1. The charge carriers in an N-channel JFET are ?

Electrons

Neutrons

Protons

Holes

Answer: Electrons

Explanation:


2. In FET the drain voltage above which there is no increase in the drain current is called........ voltage ?

Critical

Pinch off

Breakdown

Pick off

Answer: Pinch off

Explanation:


3. The characteristics of JFET are similar to ?

MOSFET

SCR

Triode

Pentode

Answer: Pentode

Explanation:


4. N-channel FETs are superior to p-channel FETs because ?

They have high switching time

Mobility of electrons is greater than that of holes

They consume less power

Mobility of electrons is smaller than that of holes

Answer: Mobility of electrons is greater than that of holes

Explanation:


5. The preferred from of biasing a JFET amplifier is ..... bias ?

Self

Drain

Source

Gate

Answer: Source

Explanation:


6. The main use of a JFET is with a ?

Trigger

Source follower

Snubber

Frequency mixer

Answer: Source follower

Explanation:


7. In a FET ?

The channel is lightly doped and gate is heavily doped

The channel is lightly doped and gate is lightly doped

The channel is heavily doped and gate is lightly doped

The channel is heavily doped and gate is heavily doped

Answer: The channel is lightly doped and gate is heavily doped

Explanation:


8. When a JFET is pinched off, the depletion layers are ?

Conducting

Close together

Touching

Far apart

Answer: Close together

Explanation:


9. One of the major applications of JEFT is in ?

Switching

Electron flow regulation

Constant voltage source

Constant current source

Answer: Switching

Explanation:


10. Which of the following statement is true about FET ?

It has high output impedance

It has high input impedance

It has low input impedance

It does not offer any resistance

Answer: It has high input impedance

Explanation: