Exercise: Analog Electronics

Questions for: Analog Electronics

In the graphical analysis of CE amplifier circuit, the upper end of load line is called
A:
saturation point
B:
cut off point
C:
Q point
D:
none of the above
Answer: A

Current is maximum at saturation point.

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In CE amplifier the base current is very high.
A:
True
B:
False
C:
D:
Answer: B

Base current is small.

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In an amplifier the stray capacitances assume impedance at low frequencies
A:
True
B:
False
C:
D:
Answer: B

Stray capacitances assume importance at high frequencies because .

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Which component is allowed to pass through it by a choke filter?
A:
Dc
B:
Ac
C:
Both dc and ac
D:
Only high frequency ac
Answer: A

XL is zero for dc.

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The purpose of connecting a coupling capacitor in the output circuit of an amplifier is
A:
to increase voltage gain
B:
to increase collector current
C:
to block dc collector voltage
D:
all of the above
Answer: C

Capacitor acts for ac or dc.

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