Exercise: Analog Electronics

Questions for: Analog Electronics

Class C operation finds application in
A:
RF power amplifiers
B:
frequency multipliers
C:
both (a) and (b)
D:
neither (a) nor (b)
Answer: C
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In high frequency region, an amplifier behaves like a
A:
band pass filter
B:
low pass filter
C:
high pass filter
D:
any of the above
Answer: B
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The transformer cores operating at microwave frequency ranges are generally made up of
A:
silicon steel
B:
ferrites
C:
albino
D:
super alloy
Answer: B
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In a feedback series regular circuit, the output voltage is regulated by controlling the
A:
magnitude of the I/P voltage
B:
gain of the feed back BJT
C:
reference Voltage
D:
voltage drop across the series pass transistor
Answer: D
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A multistage amplifier has a low pass response with three real poles at s = - w1 - w2 and w3. The approximate overall bandwidth B of the amplifier will be given by
A:
B = w1 + w2 + w3
B:
C:
B = (w1 + w2 + w3)1/3
D:
B = w12 + w22 + w32
Answer: A
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