EE-2 (3)

EE-2 (3)

University

21 Qs

quiz-placeholder

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EE-2 (3)

EE-2 (3)

Assessment

Quiz

Science

University

Hard

Created by

Venkat G

Used 4+ times

FREE Resource

21 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The sole purpose of a commutator in a dc generator is to

increase output voltage

reduce sparking at brushes

provide smoother output

convert the induced ac into dc

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The shaft torque in a DC motor is less than the total armature torque because of _____in the motor

copper losss

field loss

iron and friction losses

rotational

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The induced emf of armature conductors of a dc motor is

sinusoidal

trapezoidal

rectangular

none of the above

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A dc motor can be looked upon as dc generator with the power flow

reduced

reversed

increased

modified

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The commercial efficiency of a shunt generator is maximum when its variable loss equals ______ loss

constant

iron

friction and windage

none of the above

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The yoke of a DC machine is made up of _______

Silicon steel

soft iron

aluminium

cast steel

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The relationship between generated emf and applied voltage in case of dc generator is given as

Eg = V + IaRa

Eg = V – IaRa

Eg = V

none of these

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