Inspection & Testing 1

Inspection & Testing 1

Professional Development

27 Qs

quiz-placeholder

Similar activities

Unit 107

Unit 107

Professional Development

31 Qs

EMA Revision A

EMA Revision A

Professional Development

30 Qs

Electrician 3rd Sem Module 3 AC Three Phase Motor 31-60

Electrician 3rd Sem Module 3 AC Three Phase Motor 31-60

Professional Development

30 Qs

Chapter 19: Basic Construction

Chapter 19: Basic Construction

Professional Development

25 Qs

Types of Sprinklers: SSP/SSU/Upright

Types of Sprinklers: SSP/SSU/Upright

Professional Development

25 Qs

6035 Hot Water Exam Test

6035 Hot Water Exam Test

Professional Development

24 Qs

Tools

Tools

Professional Development

23 Qs

Electrical Science Revision 11th December

Electrical Science Revision 11th December

Professional Development

25 Qs

Inspection & Testing 1

Inspection & Testing 1

Assessment

Quiz

Professional Development

Professional Development

Medium

Created by

Sayed Habib

Used 1+ times

FREE Resource

27 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An insulation resistance test is carried out on a circuit in 2.5/1.5 mm² cable, supplying a heater. If the value of insulation resistance between live conductors is 300 MΩ, the expected value between live and earth would be

a) 100 MΩ

b) 300 MΩ

c) 500 MΩ

d) 1000 MΩ

Answer explanation

The expected value between live and earth is typically one-third of the insulation resistance between live conductors, so it would be 100 MΩ (300 MΩ / 3 = 100 MΩ). Therefore, the correct choice is a) 100 MΩ.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the length of a cable is doubled the insulation resistance will

a) Be doubled

b) Remain the same

c) Be halved

d) Be quartered

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following tests is carried out to conform that all accessories are correctly connected?

a) Polarity

b) RCD function

c) Phase sequence

d) Additional Protection

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The continuity of circuit protective conductors should be verified and recorded using

a) A continuity tester

b) A high resistance ohmmeter

c) An earth fault impedance tester

d) A low resistance ohmmeter

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A test of insulation resistance on a number of circuits produces the following results: 10 MΩ, 5 MΩ, 4 MΩ and 2 MΩ. The insulation resistance measured at the distribution board, with all the circuits connected in parallel will be

a) 26 MΩ

b) 10 MΩ

c) 5.2 MΩ

d) 0.8 MΩ

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The measurement of conductor resistance would not be affected by the

a) Thickness of conductor insulation

b) Conductor temperature

c) Conductor csa

d) Conductor length

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following, for reason of safety, should be verify prior to conducting test of an RCD using an RCD test instrument?

a) Suitably low earth fault loop impedance

b) Suitable insulation resistance values

c) The operation of the RCD integral test button

d) The prospective fault current at the point where the RCD is fitted

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?