Electrical Engineering Quiz

What type of transformer is used after the power plant substation?

• Step-up transformer

• Step-down transformer

• Voltage regulator

• Distribution transformer

What equipment do distribution systems use to connect loads to transmission lines?

• Circuit breakers

• Generators

• Switchgear equipment

• Transformers

What do you mean by 3 x 1c 300Al XLPE 11KV in a single line diagram?

• 3 times 1 centimetre 300 amps line, unearthed cable

• 3 core plus 1 core 300 amps lead sheathed 11KV cable

• 3 core 300 mm square copper sheathed 11KV cable

• 3 single core 300 mm square aluminium sheathed 11000V cable

What you mean by ‘phasing out’ term in jointing cables would be?

• A system to ensure safe isolation

• The replacement of old colour markings with new ones

• The location of high resistance joints

• A method of ensuring correct phase rotation

Cable spiking is used for

• Ensuring a cable is dead at the point of work

• Prove a cable is live and still in service

• Ensure no current surges are present

• Ensure no voltage surges are present

An expansion joint is used in some types of high voltage underground cable to the counteract the effect of

• Excessive oil pressure

• Load surges

• Increased loading

• Subsidence.

When handling cold pour resins the mandatory PPE would be

• Overalls and eye protection

• Disposable gloves and breathing apparatus

• Breathing apparatus and overall

• Eye protection and disposable gloves.

The instrument used for synchronisation would be.

• Earth impedance tester

• Insulation resistance tester

• Multi-meter

The full form of PILCSWA in Underground cables refers to

• Plastic insulated lead covered steel wire armoured cable

• Plastic insulated laminated copper steel wire armoured cable

• Paper insulated lead covered steel wire armoured cable

• Paper insulated lead conductor steel wire armoured cable

One method of testing for moisture in oil is by

• Hygroscopic crystals

• Litmus paper

• A crackle test

• Gas produced by a fault