Exercise: Analog Electronics

Questions for: Analog Electronics

In a common Emitter BJT amplifier, the maximum usable supply voltage is limited by
A:
avalanche breakdown of Base emitter junction
B:
collector to Base Breakdown voltage with emitter open (ÎēVCBO)
C:
collector Emitter Breakdown voltage with base open (ÎēVCBO)
D:
zener breakdown voltage of the emitter base Junction
Answer: D
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Assertion (A): The maximum efficiency of a class B push pull amplifier is 78.5%

Reason (R): A current mirror uses a compensating diode in parallel with the emitter diode

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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Wide banding technique is employed in the
A:
video amplifier of a TV receiver
B:
IF amplifier of an FM receiver
C:
RF amplifier of an AM receiver
D:
input section of a communication receiver
Answer: A
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In a N-P-N transistor of the emitter junction is reverse biased and collector junction is also reversed biased, the transistor will operate in
A:
active region
B:
saturation region
C:
cut-off region
D:
inverted region
Answer: C
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RC oscillator can be used upto
A:
1 kHz
B:
10 kHz
C:
50 kHz
D:
100 kHz
Answer: B
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