BJT Amplifiers – Exercise – 2

81. ________ can be applied to determine the response of the ac equivalent circuit.

(a) Mesh analysis
(b) Node analysis
(c) Thevenin’s theorem
(d) All of the above

Answer
Answer : (d)
Explanation
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82. In a voltage-divider bias configuration, there can be a measurable difference in the results for ________ if the condition ro 10RC is not satisfied.

(a) Zo
(b) Av
(c) Ai
(d) All of the above

Answer
Answer : (c)
Explanation
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83. The bypass capacitor in a common-emitter configuration ________ the voltage gain.

(a) significantly decreases
(b) significantly increases
(c) slightly increases
(d) slightly decreases

Answer
Answer : (b)
Explanation
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84. The output voltage and the input voltage are ________ for the common-emitter configuration.

(a) in phase
(b) 45º out of phase
(c) 90º out of phase
(d) 180º out of phase

Answer
Answer : (d)
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85. The common-emitter configuration has a ________ level of input impedance with a ________ voltage and current gain.

(a) moderate, high
(b) low, moderate
(c) low, low
(d) high, low

Answer
Answer : (a)
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