71. What common factor determines the voltage gain and input resistance of a common-gate amplifier?
(a) RD
(b) RL
(c)
(d)
72. The input resistance at the gate of a FET is extremely
(a) high.
(b) low. Answer:
(c)
(d)
73. E-MOSFETs are generally used in switching applications because
(a) of their very low input capacitance.
(b) of their threshold characteristic (VGS(th)).
(c) of their high-frequency response capabilities.
(d) of their power handling.
74. Class D amplifiers differ from all other classes of amplifiers because
(a) the output transistors are operated as switches.
(b) of their very low input capacitance.
(c) of their high-frequency response capabilities.
(d) they employ dual MOSFETs.
75. What limits the signal amplitude in an analog MOSFET switch?
(a) the switch input capacitance
(b) VGS(th)
(c) the switch’s power handling
(d) VDS
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