BJT and FET Frequency Response – Exercise – 1

36. A 3-dB drop in hfe will occur at a frequency defined by ________.

(a)
(b)
(c) 1
(d) 2

Answer
Answer : (b)
Explanation
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37. Which of the following capacitors is (are) included in Ci for the high-frequency region of a BJT or FET amplifier?

(a) Input wiring capacitance
(b) The transition capacitance ()
(c) Miller capacitance
(d) All of the above

Answer
Answer : (d)
Explanation
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38. What magnitude voltage gain corresponds to a decibel gain of 50?

(a) 31.6238
(b) 316.228
(c) 3162.38
(d) 31623.8

Answer
Answer : (b)
Explanation
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39. What is the ratio of the common logarithm of a number to its natural logarithm?

(a) 0.435
(b) 2
(c) 2.3
(d) 3.2

Answer
Answer : (c)
Explanation
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40. By what factor does an audio level change if the power level changes from 4 W to 4096 W?

(a) 2
(b) 4
(c) 6
(d) 8

Answer
Answer : (c)
Explanation
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