Field-Effect Transistors (FET)

This is an MCQ-based quiz on Field-Effect Transistors.

This includes Triode, Ordinary Transistor, Tetrode, JFET, MOSFET, Crystal diode, and Ordinary transistor.

Start Quiz

FET acts as constant current source in ___.

Ohmic region Breakdown region Pinch off region All of the above

Which of the following is the common features between FETs and bipolars?

Difficult to bias Low voltage gain Low input impedance Current controlled devices

What is the full form of MOSFET?

metal–oxide–semiconductor field-effect transistor metal–oxygen–semiconductor field-effect transistor metal–oxide–semi field-effect transistor All of the above

Comparing the size of BJT and FET, choose the correct statement?

BJT is larger than the FET BJT is smaller than the FET Both are of same size Depends on application

For a FET when will maximum current flows?

Vgs = 0V Vgs = 0v and Vds >= |Vp| VDS >= |Vp| Vp = 0

The Shockley equation is __________________

ID = (1 – Vgs/Vp)2 ID = IDSS (1 – Vgs/Vp)2 ID = IDSS (1 – Vgs/Vp)1 ID = IDSS (1 + Vgs/Vp)2

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

A JFET has three terminals, namely …………

Cathode, Anode, Grid

Emitter, Base, Collector

Source, Gate, Drain

None of the above

A JFET is similar in operation to …………. valve

Diode

Pentode

Triode

Tetrode

A JFET is also called …………… transistor

Unipolar

Bipolar

Unijunction

None of the above

The gate of a JFET is ………… biased

Reverse

Forward

Reverse as well as forward

None of the above

A JFET is a ………… driven device

Current

Voltage

Both current and voltage

None of the above

The gate voltage in a JFET at which drain current becomes zero is called ___________ voltage

Saturation

Pinch-off

Active

Cut-off

The constant-current region of a JFET lies between

Cut off and Saturation

Cut off and Pinch-off

O and IDSS

Pinch-off and Breakdown

The output characteristics of a JFET closely resemble the output characteristics of a ___________ valve

Pentode

Tetrode

Triode

Diode

A MOSFET differs from a JFET mainly because ___________

Of power rating

The MOSFET has two gates

The JFET has a pn junction

None of the above

A JFET has high input impedance because ___________

It is made of semiconductor material

Input is reverse biased

Of impurity atoms

None of the above

What do you know about field-effect transistor (FET)?

A type of transistor which uses an electric field to control the flow of current

Voltage

Current

None of the above

The name field effect is related to the ____ layers of a JFET.

Depletion

Gate

Source

Drain

To use FET as a voltage controlled resistor, in which region it should operate?

Ohmic region

Cut off

Saturation

Cut off and Saturation

Quiz/Test Summary

Title: Field-Effect Transistors (FET)

Questions: 20

Contributed by:

Diego Tue, Mar 01, 2022 07:42 AM UTC

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