# The common emitter amplifier shown in given Fig. is biased using a 1 mA ideal current source approximate base current value is:

1.  0 μA

2.  10 μA

3.  100 μA

4.  1000 μA

4
Correct Answer :

10 μA

Explanation :
No Explanation available for this question

# Consider the inverting amplifier, using an ideal operational amplifier shown in  given Fig.The designer wishes to realize the input resistance seen by the small- signal source to be as large as possible,while keeping the voltage gain between -10 and -25.The upper limit on RF is 1 MΩ.The value of R1 should be

1.  Infinity

2.  1 MΩ

3.  100 kΩ

4.  40 kΩ

4
Correct Answer :

100 kΩ

Explanation :
No Explanation available for this question

# The typical frequency response of a two-stage direct coupled voltage amplifier is as shown in

1.

2.

3.

4.

4
Correct Answer :

Explanation :
No Explanation available for this question

# In given Fig.if the input is a sinusoidal signal, the output will appear as shown in

1.

2.

3.

4.

4
Correct Answer :

Explanation :
No Explanation available for this question

# Select the circuit, which will produce the given output Q for the input signals X1 and X2 given in  given Fig

1.

2.

3.

4.

4
Correct Answer :

Explanation :
No Explanation available for this question

# If X1 and X2 are the inputs to the circuit shown in  given Fig the output Q is:

1.

2.

3.

4.

4
Correct Answer :

Explanation :
No Explanation available for this question

# In given fig as long as X1=1 and X2=1,the output Q remains

1.  at 1

2.  at 0

3.  at its initial value

4.  unstable

4
Correct Answer :

at 1

Explanation :
No Explanation available for this question

# in given Fig shows the voltage across a power semiconductor device and the current through the device during a switching transition.Is the transition a turn ON transition or a turn OFF transitionWhat is the energy lost during the transition?

1.  Turn ON, (VI/2)(t1 +t2)

2.  Turn OFF, VI (t1 + t2)

3.  Turn ON, VI (t1 + t2)

4.  Turn OFF, (VI/2)(t1+ t2)

4
Correct Answer :

Turn OFF, (VI/2)(t1+ t2)

Explanation :
No Explanation available for this question

# An electronic switch S is required to block voltages of either polarity during its OFF state as shown in Fig.This switch is required to conduct in only one direction during its ON state as shown in given Fig. Which of the following are valid realizations of the switch S

1.  Only P

2.  P and Q

3.  P and R

4.  R and S

4
Correct Answer :

P and R

Explanation :
No Explanation available for this question

# In given Fig shows a step-down chopper switched at 1 KHz with a duty ratio D = 0.5.The peak-peak ripple in the load current is dose to

1.  10 A

2.  0.5 A

3.  0.125 A

4.  0.25 A

4
Correct Answer :

0.125 A

Explanation :
No Explanation available for this question

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