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ECE Objective Questions { FET and FET Amplifiers }

85. When drain voltage equals the pinch-off voltage, then drain current with the increase in drain voltage.
A. decreases
B. increases
C. remains constant
D. none of the above

86.  If the reverse bias on the gate of a JFET is increased, then width of the conducting channel
A. is decreased
B. is increased
C. remains the same
D. none of the above

87. A MOSFET has ___ terminals.
A. two
B. five
C. four
D. three

88. A MOSFET can be operated with
A. negative gate voltage only
B. positive gate voltage only
C. positive as well as negative gate vltage
D. none of the above

89. A JFET has power gain.
A. small
B. very high
C. very small
D. none of the above

90. The input control parameter of a JFET is
A. gate voltage
B. source voltage
C. drain voltage
D. gate current

91. A common base configuration of a pnp transistor is analogous to of a JFET.
A. common source configuration
B. common drain configuration
C. common gate configuration
D. none of the above

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