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Pre Assesment - Design of Electrical Apparatus

Total questions: 10

Worksheet time: 8mins

Name
Class
Date
1.

Identify the Symbol of the machine

a)

Pole

b)

Yoke

c)

Armature

d)

Core

2.

Transformer is cooled using

a)

OIL

b)

AIR

c)

WATER

d)

All of the above

3.

This Type of Winding is

a)

Lap winding

b)

Wave winding

c)

None of the above

4.

Identify this element of DC motor

a)

Winding

b)

Commutator

c)

Slip ring

d)

Brushes

5.

Which type of motor is used in Ceiling Fans?

a)

DC motor

b)

Synchronous Motors

c)

Single Phase Induction Motor

d)

Stepper Motors

6.

Which motor is used inside a computer to eject the CD Disk?

a)

Synchronous motors

b)

Stepper Motors

c)

DC motors

d)

Induction Motors

7.

This is a Shell Type Transformer

a)

True

b)

False

8.

This is the circuit diagram of

a)

DC Series motor

b)

Induction motor

c)

DC Shunt motor

d)

DC Compound motor

9.

 E = 4.44 F ϕ T  voltsE\ =\ 4.44\ F\ \phi\ T\ \ volts  This is the equation of  (Choose multiple answers)

a)

Output equation of induction motor

b)

Induced emf per phase in single phase transformer

c)

Induced emf in phase in three phase transformer

d)

output equation of DC motor

10.

Speed of a synchronous motor is (Choose multiple answers)

a)

Directly proportional to the Frequency

b)

Indirectly proportional to the Frequency

c)

Indirectly proportional to the number of Poles

d)

Directly proportional to the number of Poles