elements

Explanation :
No Explanation available for this question

# Introducing  a  resistor  in  the  emitter  of  a  common  amplifier  stabilizes  the  dc operating point against variations in

1.  only the temperature

2.  only the β of the transistor

3.  both temperature and β

4.  none of the above

4
Correct Answer :

only the temperature

Explanation :
No Explanation available for this question

# An amplifier with  resistive negative  feedback has  two  left half-plane poles  in  it open-loop transfer function. The amplifier

1.  will always be unstable at high frequencies

2.  will be stable for all frequencies

3.  may be unstable, depending on the feedback factor

4.  will oscillate at low frequencies

4
Correct Answer :

will be stable for all frequencies

Explanation :
No Explanation available for this question

# If the op-amp in Fig.P.1.9, is ideal, then  vo , is

1.  Zero

2.  (V1-V2)sin ωt

3.  -(V1+V2)sin ωt

4.  ( V1+V2)sin ωt

4
Correct Answer :

-(V1+V2)sin ωt

Explanation :
No Explanation available for this question

# The configuration of Fig.P.1.10 is a

1.  precision integrator

2.  Hartley oscillator

3.  Butterworth highpass filter

4.  Wien-bridge oscillator

4
Correct Answer :

Wien-bridge oscillator

Explanation :
No Explanation available for this question

# Assume  that  the  op-amp  of  Fig.P1.11  is  ideal.  If  V1 is  a  triangular  wave,  then v­0 will be

1.  square wave

2.  triangular wave

3.  parabolic wave

4.  sine wave

4
Correct Answer :

square wave

Explanation :
No Explanation available for this question

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