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Test: Single Phase VSI - Electrical Engineering (EE) MCQ


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10 Questions MCQ Test Power Electronics - Test: Single Phase VSI

Test: Single Phase VSI for Electrical Engineering (EE) 2024 is part of Power Electronics preparation. The Test: Single Phase VSI questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Single Phase VSI MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Single Phase VSI below.
Solutions of Test: Single Phase VSI questions in English are available as part of our Power Electronics for Electrical Engineering (EE) & Test: Single Phase VSI solutions in Hindi for Power Electronics course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: Single Phase VSI | 10 questions in 30 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Power Electronics for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: Single Phase VSI - Question 1

Inverters converts

Detailed Solution for Test: Single Phase VSI - Question 1

Inverter is a dc to ac converter.

Test: Single Phase VSI - Question 2

In a VSI (Voltage source inverter)

Detailed Solution for Test: Single Phase VSI - Question 2

A VSI is the one in which the internal impedance of the source is negligible. It has a stiff DC source at its input.

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Test: Single Phase VSI - Question 3

VSIs using IGBTs are turned off by

Detailed Solution for Test: Single Phase VSI - Question 3

IGBT is a transistor family device. It can be turned off simply by removing the gate signal. All the transistor devices operated in the same way in inverters.

Test: Single Phase VSI - Question 4

Identify the circuit given below.

Detailed Solution for Test: Single Phase VSI - Question 4

It is a half-wave circuit as it has only 2 SCRs are connected. It is a half wave bridge type thyristorised inverter.

Test: Single Phase VSI - Question 5

What is the voltage across the R load when only T1 is conducting?

Detailed Solution for Test: Single Phase VSI - Question 5

Considering T1 as an ideal switch, the load is directly connected to the upper voltage source when T1 is on.

Test: Single Phase VSI - Question 6

Line-commutated inverters have

Detailed Solution for Test: Single Phase VSI - Question 6

Line-commuted inverters are actually phase-controlled converters operated in the inverting mode. They cannot act as standalone inverters as they require a AC supply. It is to be noted that “line commutated inverter” is not the conventional inverter. The conventional inverters are forced or load commutated inverters.

Test: Single Phase VSI - Question 7

VSIs using GTOs are turned off by

Detailed Solution for Test: Single Phase VSI - Question 7

GTOs are gate turn off SCRs in which turn-off is achieved by applying a negative gate pulse.

Test: Single Phase VSI - Question 8

__________ based inverters do not require self-commutation.

Detailed Solution for Test: Single Phase VSI - Question 8

All the devices can be turned off by their gate/base singles expect SCR. SCRs require external commutation circuits.

Test: Single Phase VSI - Question 9

Single phase half bridge inverters requires

Detailed Solution for Test: Single Phase VSI - Question 9

They require two voltage sources Vs/2 and Vs/2.

Test: Single Phase VSI - Question 10

In a single-phase half wave inverter ________ SCR(s) are/is gated at a time.

Detailed Solution for Test: Single Phase VSI - Question 10

Only one SCR is gated at a time, gating the both of them will short the supply.

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