1. When the JFET is no longer able to control the current, this point is called the ?

breakdown region

depletion region

saturation point

pinch-off region

Answer: breakdown region

Explanation:


2. The transconductance of FET depends upon ?

Drain supply

The type of FET

Gate to source voltage

Gate current

Answer: Gate to source voltage

Explanation:


3. For a p-channel FET, What is the direction of current flow ?

Source to drain

Drain to source

Gate to source

Gate to drain

Answer: Source to drain

Explanation:


4. A very simple bias for a D-MOSFET is called ?

self biasing

gate biasing

zero biasing

voltage-divider biasing

Answer: zero biasing

Explanation:


5. JFETs cascode means ?

Two FETs connected in parallel

A common gate driving a common source connection

A common gate source driving a common gate connection

None of the above

Answer: A common gate source driving a common gate connection

Explanation:


6. How will a D-MOSFET input impedance change with signal frequency ?

As frequency increases input impedance increases

As frequency increases input impedance is constant

As frequency decreases input impedance increases

As frequency decreases input impedance is constant

Answer: As frequency decreases input impedance increases

Explanation:


7. The voltage gain of casade amplifier using FET is ?

Product of two voltage gains

Equal to C.D amplifier

Almost equal to C.S amplifier

None of the above

Answer: Product of two voltage gains

Explanation:


8. A MOSFET has how many terminals ?

2 or 3

3

4

3 or 4

Answer: 3 or 4

Explanation:


9. With a JFET, a ratio of output current change against an input voltage change is called ?

transconductance

siemens

resistivity

gain

Answer: transconductance

Explanation:


10. The operation of a JFET involves a flow of ?

Recombination carriers

Majority carriers

Minority carriers

Any of the above

Answer: Majority carriers

Explanation: