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CFV30122 - Theory Test

Total questions: 50

Worksheet time: 50mins

Name
Class
Date
1.

What function we used goggle?

a)

Close the eyes

b)

Block the face

c)

Block the noose

d)

Close up all the face

2.

Artificial respiration is the act of simulating __________.

a)

respect

b)

respiration

c)

responsible

d)

respitationality

3.

Rescue breathing should continue at a normal breathing pace of about___________________

a)

2 times per minute

b)

5 times per minute

c)

10 times per minute

d)

12 times per minute

4.

What the name for CPR ?

a)

Car Pulmonari Rescuciation.

b)

Cardiac Pulnari Rescuciation.

c)

Cardiac Pulmonari Resciation.

d)

Cardiac Pulmonari Rescuciation.

5.

Which current ampere can make the people can be injured?

a)

50 mA

b)

10 mA

c)

1 mA

d)

0.5 mA

6.

What can be used to control the flow of electricity?

a)

Key

b)

Switch

c)

Handle

d)

Stereng

7.

The main use Enamelled copper wire is

a)

Make a simple circuit wiring

b)

Making a coil on an electric motor

c)

Making a home electrical circuit wiring

d)

Making radio wiring and electronic components

8.

The best types of wire used to make the wiring on the plug 3 pin 13 A is

a)

Three-core wire

b)

Single core wire

c)

Twin core wire

d)

Single strand wire

9.

All statements under the fuse is one exception

a)

Fuses are only available in 3-pin plug 15A

b)

Fuses used to switch electrical appliances

c)

Fuses are used to protect circuits and electrical appliances

d)

Fuse will continue to function even excessive electric current through it

10.

A transformer has 100 turns in primary winding and 20 turns in secondary winding, primary voltage is 240V. Calculate the secondary voltage value?

a)

48 mV

b)

4.8 V

c)

48 V

d)

4.8 kV

11.

From question 7 calculation, the transformer is a _________.

a)

Step up transformer.

b)

No step transformer

c)

Isolation transformer

d)

Step down transformer.

12.

What is a general function of a transformer?

a)

Step up a voltage

b)

Step down a voltage.

c)

Step up or down a voltage

d)

Step down a current quantity.

13.

Which connection of a transformer is connected to a load?

a)

Casing

b)

Ground terminal

c)

Primary winding

d)

Secondary winding

14.

A transformer consist a coil called _________.

a)

Winding.

b)

Small coil.

c)

Large coil.

d)

Transparent coil

15.

A basic transformer is an electrical device constructed of _____ coils.

a)

2

b)

3

c)

4

d)

5

16.

Which is not true of types core materials for the transformer?

a)

Air core

b)

Iron core.

c)

Steel core.

d)

Ferrite core.

17.

Which connection of transformer is connected to a supply voltage?

a)

Casing.

b)

Primary winding.

c)

Ground terminal.

d)

Secondary winding.

18.

Calculate the secondary current. When Npri = 200 , Nsec = 400 and Ipri = 2A.

a)

1 mA

b)

4 mA

c)

1 A

d)

4 A

19.

Dc motor convert__________________ into _________________ energy

a)

Kimia – Electrical

b)

Kimia – Mechanical

c)

Electrical – Mechanical

d)

Mechanical - Electrical

20.

Which is not in the type of DC motor?

a)

Shunt motor

b)

Series motor

c)

Compound motor

d)

Shaded pole motor

21.

Question number 21, refer figure 1.


Refer to figure 1, what is a type of DC motor?

a)

Shunt motor.

b)

Split phase motor

c)

Compound motor

d)

Shaded pole motor

22.

The device that converts electrical energy into mechanical energy is____

a)

Motor

b)

Generator

c)

Stepper Motor

d)

AC and DC Machine.

23.

This magnetic field induces a _________ in the rotor and it begins to rotate.

a)

Voltage

b)

Current

c)

Frequency

d)

Resistance

24.

The most important factors will consider for shaded pole motors are ________.

a)

Cost and size

b)

Size and horsepower

c)

Low cost and maintenance

d)

Winding and construction

25.

A Split Phase Motor is generally operated on ______ volts.

a)

115

b)

120

c)

150

d)

240

26.

Choose the correct statement about the Universal Motor ?

a)

DC series Motor connected to Shunt Motor.

b)

DC Shunt Motor connected to a Series Motor.

c)

DC Shunt Motor connected to both AC and DC.

d)

DC Series Motor connected to both AC and DC

27.

