T2 Part 3

Question 1

IS/EN 60309 plugs and socked outlets rated for 230 Volts are coloured :

Answer 1

Blue

Question 2

The minimum level of IP protection on all fittings where water hosing is
used in a farm location is :

Answer 2

IP45

Question 3

A material that can be permanently magnetised is said to be :

Answer 3

Ferromagnetic

Question 4

When an inductive load is connected to an AC supply, :

Answer 4

The current lags the
voltage

Question 5

In a building with a three phase four wire supply, single phase loads are
got by :

Answer 5

Using any one phase and neutral

Question 6

With reference to fuses the letters HRC mean :

Answer 6

High rupturing capacity.

Question 7

The white light coming from a fluorescent tube is caused by:

Answer 7

The coating of
powder inside the tube.

Question 8

One purpose of the ballast or choke in a low pressure mercury lamp is to:

Answer 8

Limit the current.

Question 9

Cable tray is used to :

Answer 9

To provide runs for sheathed cables

Question 10

Which of the following is not always an advantage of SWA cables? :

Answer 10

Armour can be used as an earth.

Question 11

5. Volt drop may be reduced in a cable by:

Answer 11

Reducing the length and
increasing the CSA

Question 12

What do you use to convert D.C to use A.C :

Answer 12

An Inverter

Question 13

Single phase 230 Volt a.c. supplies are taken from a :

Answer 13

400v three phase,
four-wire system

Question 14

Which socket arrangement is suitable in an Agricultural or Horticultural
premises :

Answer 14

EN 60309 sockets mounted at least 0.45 mts above floor level