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Power Electronics Quiz1

Total questions: 15

Worksheet time: 4mins

Name
Class
Date
1.

Name the terminals of an IGBT

a)

Collector, emitter and gate

b)

Collector, base and gate

c)

Collector, base and emitter

2.

Identify the power electronics device that supports bidirectional current flow.

a)

TRIAC

b)

Thyristor

c)

Power MOSFET

d)

Power BJT

3.

The device most suited for high switching frequency operation is _______.

a)

Power MOSFET

b)

Power BJT

c)

Thyristor

d)

IGBT

4.

A cycloconverter is also termed as (a)   converter.

5.

____________ commutation is used in AC/DC converters and AC/AC converters

a)

Natural

b)

Forced

c)

Neutral

6.

________ is used in converters to remove the negative voltage in the output and also to maintain load     current continuous.

a)

Freewheeling diode

b)

Snubber circuit

c)

Crowbar protection

d)

reactive filter

7.

A matrix converter directly converts ______ without an intermediate DC stage.

a)

AC to AC

b)

AC to DC

c)

DC to AC

d)

DC to DC

8.

Vo = Vs / (1-α), is the expression for the average output voltage of a ___________.

a)

step-up chopper

b)

step-downchopper

c)

inverter

d)

cycloconverter

9.

In a single-phase fully controlled bridge converter, the converter attains the inverter mode operation when the firing angle goes beyond ____.

a)

90˚.

b)

30˚.

c)

60˚.

d)

180˚.

10.

Identify the terminals of TRIAC ​

a)

MT1, MT2, Gate

b)

Anode, Cathode, Gate

c)

Collector, Cathode, Gate

11.

_______ is used in converters to remove the negative voltage in the output and to maintain load current continuous.

a)

Free Wheeling Diode

b)

Snubber Circuit

c)

Crowbar Protection

12.

Forced type of commutation is used in Inverters.

a)
True
b)
False
13.

DC Chopper circuits uses natural commutation

a)
True
b)
False
14.

An Inverter Circuit converters Fixed DC to Variable AC.

a)
True
b)
False
15.

Identify the essential converters used in the both terminals of a HVDC transmission.

a)

Rectifiers and Inverters

b)

Choppers and Inverters

c)

Rectifiers and Choppers