GMJ 6035 electrical quiz NEW 6

Which one of the following should be carried out before any electrical work takes place?

• Safe isolation

• Safe insulation

• Safe continuity

• Safe polarity

Which one of the following units should be used to check if a circuit is dead?

• Multimeter

• RCD

• Proving

• OHMs

Which one of the following tests should be carried out on insulation?

• Polarity

• Resistance

• Impedance

• Continuity

The floor area covered by a ring final circuit must not exceed

• 25 m²

• 50 m²

• 75 m²

• 100 m²

The main protection on a domestic consumer unit is provided by which one of the following?

• RCD

• RBC

• MCB

• MCD

A 9.8 kw shower should be protected by a circuit breaker rated at

• 35 amp

• 40 amp

• 45 amp

• 50 amp

Which one of the following tests should be carried out to ensure that phase and neutral are not cross connected?

• Polarity

• Resistance

• Impedance

• Continuity

The electrical circuit which provides a dedicated supply for a boiler is called

• a ring main

• a radial circuit

• a spur

• an ancillary circuit.

Which one of the following tests should be carried out on the earthing circuit with the circuit live?

• Earth loop impedance

• Insulation resistance

• Polarity

• Earth continuity

The standard UK grid voltage is

• 11 KV

• 33 KV

• 132 KV

• 400 KV