1
- The prospective short circuit current at
the origin of the consumer's installation must
be taken into account when:
| d |
selecting
the type of overcurrent protective device
to be installed. |
| |
Wrong |
2 - Design calculations involving conductors and an overcurrent protection
device is most likely satisfied when:
| d |
In
is not less than the design current Ib. |
| |
Wrong |
3 - If the cable is totally enclosed in Thermal Insulation for a distance of
2 m, the correction factor (Ci) will be:
4 - An arrow appearing through an electronic symbol means the value of the
device is:
5 - A 12V battery is connected across a set of resistors in series, values
being, 60? 30?, 100? and 45?. The current flowing in the circuit is:
6 - Where motor isolators are remote from the motor they must be:
| a |
capable
of being locked off. |
| |
Wrong |
7 - On completion of a periodic inspection and test, a copy of the electrical installation condition report should go to:
| a |
The person ordering the work. |
| |
Wrong |
8 - An RCBO is a device which is used as:
| c |
both
an overcurrent and residual current protection
device. |
| |
Wrong |
9 - The legal requirement for electrical equipment to be maintained in good
order is laid down in the:
| d |
Electricity
at Work Regulations 1989. |
| |
Wrong |
10 - MΩ is
the abbreviation used for:
11 - Warning signs with a blue background are:
12 - A length of copper wire has a resistance of 8 ?. What would be the resistance
if the length of wire were halved and the cross sectional area doubled:
13 - Which of the following does not determine the frequency of the Periodic
Inspection and Testing of an installation:
| a |
the
competence of the tester. |
| |
Wrong |
14 - DC motors create a constant, stationary, magnetic field in the conductors
attached to the:
15 - The type of fault which occurs when a phase conductor comes in contact
with a neutral conductor is called:
| b |
a
short circuit fault. |
| |
Wrong |
16 - The IEE Regulations are designed to provide:
| a |
safety
from fire, shock and burns. |
| |
Wrong |
17 - The maximum earth fault loop impedance, permitted by BS 7671:2008, for a 30 A BS 3036 fuse requiring a 0.4 second disconnection time is:
18 - The minimum depth through which a sheathed cable can pass through a joist
is:
19 - A black fire extinguisher contains:
20 - If two equal wattage lamps were connected in series the volt drop across
each of them would:
21 - A STAR connected system has a line voltage of 1000V, what is the phase
voltage:
22 - When carrying out an insulation resistance test between conductors on a one-way lighting circuit, have the:
| b |
switch closed and lamp out. |
| |
Wrong |
23 - A three phase cage rotor induction motor is required to operate on a 50
Hz supply and run at a speed of approximately 730 rpm. The number of
pole pairs required will be:
24 - Instrument test leads should comply with:
| c |
HSE
Guidance Note GS 38. |
| |
Wrong |
25 - The insulation resistance of two circuits is of 40M? an 36? respectively.
When tested together what is the total insulation resistance:
26 - Which of the following fire extinguisher types would you not use on an electrical equipment fire:
| c |
Foam
extinguishers. |
| |
Wrong |
27 - An overload current is:
| d |
an
overcurrent occurring in a circuit which
is electrically sound. |
| |
Wrong |
28 - Which of the following should accompany an electrical installation condition report:
| b |
copies of the inspection and test schedules. |
| |
Wrong |
29 - Electrical equipment users should be:
| a |
capable
of inspecting equipment for obvious defects. |
| |
Wrong |
30 - If a cable run measured on a drawing with a scale of 1:25 is 65 cm, what
is the actual length of the cable run:
Your Score was out of 30
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