Revision Test

Which material is light, soft, ductile, highly conductive, corrosion resistive?

• alluminium

• copper

• mild steel

• nylon

Which material is very malleable, tough and ductile, highly conductive, corrosion-resistant?

• aluminium

• copper

• mild steel

• nylon

What connects the current source with the commutator of a motor?

• magnet

• brushes

• armature

• coil

Which material has the following properties: high strength, ductile, tough, fairly maleable. Cannot be hardened and tempered. Low cost. Poor corrosion resistance.

• aluminium

• copper

• mild steel

• nylon

Which material is hard, tough, wear-resistent, self-lubricating?

• aluminium

• copper

• nylon

• mild steel

______ is a material which contains copper and zink.

• aluminium

• mild steel

• brass

• alloy

It flows in one direction only

• DC

• AC

• AC/DC

• Diode

It rectifies alternating currents

• DC

• AC

• AC/DC

• Diode

The function of a ______is to protect a circuit.

• fuse

• diode

• cappacitor

• rheostat

The _______ controls the current flow in the circuit.

• rheostat

• battery

• lamp

• fuse