wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

20EE2001 - Class Test Revision 1

Total questions: 12

Worksheet time: 4mins

Name
Class
Date
1.

The Hall sensor in BLDC motor is placed after every _______

a)

120°

b)

90°

c)

180°

d)

360°

2.

The following diagram shows  most popular three-wheel electric vehicles is the

a)

Twike

b)

MES-DESSA

c)

Honda Insight

d)

GM’s ‘Hy-wire

3.

Normally a ___ quadrant electronic controller is used to control the motor.

a)

four

b)

three

c)

two

d)

single

4.

The mass of an electric vehicle has a ____ effect on the performance, range and cost of an electric vehicle

a)

critical

b)

low

c)

medium

d)

insignificant

5.

The rolling drag is independed of _____

a)

speed

b)

motor current

c)

torque

d)

motor voltage

6.

The concept of V/f control of inverters driving induction motors results in ____

a)

constant torque operation

b)

speed reversal

c)

reduced magnetic loss

d)

harmonic elimination

7.

The reluctance motor operates at a power factor of _____.

a)

0.8

b)

1

c)

0.9

d)

0.6

8.

Typical brushless motor doesn’t have Commutator

a)

True

b)

False

9.

During regenerative braking the motor operates as a transformer.

a)

True

b)

False

10.

If the vehicle brakes, this energy is converted to heat.

a)

True

b)

False

11.

The ratio of electric motor power to the sum of electric motor power and IC engine power is defined as

a)

degree of hybridization

b)

decrease of hybridization

c)

degree of hibernation

12.

Lithium polymer batteries are cheaper than Lithium-Ion batteries

a)

False

b)

True