Question 1

The connection of the exposed conductive parts of an installation to the main protective earthing terminal of the installation is one definition of:

Accepted Answer

A)   earthing
B)   protective equipotential bonding
C)   overload
D)   short circuit. A

Question 2

An electrical cable is made up of three parts which are:

Accepted Answer

A)   conduction, convection and radiation
B)   conductor, insulation and outer sheath
C)   heating, magnetic and chemical
D)   conductors and insulators. B

Question 3

The protection provided by insulating live parts is called:

Accepted Answer

A)   extraneous conductive parts
B)   basic protection
C)   exposed conductive parts
D)   fault protection. B

Question 4

The conduit and trunking parts of the electrical installation are:

Accepted Answer

A)   earth conductors
B)   bonding conductors
C)   exposed conductive parts
D)   extraneous conductive parts.

Question 5

A PVC insulated and sheathed wiring system would be suitable for the following type of installation:

Accepted Answer

A)   commercial
B)   domestic
C)   horticultural
D)   industrial.

Question 6

Electricity is distributed from the local substations by underground cables at:

Accepted Answer

A)   230 V
B)   400 V
C)   25 kV
D)   132 kV.

Question 7

A steel trunking installation would be suitable for the following type of installation:

Accepted Answer

A)   commercial
B)   domestic
C)   horticultural
D)   industrial.

Question 8

Which of the following fixing methods would be suitable for securing a heavy electric motor to a concrete bed?

Accepted Answer

A)   cable clip
B)   Rawlbolt
C)   screw fixing to plastic plug
D)   spring toggle.

Question 9

An appropriate wiring system for a three-phase industrial installation would be:

Accepted Answer

A)   PVC cables
B)   PVC conduit
C)   one which meets the requirements of Part 2 of the IET Regulations
D)   one which meets the requirements of Part 5 of the IET Regulations

Question 10

An appropriate wiring method for an underground feed to a remote building would be a:

Accepted Answer

A)   metal conduit installation
B)   trunking and tray installation
C)   PVC cables
D)   PVC/SWA cables

Question 11

A diagram which shows the detailed connections between individual items of equipment is a description of a:

Accepted Answer

A)   block diagram
B)   site plan or layout diagram
C)   wiring diagram
D)   circuit diagram.

Question 12

A protective conductor connecting exposed and extraneous parts together is one definition of:

Accepted Answer

A)   earth
B)   earthing
C)   bonding conductor
D)   circuit protective conductor.

Question 13

A PVC conduit installation would be suitable for the following type of installation:

Accepted Answer

A)   commercial
B)   domestic
C)   horticultural
D)   industrial.

Question 14

The cables suspended from the transmission towers of the National Grid network are made from:

Accepted Answer

A)   copper and brass
B)   copper with PVC insulation
C)   aluminium and steel
D)   aluminium and porcelain.

Question 15

Transmission of electricity on the National Grid network takes place at:

Accepted Answer

A)   230 V
B)   400 V
C)   25 kV
D)   132 kV.

Question 16

The act of connecting the exposed conductive parts of the installation to the main earthing terminal of the installation is called:

Accepted Answer

A)   earth
B)   earthing
C)   bonding conductor
D)   circuit protective conductor.

Question 17

The weakest link in the circuit designed to melt when an over-current flows is one definition of:

Accepted Answer

A)   fault protection
B)   a circuit protective conductor
C)   a fuse
D)   a consumer unit.

Question 18

The phase current of a delta-connected load is 100 A. The line current will be:

Accepted Answer

A)   57.73 A
B)   101 A
C)   173.2 A
D)   231 A.

Question 19

Which of the following fixing methods would be suitable for holding a medium-weight load onto a brick wall?

Accepted Answer

A)   cable clip
B)   Rawlbolt
C)   screw fixing to plastic plug
D)   spring toggle.

Question 20

A steel conduit installation would be suitable for the following type of installation:

Accepted Answer

A)   commercial
B)   domestic
C)   horticultural
D)   industrial.

Exam 3: Principles of Electrical Science

The connection of the exposed conductive parts of an installation to the main protective earthing terminal of the installation is one definition of:

An electrical cable is made up of three parts which are:

The protection provided by insulating live parts is called:

The conduit and trunking parts of the electrical installation are:

A PVC insulated and sheathed wiring system would be suitable for the following type of installation:

Electricity is distributed from the local substations by underground cables at:

A steel trunking installation would be suitable for the following type of installation:

Which of the following fixing methods would be suitable for securing a heavy electric motor to a concrete bed?

An appropriate wiring system for a three-phase industrial installation would be:

An appropriate wiring method for an underground feed to a remote building would be a:

A diagram which shows the detailed connections between individual items of equipment is a description of a:

A protective conductor connecting exposed and extraneous parts together is one definition of:

A PVC conduit installation would be suitable for the following type of installation:

The cables suspended from the transmission towers of the National Grid network are made from:

Transmission of electricity on the National Grid network takes place at:

The act of connecting the exposed conductive parts of the installation to the main earthing terminal of the installation is called:

The weakest link in the circuit designed to melt when an over-current flows is one definition of:

The phase current of a delta-connected load is 100 A. The line current will be:

Which of the following fixing methods would be suitable for holding a medium-weight load onto a brick wall?

A steel conduit installation would be suitable for the following type of installation: