Quiz 1 Unit 18- prepare for general electrical installation

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Quiz 1 Unit 18- prepare for general electrical installation

Q1 of 10 Score: 1

1. Basic protection is defined as

a. Protection against shock under fault conditions

b. Protection against shock under fault free conditions

c. Protection against contact with live parts under fault free conditions

d. Protection against faults under sound electrical conditions

Q2 of 10 Score: 1

What are two ways by which persons and livestock can receive electric shock

a. Direct and indirect contact

b. Thermal effects and vibration

c. Overload and over current

d. Location and separable of flammable materials

Q3 of 10 Score: 1

1. Protection against mechanical movement can be provided by

a. Fuse

b. Breaker

c. Limit switches and mechanical brakes

d. Earth rod

Q4 of 10 Score: 1

1. To provide protection against electric shock, the protective measure of double reinforced insulation relies on basic insulation and

a. Bonding

b. Connection of exposed metalwork to the protective conductor

c. Earthing in the fixed wiring of the installation

d. Supplementary insulation

Q5 of 10 Score: 1

What is the purpose of compliant protection arrangement

a. Provide enough spaces

b. Save a lot of money

c. Provide protection against overload and short circuit current

d. Daily demand

Q6 of 10 Score: 1

1. Which of the following will provide overload protection?

a. Linked switch

b. Residual current device

c. Disconnector

d. Circuit breaker

Q7 of 10 Score: 1

1. Why should electrical installations be divided into circuits?

a. Save money

b. Reduce time for wiring

c. Avoid danger and minimize inconvenience in the event of fault .

d. It makes installation bigger.

Q8 of 10 Score: 1

1. The number of circuits required in an installation is determined by

a. Size and nature of the installation, required current carrying capacity.

b. Location of the building, the number of people

c. Temperature and humidity

d. Vibration and water

Q9 of 10 Score: 1

1. Fault protection may be provided by

a. Barriers and enclosures to IPXXB or IP2X

b. Insulation of live parts

c. Protective earthing and protective equipotential bonding

d. Placing out of reach

Q10 of 10 Score: 1

1. Which of the following cannot be used as a basic protection?

a. Insulation of live parts

b. Barriers or enclosures

c. Protective earthing and bonding

d. Obstacle

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