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Power Electronics MCQs: 272 Questions & Answers in Engineering

272 Power Electronics MCQs in Engineering with answers & explanations. Page 11. Practice objective questions for competitive exams, interviews & self-assessm… Use the answer toggle below to show or hide all solutions, tap an option to check one question, or open a question for its own page.

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Power Electronics MCQs: 272 Questions & Answers in Engineering

Practical way of obtaining static voltage equalization in series connected SCRs is by the use of:

A resistor connected across the gate and cathode of an SCR in a circuit increases its

In thyristor, holding current is:

A thyristor can be termed as:

When a thyristor turn on, the gate drive:

During forward blocking state, a thyristor is associated with:

Turn-off time of an SCR is measured from the instant:

A forward voltage can be applied to an SCR after its:

In a thyristor, the magnitude of the anode current will:

In a thyristor, ratio of latching current to holding current is:

Once SCR starts conducting a forward current, its gate losses control over:

On state voltage drop across thyristor used in a 230 V supply system is of the order:

Silicon controlled rectifier can be turned on

TRIAC is a semiconductor power electronic device which contains

An SCR can be used

A crowbar is a circuit which is used to protect a

The advantage of using free – wheeling diode in half controlled bridge converter is that

Harmonics in 3 phase inverters can be reduced by using

The most suited gate pulses given to the AC regulator with R – L load can be in the form of

With increase in firing angle,

Study tips for Power Electronics