Free Printable 8202-20 June 2018

1.

What is an organisational responsibility with regards to PPE?

a)

Must be worn at all times.

b)

Any defects must be reported.

c)

Training and information on its use must be provided.

d)

Must be used in accordance with any training provided.

2.

What regulation does the symbol, in Figure 1, apply to?

a)

WEEE.

b)

EAWR.

c)

Control of Noise Regulations.

d)

The Pollution Prevention and Control Act.

3.

What document sets out a systematic approach for a set task?

a)

Permit to work.

b)

Method statement.

c)

Risk assessment.

d)

Job sheet.

4.

What is the immediate action that must be taken upon discovering a colleague being exposed to an electric shock?

a)

Pull the casualty away.

b)

Call for medical assistance.

c)

Switch off the main supply.

d)

Assess the situation.

5.

Which personnel is concerned with the design and physical integrity of buildings and other large structures?

a)

Site Manager.

b)

Safety Officer.

c)

Structural Engineer.

d)

Site Supervisor.

6.

What job role entails checking the quality of materials and installation meets the client's requirements?

a)

Clerk of Works.

b)

Project Manager.

c)

Contracts Manager.

d)

Quantity Surveyor.

7.

What value is required to determine circuit power where only the circuit resistance is known?

a)

I²

b)

Z_s

c)

E

d)

L

8.

What value represents 1 MΩ?

a)

1 x 10⁻⁶ Ω

b)

1 x 10⁻³ Ω

c)

1 x 10³ Ω

d)

1 x 10⁶ Ω

9.

According to Ohms Law, which is the correct formula?

a)

R = V x I

b)

R = √(V² + I)

c)

R = I / V

d)

R = V / I

10.

What is the sum of all the angles in a right angle triangle?

a)

60.

b)

90.

c)

180.

d)

360.

11.

What is the value of angle A shown in Figure 2?

Opposite side = 21

Hypotenuse = 35

a)

30.96

b)

36.87

c)

50.31

d)

53.13

12.

What part of the atom is negatively charged?

a)

Proton

b)

Nucleus

c)

Electron

d)

Neutron

13.

What material is used as an insulator?

a)

Tungsten

b)

Porcelain

c)

Mercury

d)

Carbon

14.

Which insulator is Hygroscopic?

a)

Mica

b)

Bakalite

c)

Polyvinyl Chloride

d)

Magnesium Oxide

15.

How much power is dissipated by a 25 Ω resistor when 4 A flows through it?

a)

0.4 W

b)

40 W

c)

0.4 kW

d)

40 kW

16.

What calculation would be used to calculate total resistance in a series circuit?

a)

R1 + R2 + R3

b)

1/R1 + 1/R2 + 1/R3

c)

1/(1/R1 + 1/R2 + 1/R3)

d)

R1 x R2 x R3

17.

What is the length of a 2.5 mm² copper conductor having a resistance of 0.207 Ω at 20 °C? The resistivity of copper is 0.0172 μΩ·m.

a)

20m

b)

30m

c)

40m

d)

50m

18.

Three resistors of 12 Ω, 6 Ω and 4 Ω are connected in parallel. What is the total circuit resistance?

a)

0.5 Ω

b)

2 Ω

c)

22 Ω

d)

288 Ω

19.

What is the total current for the circuit in Figure 3?

a)

3.83 A

b)

1.51 A

c)

0.66 A

d)

0.25 A

20.

What two values does a wattmeter measure?

a)

Voltage and resistance.

b)

Capacitance and resistance.

c)

Voltage and current.

d)

Current and capacitance.

21.

What is the unit of measure for magnetic flux?

a)

Weber.

b)

Henrys.

c)

Kelvin.

d)

Hertz.

22.

What is the flux density when a conductor of effective length 0.25 m is moving at right angles through a magnetic field at a velocity of 5 m/s and is generating 1.375 V?

a)

1.1 T

b)

2.1 T

c)

3.375 T

d)

6.625 T

23.

