IE important question

IE important question

12th Grade

75 Qs

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IE important question

IE important question

Assessment

Quiz

Physics

12th Grade

Practice Problem

Hard

Created by

Lavanya R

Used 1+ times

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75 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

For an SCR, di/dt protection is achieved through the use of (required)

R in series with SCR (required in all cases except open-ended & draw questions)
L in series with SCR (required in all cases except open-ended & draw questions)
RL in series with SCR (optional)
RLC in series with SCR (optional)

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

In which mode of operation, Self commutation can achieved?

180
120
360
270

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Among the following which component is best suitable for inverter application

SCR
BJT
MOSFET
IGBT

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which power electronics switch can be the best for boost converter?

SCR
MOSFET
Mechanical Switch
TRAIC

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the voltage equation of step up / down chopper with α as the duty cycle and Vs as the dc input voltage is

Vs / (1 – α)
α x Vs
Vs * α / (1-α)
Vs * α/ (1+α)

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What will be the output voltage for a Buck-Boost Converter, if α = 0.5

Vo = Vs
Vo < Vs
Vo > Vs
Data insufficient

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Find the output voltage expression for a boost converter with Vs as the input voltage and α as the duty cycle.

Vo = Vs/α
Vo = Vs x α
Vo = Vs/(1-α)
Vo = 2Vs/απ

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