Which of the following is not classified as an Capacitor Motor ?

a)

Synchronous Motor

b)

Capacitor Start Motor

c)

Two Value Capacitor Motor

d)

Permanent Split Capacitor Motor

28.

Compound motor commonly employed for __________.


I. Elevator

II. Vacuum

III. Electrical equipment

IV. Air compressor

a)

I only

b)

I, II only

c)

I, IV only

d)

I, II, III only

29.

The most important factors will consider for shaded pole motors are ________.

a)

Cost and size

b)

Size and horsepower

c)

Winding and construction

d)

Low cost and maintenance

30.

All of a devices is used a split phase motor except

a)

Refrigerator

b)

Water pump

c)

Vacuum cleaner

d)

Washing machine

31.

The split phase motor has two field windings. What are the names of field winding?

a)

Starting winding & primary winding

b)

Running winding & starting winding

c)

Stopping winding & running winding

d)

Primary winding & secondary winding

32.

Which is the generally ranges size horsepower for split phase motor ________.

a)

¼ to ½ horsepower

b)

½ to 1 horsepower

c)

1/20 to ½ horsepower

d)

1/20 to ¼ horsepower

33.

Speed of rotation of the output shaft is measured in ______________ .

a)

m/s

b)

RPM

c)

Km/h

d)

Mile nautical

34.

Which is not in the types of speed motor control

a)

Fan KDK model

b)

Floor – Type Fans

c)

Wall and Desk Fan

d)

Fan for unit Heaters

35.

Servo motors may be made from several motor types, the most common being except _________.

a)

Driven machine

b)

Ac servo motors

c)

Brushed DC motor

d)

Brushless DC motor

36.

The speed for shunt motor can be control by using a ________.

a)

SCR

b)

Rheostat

c)

Transistor

d)

Capacitor

37.

All of a devices is used a split phase motor except _________.

a)

Blower

b)

Refrigerator

c)

Water pump

d)

Washing machine

38.

The starting winding also known as ________.

a)

Main winding

b)

Primary winding

c)

Auxiliary winding

d)

Secondary winding

39.

The suited method to control speed for shaded pole motor by _________.

a)

Using rheostat.

b)

Variation of frequency.

c)

Variation of resistance.

d)

Variation of applied voltage.

40.

The starting winding also known as ________.

a)

Main winding

b)

Primary winding

c)

Auxiliary winding

d)

Secondary winding

41.

Three Speed that is use in Split Phase Motor except _________.

a)

one run winding

b)

one start winding

c)

one auxiliary winding

d)

one start auxiliary winding

42.

________________use position feedback to close the control loop

a)

Servo controllers

b)

SCR or thyristor drive

c)

Brushed DC motor speed or torque controls

d)

Pulse width modulation(PWM) or Chopper Drives

43.

An electrical ___________________consists of an electric motor and a speed controller or power converter plus auxiliary devices and equipment

a)

thyristor drive

b)

chopper drives

c)

motor control center

d)

adjustable-speed drive

44.

The rotor speed of a DC motor depends upon the __________applied across the motor; the higher the voltage across the motor leads, the higher the rotor speed.

a)

Current

b)

Voltage

c)

Resistor

d)

Capacitor

45.

The _______________ will control whether the motor is on or off, and will control the motor speed.

a)

Potentiometer

b)

Rheostat

c)

Switch

d)

Lamp

46.

How the three phase winding are a part of each location ?

a)

90 0 a part of each phase.

b)

120 0 a part of each phase.

c)

180 0 a part of each phase

d)

270 0 a part of each phase.

47.

The transformer is part of a laboratory power supply and has 50 turns in the primary and 10 turns in the secondary. What is the secondary voltage is

Vs = 120 Vrms?

a)

2.4 V

b)

24 V

c)

240 V

d)

2400 V

48.

If the size of the cable were given 7 / 1.04 mm and change the size of the area cross section. What is area?

a)

2 mm2

b)

4 mm2

c)

6 mm2

d)

8 mm2

49.

The speed of a dc series motor

a)

Increase with an increase in load

b)

Decrease with an increase in applied voltage

c)

Decreased with increase in load

d)

Decrease with decrease in load

50.

The DC compound motor is suitable for


I Crane

II Milling machine

III Compressors

IV Crushers

a)

I and II

b)

I, II and III

c)

III and IV

d)

IV only