Exercise: Analog Electronics

Questions for: Analog Electronics

Assertion (A): A dc stabilizer has constant output voltage irrespective of variations in input voltage and load current

Reason (R): A dc series regulator uses a zener diode across the load to stabilize the output voltage.

A:
Both A and R are correct and R is correct explanation for A
B:
Both A and R are correct but R is not correct explanation for A
C:
A is correct R is wrong
D:
A is wrong R is correct
Answer: B
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The main use of JFET with a
A:
frequency mixer
B:
source follower
C:
voltage doubler
D:
trigger
Answer: B
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The static characteristic of an adequately forward biased p-n junction is a straight line if the plot is of
A:
log I vs log V
B:
log I vs V
C:
I vs log V
D:
I vs V
Answer: B
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Gain stability in an oscillator can bs achieved by
A:
providing negative feedback
B:
providing positive feedback
C:
using low Q circuits
D:
controlling the gain
Answer: D
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For a good voltage amplifier, its input impedance should be
A:
low as compared to the resistance of the source
B:
high as compared to the resistance of the source
C:
always inductive
D:
always capacitive
Answer: B
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