Test: MOSFET


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20 Questions MCQ Test Power Electronics | Test: MOSFET

Test: MOSFET for Electronics and Communication Engineering (ECE) 2023 is part of Power Electronics preparation. The Test: MOSFET questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: MOSFET MCQs are made for Electronics and Communication Engineering (ECE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: MOSFET below.
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Test: MOSFET - Question 1

The MOSFET combines the areas of _______ & _________

Detailed Solution for Test: MOSFET - Question 1

 It is an enhancement of the FET devices (field effect) using MOS technology.

Test: MOSFET - Question 2

Which of the following terminals does not belong to the MOSFET?

Detailed Solution for Test: MOSFET - Question 2

MOSFET is a three terminal device D, G & S.

Test: MOSFET - Question 3

Choose the correct statement

Detailed Solution for Test: MOSFET - Question 3

It is a voltage controlled device.

Test: MOSFET - Question 4

Choose the correct statement(s)
i) The gate circuit impedance of MOSFET is higher than that of a BJT
ii) The gate circuit impedance of MOSFET is lower than that of a BJT
iii) The MOSFET has higher switching losses than that of a BJT
iv) The MOSFET has lower switching losses than that of a BJT

Detailed Solution for Test: MOSFET - Question 4

MOSFET requires gate signals with lower amplitude as compared to BJTs & has lower switching losses.

Test: MOSFET - Question 5

Choose the correct statement

Detailed Solution for Test: MOSFET - Question 5

MOSFET is a three terminal device, Gate, source & drain. It is voltage controlled unlike the BJT & only electron current flows.

Test: MOSFET - Question 6

The arrow on the symbol of MOSFET indicates

Detailed Solution for Test: MOSFET - Question 6

The arrow is to indicate the direction of electrons (opposite to the direction of conventional current flow).

Test: MOSFET - Question 7

The controlling parameter in MOSFET is

Detailed Solution for Test: MOSFET - Question 7

Correct Answer :- b

Explanation : The gate to source voltage is the controlling parameter in a MOSFET.

Test: MOSFET - Question 8

In the internal structure of a MOSFET, a parasitic BJT exists between the

Detailed Solution for Test: MOSFET - Question 8

Examine the internal structure of a MOSFET, notice the n-p-n structure between the drain & source. A p-channel MOSFET will have a p-n-p structure.

Test: MOSFET - Question 9

 In the transfer characteristics of a MOSFET, the threshold voltage is the measure of the

Detailed Solution for Test: MOSFET - Question 9

It is the minimum voltage to induce a n-channel/p-channel which will allow the device to conduct electrically through its length.

Test: MOSFET - Question 10

The output characteristics of a MOSFET, is a plot of

Detailed Solution for Test: MOSFET - Question 10

 It is Id vs Vds which are plotted for different values of Vgs (gate to source voltage).

Test: MOSFET - Question 11

In the output characteristics of a MOSFET with low values of Vds, the value of the on-state resistance is

Detailed Solution for Test: MOSFET - Question 11

 The o/p characteristics Is a plot of Id verses Vds, which for low values of Vds is almost constant. Hence, the on-state resistance is constant & the slop is its constant value.

Test: MOSFET - Question 12

At turn-on the initial delay or turn on delay is the time required for the

Detailed Solution for Test: MOSFET - Question 12

 It is the time required for the input capacitance to charge to the threshold value, which depends on the device configuration. The device can start conducting only after this time.

Test: MOSFET - Question 13

 Choose the correct statement

Detailed Solution for Test: MOSFET - Question 13

MOSFET has lower switching losses due to its unipolar nature & less turn off time. All of the other statements are false.

Test: MOSFET - Question 14

Which among the following devices is the most suited for high frequency applications?

Detailed Solution for Test: MOSFET - Question 14

MOSFET has the least switching losses among the rest of the devices.

Test: MOSFET - Question 15

Choose the correct statement

Detailed Solution for Test: MOSFET - Question 15

MOSFETs are voltage controlled devices. They have high gate circuit impedance and are PTC devices.

Test: MOSFET - Question 16

Consider an ideal MOSFET. If Vgs = 0V, then Id = ?

Detailed Solution for Test: MOSFET - Question 16

Gate current = 0 so device is off (ideally).

Test: MOSFET - Question 17

 For a MOSFET Vgs=3V, Idss=5A, and Id=2A. Find the pinch of voltage Vp

Detailed Solution for Test: MOSFET - Question 17

Use Id = Idd x [1-Vgs/Vp]2.

Test: MOSFET - Question 18

How does the MOSFET differ from the JFET?

Test: MOSFET - Question 19

The basic advantage of the CMOS technology is that

Detailed Solution for Test: MOSFET - Question 19

 Complementary MOS consumes very less power as compared to all the earlier devices.

Test: MOSFET - Question 20

The N-channel MOSFET is considered better than the P-channel MOSFET due to its

Detailed Solution for Test: MOSFET - Question 20

The N-channel are faster than the P-channel type.

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