What is the output voltage of a transformer that is rated at 150 kVA and delivers 375 A at full load?

a)

56 kV

b)

525 V

c)

400 V

d)

225 V

24.

How many primary turns will a 200 kVA, 3.3 kV/240 V 50 Hz single-phase transformer have, when there are 80 turns on the secondary winding?

a)

1100 turns.

b)

833 turns.

c)

60 turns.

d)

3 turns.

25.

What is Fleming's formula for calculating force?

a)

F = B + I + L

b)

F = B / I − L

c)

F = B / (I × L)

d)

F = B × I × L

26.

What is the unit of measurement for inductance?

a)

Ohms.

b)

Henrys.

c)

Farads.

d)

Siemens.

27.

What is the operating principle of a double-wound transformer?

a)

Self-induction.

b)

Shared-induction.

c)

Mutual induction.

d)

Opposed induction.

28.

What is the RMS voltage of a sine wave having a peak value of 90 V?

a)

127.3 V

b)

102.69 V

c)

78.89 V

d)

63.63 V

29.

What passive component is used to reduce current in an electronic circuit?

a)

Resistor.

b)

Thyristor.

c)

Transistor.

d)

Amplifier.

30.

What must be performed before using the equipment shown in Figure 4, on site?

a)

Earth leakage test.

b)

GS 38 checks.

c)

User checks.

d)

Earth bond test.

31.

What is the minimum distance required, from the top of a floor joist, for a hole used to pass cables through?

a)

50 mm

b)

60 mm

c)

70 mm

d)

80 mm

32.

What is the most suitable cable for a fire alarm sounder installation?

a)

Cat 5

b)

Fibre optic

c)

Cat 6

d)

MIMS

33.

What is the item shown in Figure 5 used for?

a)

Drawing in

b)

Dressing in

c)

Filling in

d)

Forming in

34.

What type of conduit set is shown in Figure 6?

a)

Double set

b)

Bubble set

c)

180 bend

d)

Kick

35.

What type of cable would be supported by the item shown in Figure 7?

a)

PVC SWA

b)

MICC

c)

SY Flex

d)

Twin and cpc

36.

What is the minimum height that cables must be installed at, on a catenary system above a walkway?

a)

2.5 m

b)

3 m

c)

3.5 m

d)

4 m

37.

What External Influence within BS 7671 would affect the selection of a containment system?

a)

Capacity

b)

Utilisation

c)

Suitability

d)

Affordability

38.

What support system would be most suitable for running a large SWA up a building electrical riser?

a)

Trunking

b)

Basket

c)

Ladder

d)

Conduit

39.

What factor will affect the minimum permissible csa of a cable?

a)

Cost

b)

Load

c)

Aesthetics

d)

Practicality

40.

What is the nominal voltage (AC) indicated by a red BS EN 60309 socket?

a)

400 V

b)

230 V

c)

110 V

d)

50 V

41.

What termination method is used to connect a conductor to a large busbar system?

a)

Solder

b)

Crimp

c)

Welded

d)

Brazed

42.

What is a transmission voltage?

a)

11 kV

b)

25 kV

c)

33 kV

d)

400 kV

43.

Who is responsible for the electrical meter in a domestic installation?

a)

The owner

b)

The electrician

c)

The energy supplier

d)

The occupant

44.

What device provides Additional Protection against electric shock?

a)

RCD

b)

MCB

c)

BS 88 Fuse

d)

BS 3036 Fuse

45.

Which supply system uses a Protective Earth and Neutral conductor?

a)

TT

b)

TN-S

c)

IT

d)

TN-C-S

46.

Which supply system would have a Ra value?

a)

TT

b)

TN-S

c)

TN-C

d)

TN-C-S

47.

Which protective device requires a rating factor of 0.725?

a)

BS 88-3

b)

BS 3036

c)

BS 1362

d)

BS 88-2

48.

Which of the following is a Protective Measure against faults as given in BS 7671?

a)

ADS

b)

Barriers

c)

RCD

d)

Insulation

49.

Which of the following must be Earthed?

a)

Metallic service pipe

b)

Metallic luminaire

c)

Steel air ducting

d)

Structural steel

50.

What is the purpose of Basic Protection?

a)

To protect cables.

b)

To protect equipment.

c)

To prevent electric shock.

d)

To prevent damage to installation.

51.

Why are Earthing conductors installed?

a)

To connect together exposed and extraneous conductive parts.

b)

To provide a link between all extraneous conductive parts.

c)

To achieve basic protection.

d)

To achieve fault protection.

52.

What accessible parts would require a Protective Bonding Conductor connection?

a)

Structural steel beams

b)

Metallic conduit system

c)

Steel trunking system

d)

Metallic cable tray

53.

A circuit supplying a 13 A load is wired using a cable having a stated voltage drop of 11 mV/A/m and a length of 32 m. What would be the voltage drop for this circuit?

a)

0.45 V

b)

3.52 V

c)

4.58 V

d)

9.15 V

54.

What does Part M of the Building Regulations give guidance on?

a)

Heights of socket outlets

b)

Fire compartments in buildings

c)

Energy efficiency of lighting circuits

d)

Depths of cable chases in walls

55.

What type of drawing is commonly used to show the positioning of electrical equipment?

a)

Circuit

b)

Layout

c)

Wiring

d)

Schematic

56.

A new single-phase electrical installation within an office is to be wired using PVC/PVC insulated and sheathed flat profile 70 °C thermoplastic cable. Data cables are to be installed by a subcontractor using the same containment systems, and the Ze value for this installation is 0.35 Ω. The cables are to be installed using a mixture of surface, PVC conduit, metallic cable tray and PVC two-compartment dado trunking. The schedule for the final circuits is shown in the table below. The installation supply is to be supported via a solar photovoltaic system to be installed on the flat roof of the building which is 6 m from ground level

Why is compartmental trunking utilised within this installation?

a)

To keep different coloured cables apart

b)

To separate Band 1 and Band 2 circuits

c)

To separate cables to reduce eddy currents

d)

To keep lighting and power circuits apart

57.

A new single-phase electrical installation within an office is to be wired using PVC/PVC insulated and sheathed flat profile 70 °C thermoplastic cable. Data cables are to be installed by a subcontractor using the same containment systems, and the Ze value for this installation is 0.35 Ω. The cables are to be installed using a mixture of surface, PVC conduit, metallic cable tray and PVC two-compartment dado trunking. The schedule for the final circuits is shown in the table below. The installation supply is to be supported via a solar photovoltaic system to be installed on the flat roof of the building which is 6 m from ground level.

When a ladder is only anchored at ground level, what is the required minimum length to enable the inspection of the solar photovoltaic panels?

a)

6.2m

b)

7.2m

c)

8.2m

d)

9.2M

58.

Which part of the RCBO operates under overload conditions?

a)

Residual current trip.

b)

Electro-magnetic trip.

c)

Chemical trip.

d)

Thermal trip.

59.

A new single-phase electrical installation within an office is to be wired using PVC/PVC insulated and sheathed flat profile 70 °C thermoplastic cable. Data cables are to be installed by a subcontractor using the same containment systems, and the Ze value for this installation is 0.35 Ω. The cables are to be installed using a mixture of surface, PVC conduit, metallic cable tray and PVC two-compartment dado trunking. The schedule for the final circuits is shown in the table below. The installation supply is to be supported via a solar photovoltaic system to be installed on the flat roof of the building which is 6 m from ground level.

What is the Zs value for circuit 5, shown in Table 1, if the installation conditions result in the conductors operating at their maximum operating temperature?

a)

0.39 Ω

b)

0.68 Ω

c)

0.74 Ω

d)

0.82 Ω

60.

Why does BS 7671 recommend neutrals to be installed at light switches?

a)

To facilitate electronic switching devices.

b)

To ensure short circuits are avoided.

c)

To enable lights to be fully isolated.

d)

To provide emergency lighting test facilities.

8202-20 June 2018

Total questions: 60

Worksheet time: 1hrs 12mins

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