# BJT and FET Frequency Response – Exercise – 2

Exercise – 2

51. At very high frequencies, the effect of Ci is to ________ the total impedance of the parallel combination of R1, R2, R3, and Ci. (a) increase (b) maintain (c) decrease (d) None of the above

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52. The logarithm of a number ________ than 1 is always ________. (a) greater, negative (b) less, positive (c) less, negative (d) None of the above

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53. The decibel (dB) is defined such that ________ decibel(s) = ________ bel(s). (a) 1, 10 (b) 10, 1 (c) 1, 1 (d) 10, 10

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54. A change in frequency by a factor of 2 results in a ________ change in the ratio of the normalized gain. (a) 3-dB (b) 6-dB (c) 10-dB (d) 20-dB

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55. In the input RC circuit of a single-stage BJT or FET amplifier, as the frequency ________, the capacitive reactance ________ and ________ of the input voltage appears across the output terminals. (a) increases, decreases, more (b) increases, decreases, less (c) increases, increases, more (d) decreases, decreases, less