1. N-channel FETs are superior to P-channel FETs because ?

They have a higher switching

They have a higher input impedance

Mobility of electron is greater than that of holes

All of the above

Answer: Mobility of electron is greater than that of holes

Explanation:


2. The drain of FET is analogous to ......... of BJT ?

Emitter

Base

Collector

Substrate

Answer: Collector

Explanation:


3. The gate-source diode of a JFET should be ?

Unbiased

Reverse biased

Forward biased

None of the above

Answer: Reverse biased

Explanation:


4. The drain current of the N-channel JFET increases with ?

Increasing positive voltage at the gate

Constant voltage at the gate

Decreasing positive voltage at the gate

None of the above

Answer: Increasing positive voltage at the gate

Explanation:


5. The transconductance curve of a JFET is a graph of ?

IS versus VDS

IC versus VCE

ID versus VGS

ID × RDS

Answer: ID versus VGS

Explanation:


6. FETs are preferred to BJTs at high frequencies because they are ?

Less noisy

Capable of handling highest frequencies

Easy to fabricate

All of the above

Answer: All of the above

Explanation:


7. A FET can be used as a variable ?

Inductor

Capacitor

Resistor

Voltage source

Answer: Resistor

Explanation:


8. Which component is considered to be an "OFF" device ?

transistor

JFET

D-MOSFET

E-MOSFET

Answer: E-MOSFET

Explanation:


9. FET acts as constant current source in ?

Ohmic region

Breakdown region

Pinch off region

Both (B and (C)

Answer: Pinch off region

Explanation:


10. A FET, for its operation, depends on the variation of ?

Forward-biased junction

Reversed-biased junction

Magnetic field

The depletion-layer width with reverse voltage

Answer: The depletion-layer width with reverse voltage

Explanation: