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Practice test for unit 202

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Unit 202: Electrical principles and processes for building

Unit 202: Electrical principles and processes for building

Question 1 of 20 Question 1 of 20

1

When carrying out a continuity test would you expect:

Select one of the following:

  • b. No reading at all

  • d. A very low reading.

  • c. A variable reading

  • a. A very high reading

Explanation

Question 2 of 20 Question 2 of 20

1

A fault in an electric circuit can be caused by:

Select one of the following:

  • a. Low load

  • c. Over load

  • b. Heavy load

  • d. Limited load.

Explanation

Question 3 of 20 Question 3 of 20

1

Test probes on a multimeter must have a maximum exposed tip of:

Select one of the following:

  • a. 1mm

  • d. 4mm.

  • c. 3mm

  • b. 2mm

Explanation

Question 4 of 20 Question 4 of 20

1

When working on a system that has had a section of pipework removed, which of
the following should be used?

Select one of the following:

  • a. Permanent polarity bonding

  • b. Permanent earth continuity bonding

  • c. Temporary polarity bonding

  • d. Temporary earth continuity bonding.

Explanation

Question 5 of 20 Question 5 of 20

1

A radiator fitted near to a shower in a bathroom could require:

Select one of the following:

  • d. Additional bonding.

  • c. Minor bonding

  • a. Supplementary bonding

  • b. Main bonding

Explanation

Question 6 of 20 Question 6 of 20

1

Where is an MCB fitted?

Select one of the following:

  • b. Outside socket

  • c. Extension lead

  • a. Consumer unit

  • d. Electric shower.

Explanation

Question 7 of 20 Question 7 of 20

1

The design, installation and testing of electrical systems is covered by:

Select one of the following:

  • a. BS6700

  • b. BS1212

  • d. BS7176.

  • c. BS7671

Explanation

Question 8 of 20 Question 8 of 20

1

The neutral conductor in fixed-cable installations is identified by the insulation
being coloured:

Select one of the following:

  • c. Blue

  • a. Red

  • b. Green/yellow

  • d. Brown

Explanation

Question 9 of 20 Question 9 of 20

1

The relationship between current, resistance and voltage is stated in:

Select one of the following:

  • a. Boyle’s law

  • d. BS7671.

  • b. Ohm’s law

  • c. Charge’s law

Explanation

Question 10 of 20 Question 10 of 20

1

The type of electricity derived from a battery is:

Select one of the following:

  • b. Alternating current

  • a. Alternating wattage

  • c. Direct wattage

  • d. Direct current.

Explanation

Question 11 of 20 Question 11 of 20

1

Calculate the fuse rating for a 690w, 230v AC central heating pump.

Select one of the following:

  • a. 13 amp

  • c. 3 amp

  • b. 5 amp

  • d. 1 amp.

Explanation

Question 12 of 20 Question 12 of 20

1

What is this?

Select one of the following:

  • a. Insulation resistance tester

  • b. Digital manometer

  • c. Residual current device tester

  • d. Approved voltage tester.

Explanation

Question 13 of 20 Question 13 of 20

1

A domestic consumer unit should be installed:

Select one of the following:

  • b. Immediately before the supplier’s sealed fuse unit

  • d. Immediately after the supplier’s meter.

  • c. On each ring circuit

  • a. Only where there is three phase supply

Explanation

Question 14 of 20 Question 14 of 20

1

What is this?

Select one of the following:

  • c. Single pole rocker plate pull switch

  • d. Wiring centre pull cord.

  • a. Illuminated fused spur

  • b. Double pole pull cord switch

Explanation

Question 15 of 20 Question 15 of 20

1

Which one of the following appliances should have its own separate connection
to the consumer unit?

Select one of the following:

  • c. Free-standing fan heater

  • a. Immersion heater

  • b. Bathroom light

  • d. Gas boiler.

Explanation

Question 16 of 20 Question 16 of 20

1

A boiler, with a rating of 690watt, 230v, 50Hz has been fitted with a 13 amp fuse.
Would you:

Select one of the following:

  • d. Warn customer not to touch it.

  • a. Leave it as it is

  • b. Change it for a 3 amp fuse

  • c. Fit a 16 amp MCB to protect it

Explanation

Question 17 of 20 Question 17 of 20

1

What is this component?

Select one of the following:

  • d. 2 gang surface mounted box.

  • b. 1 gang counter sunk box

  • a. 1 gang surface mounted box

  • c. 2 gang counter sunk box

Explanation

Question 18 of 20 Question 18 of 20

1

Which one of the following could be interrupted by a disconnection of 400v
three-phase supply?

Select one of the following:

  • a. Heating of domestic hot water via immersion

  • c. Industrial process

  • d. Domestic ring main.

  • b. Domestic lighting

Explanation

Question 19 of 20 Question 19 of 20

1

The normal voltage for a domestic property is:

Select one of the following:

  • c. 230v single phase AC

  • d. 110v single phase AC.

  • a. 415v three phase AC

  • b. 240v single phase DC

Explanation

Question 20 of 20 Question 20 of 20

1

The flow of electricity through both the live and neutral conductor can be turned
off by using:

Select one of the following:

  • b. Single pole switch

  • a. Double pole switch

  • d. Ring circuit.

  • c. MCB

Explanation

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