# Which of the following correctly represents hoe in terms of CB – h parameters

1.  hoe = 1/( hob (1 + hrb ) ( 1 + hfb ) + hib )

2.  hoe = hob / ( hib (1 + hrb ) ( 1 + hfb ) + hob )

3.  hoe = hob / ( hrb (1 + hrb ) ( 1 + hfb ) + hib )

4.  hoe = hob / ( hob (1 + hrb ) ( 1 + hfb ) + hib )

4

hoe = 1/( hob (1 + hrb ) ( 1 + hfb ) + hib )

Explanation :
No Explanation available for this question

# The loop gain T(s) of the oscillator is

1.

2.

3.

4.  None

4

None

Explanation :
No Explanation available for this question

# For the conductance amplifier shown below, the feedback factor β is (Biasing is not shown)

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# What is the value o f (R2/R1) required for sustained oscillation

1.  (R2/R1)=1/2

2.  (R2/R1)=3

3.   (R2/R1)=2

4.  (R2/R1)=1/3

4

(R2/R1)=2

Explanation :
No Explanation available for this question

# The frequency of oscillation (fosc) is

1.

2.

3.

4.  None

4

Explanation :
No Explanation available for this question

# Which one of the following will gives stable audio frequencies

1.  Wein bridge oscillator

2.  RC- Phase shift oscillator

3.  Hartley oscillator

4.  Crystal oscillator

4

Wein bridge oscillator

Explanation :
No Explanation available for this question

# Which of the following is correct regarding input impedance of amplifier configuration

1.   ZCB > ZCC > ZCE

2.  ZCC > ZCB > ZCE

3.  ZCC > ZCE > ZCB

4.  None

4

ZCC > ZCE > ZCB

Explanation :
No Explanation available for this question

# Which of the following is correct regarding input impedance of amplifier configuration

1.   ZCB > ZCE > ZCC

2.  ZCB > ZCC > ZCE

3.  ZCC > ZCE > ZCB

4.   ZCC > ZCB > ZCE

4

ZCB > ZCE > ZCC

Explanation :
No Explanation available for this question

# h – parameter hr & ho of common emitter amplifier are so small then voltage gain of the darlington pair shown below when both transistors are not same

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.   -24080 V/V

2.  -2408 V/V

3.   -24040 V/V

4.   None

4