Electricity at low frequency

Electricity is generated at a low frequency of ------ and high voltage of ------- or --------- in Nigeria

• 15 hertz, 11kv or 33kv

• 50 hertz,11v or 33kv

• 15 hertz,11kv or 30kv

• 50 hertz,11kv or 33kv

Burning coal power station in Nigeria is located at --------

• Afam power station

• Oji power station

• Kainji power station

• Shiroro power station

Generator Control Panel is found where?

• Sub-station

• Power station

• Afam station

• Oji station

The component of electricity transmission that is required at the final distribution stage is called

• Conductors

• Generator control panel

• Transformers

• Feeder pillar

The following are protective devices except

• Circuit breakers

• fuses

• lighning arrestors

• line support

The insulator shown above is made of ------material

• burnt brown

• procelain glazed brown

• glass

• wood

Identify the type of insulator shown above

• glass

• strain

• suspension

• pin

Electricity is transmitted from the National grid to the following places EXCEPT

• Airports

• Hospitals

• Asorock

• Lekki phase 1

The picture shown above is used to transmit------

• Medium tension

• Low tension

• high tension

• 415v

The type of cable used to tansmit electricity over long distances is --------

• copper

• Aluminium

• steel

• Iron