Electronic Devices - BJT Amplifiers

Exercise :: BJT Amplifiers - General Questions

61. 

What is re equal to in terms of h parameters?

A. hre / hoe
B. (hre + 1) / hoe
C. hie – (hre / hoe)(1 + hfe)
D. hfe
E. none of the above

Answer: Option A

Explanation:

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62. 

What is the controlling current in a common-base configuration?

A. Ie
B. Ic
C. Ib
D. None of the above

Answer: Option A

Explanation:

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63. 

Which of the following techniques can be used in the sinusoidal ac analysis of transistor networks?

A. Small-signal
B. Large-signal
C. Small- or large-signal
D. None of the above

Answer: Option C

Explanation:

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64. 

The input impedance of a BJT amplifier is purely ________ in nature and can vary from a few ________ to ________.

A. resistive, ohms, megohms
B. capacitive, microfarads, farads
C. inductive, millihenrys, henrys
D. None of the above

Answer: Option A

Explanation:

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65. 

The ________ the source resistance and/or ________ the load resistance, the less the overall gain of an amplifier.

A. smaller, smaller
B. smaller, larger
C. larger, smaller
D. larger, larger

Answer: Option C

Explanation:

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