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.Management Sciences
Category: Field Effect Transistors – FET
A certain common-source JFET has a voltage gain of 10. If the source bypass capacitor is removed, ______________?
A. the voltage gain will increase
B. the transconductance will increase
C. the voltage gain will decrease
D. the Q-point will shift
In a JFET, when drain voltage is equal to pinch-off voltage, the depletion layers ______________?
A. almost touch each other
B. have large gap
C. have moderate gap
D. none of the above
Which of the following devices has the highest input impedance ?
A. JFET
B. MOSFET
C. Crystal diode
D. ordinary transistor
A MOSFET differs from a JFET mainly because _________________?
A. of power rating
B. the MOSFET has two gates
C. the JFET has a pn junction
D. none of the above
The source terminal of a JEFT corresponds to _____________ of a vacuum tube?
A. plate
B. cathode
C. grid
D. none of the above
A MOSFET is sometimes called______________ JFET?
A. many gate
B. open gate
C. insulated gate
D. shorted gate
The output characteristics of a JFET closely resemble the output characteristics of a ___________ valve?
A. pentode
B. tetrode
C. triode
D. diode
In a JFET, IDSS is known as ________________?
A. drain to source current
B. drain to source current with gate shorted
C. drain to source current with gate open
D. none of the above
A JFET is a__________ driven device?
A. current
B. voltage
C. both current and voltage
D. none of the above
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