Field Effect Transistor (FET)

A JFET has three terminals, namely …………

• 1. cathode, anode, grid

• 1. emitter, base, collector

• 1. source, gate, drain

• 1. none of the above

A JFET is also called …………… transistor

• 1. unipolar

• 1. bipolar

• 1. unijunction

• 1. none of the above

A JFET is a ………… driven device

• 1. current

• 1. voltage

• 1. both current and voltage

• 1. none of the above

In a p-channel JFET, the charge carriers are …………..

• 1. electrons

• 1. holes

• 1. both electrons and holes

• 1. none of the above

When drain voltage equals the pinch-off-voltage, then drain current …………. with the increase in drain voltage

• 1. decreases

• 1. increases

• 1. remains constant

• 1. none of the above

The input control parameter of a JFET is ……………

• 1. gate voltage

• 1. source voltage

• 1. drain voltage

• 1. gate current

A JFET has high input impedance because …………

• 1. it is made of semiconductor material

• 1. input is reverse biased

• 1. of impurity atoms

• 1. none of the above

In a JFET, when drain voltage is equal to pinch-off voltage, the depletion layers ………

• 1. almost touch each other

• 1. have large gap

• 1. have moderate gap

• 1. none of the above

The pinch-off voltage of a JFET is about ……….

• 1. 5 V

• 1. 0.6 V

• 1. 15 V

• 1. 25 V

In a FET, there are ……….. pn junctions at the sides

• 1. five

• four

• three

• two