# In the circuit shown in the given figure, assuming that the capacitor C is almost shorted for the frequency range of interest of the input signal, voltage gain of the amplifier will be approximately

1.  0.33

2.  0.5

3.  0.66

4.  1.

4

1.

Explanation :
No Explanation available for this question

# What will be the input independence Zi for the network shown below

1.  560

2.  56.05?

3.  937?

4.  617.7?.

4

560

Explanation :
No Explanation available for this question

# If an npn transistor has a beta cut-off frequency fB of 1MHz, and emitter short circuit has frequency current gain β0 of 200, then unity of frequency fT and alpha cut off frequency respectively are

1.  200 MHz, 201 MHz

2.  200 MHz, 199MHz

3.  199 MHz, 200MHz

4.  201 MHz, 200MHz.

4

200 MHz, 201 MHz

Explanation :
No Explanation available for this question

# If an npn transistor (with C=0.3 Pf) has a unity gain cut-off frequency fT of 400 MHz at a drain bias current IC=1mA, then the value of its C approximately(VT=26 mV)

1.  15

2.  30

3.  50

4.  96.

4

15

Explanation :
No Explanation available for this question

# The voltage VCB and current IB for the CB-configuration of the figure shown below will be

1.  3.4 V and 45.8 A

2.  6V and 2.75 mA

3.  34V and 4.5mA

4.  None of these.

4

3.4 V and 45.8 A

Explanation :
No Explanation available for this question

# Mirror current I of the given current is

1.  10.27mA

2.  12.53mA

3.  0.636mA

4.  10.90mA.

4

10.27mA

Explanation :
No Explanation available for this question

# Current I for the circuit shown will be

1.  3 mA

2.  2.81 mA

3.  6.16 mA

4.  10 mA.

4

3 mA

Explanation :
No Explanation available for this question

# For a class B amplifier providing a 20 V per signal to 16 load and a power supply of VCC to V, efficiency will be

1.  52.3%

2.  25.65%

3.  75%

4.  78.6%

4

52.3\%

Explanation :
No Explanation available for this question

# A multistage amplifier has a low-pass response with three real poles at s =-ω1, s=-ω2 and s=-ω3.the approximate overall bandwidth B of the amplifier is given by

1.  B=ω1+ω2+ω3

2.

3.  B= (ω1 ω2 ω3)1/3

4.

4

Explanation :
No Explanation available for this question

1.  4MHz, 60Hz

2.  3MHz, 20Hz

3.  3MHz, 60Hz

4.  4MHz, 20Hz.

4