Exercise: Analog Electronics

Questions for: Analog Electronics

In CE amplifier circuit, voltage gain is directly proportional to
A:
Îē
B:
collector supply voltage
C:
base resistance
D:
none of the above
Answer: A
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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: D
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The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load
A:
current is high
B:
current is low
C:
voltage is high
D:
voltage is low
Answer: B
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If 1.5% of the output of an amplifier is feedback positively to the input, the minimum gain required of the amplifier for oscillations to occur, is
A:
16.6
B:
44.4
C:
66.6
D:
75
Answer: C
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A certain transistor has adc of 0.98 and a collectors leakage current of 5 ΞA. If IE = 1 mA, the collector current will be
A:
1.005 mA
B:
0.985 mA
C:
0.975 mA
D:
0.955 mA
Answer: B
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