Electronics and Communication Engineering - Analog Electronics

6. 

The transconductance curve of a JFET is

A. a straight line
B. parabolic
C. hyperbolic
D. inverted V-type

Answer: Option B

Explanation:

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7. 

The input resistance R, of an ideal voltage amplifier is __________ and that of a current amplifier is __________ .

A. zero, zero
B. infinite, infinite
C. zero, infinite
D. infinite, zero

Answer: Option D

Explanation:

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8. 

In CE amplifier circuit, voltage gain is directly proportional to

A. β
B. collector supply voltage
C. base resistance
D. none of the above

Answer: Option A

Explanation:

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9. 

The heat sink disposes off heat mainly by

A. radiation
B. natural convection
C. forced convection
D. conduction

Answer: Option B

Explanation:

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10. 

A major advantage of TWT over a Klystron lies in its

A. higher bandwidth
B. higher gain
C. higher frequency
D. higher output

Answer: Option B

Explanation:

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