BJT Amplifiers - General Questions (7)

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BJT Amplifiers - General Questions

49. 

What is the unit of the parameter ho?
A. Volt
B. Ohm
C. Siemen
D. No unit

Answer: Option C

Explanation:

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50. 

What is the typical range of the output impedance of a common-emitter configuration?
A. 10 omega (2) to 100 omega (2)
B. 1 k omega (2) to 5 k omega (2)
C. 40 omega (2) to 50 k omega (2)
D. 500 k omega (2) to 1 k omega (2)

Answer: Option C

Explanation:

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51. 

The advantage that a Sziklai pair has over a Darlington pair is
A. higher current gain.
B. less input voltage is needed to turn it on.
C. higher input impedance.
D. higher voltage gain.

Answer: Option B

Explanation:

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52. 

What is the range of the input impedance of a common-base configuration?
A. A few ohms to a maximum of 50 omega (1)1
B. 1 k omega (1)1 to 5 k omega (1)1
C. 100 k omega (1)1 to 500 k omega (1)1
D. 1 M omega (1)1 to 2 M omega (1)1

Answer: Option A

Explanation:

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53. 

A common-emitter amplifier has ________ voltage gain, ________ current gain, ________ power gain, and ________ input impedance.
A. high, low, high, low
B. high, high, high, low
C. high, high, high, high
D. low, low, low, high

Answer: Option B

Explanation:

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54. 

What is the voltage gain of a feedback pair connection?
A. 1
B. –1
C. 100
D. –100

Answer: Option A

Explanation:

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55. 

You have a need to apply an amplifier with a very high power gain. Which of the following would you choose?
A. common-collector
B. common-base
C. common-emitter
D. emitter-follower

Answer: Option C

Explanation:

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56. 

Refer to this figure. Calculate the value of VB.

mcq6_1009_1 (2)
A. 5 V
B. 3.7 V
C. 20 V
D. 3 V

Answer: Option B

Explanation:

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