Quiz sheet for transformer operation

A toroidal transformer 

A) is dough-nut shaped

B) is square

C) has two cores

D) is a shell type

ANSWER: A

For safety reasons the ______________ side of the transformer is wound closest to the core

A) Low voltage

B) High voltage

C) laminated

D) insulated

ANSWER: A

Most high voltage transformers use _______________ for cooling.

A) mineral oil

B) air

C) synthetic oil

D) distilled water

ANSWER: A

The lid on a transformer containing oil is held in position by 

A) nuts and bolts

B) clamps

C) welding

D) springs

ANSWER: A

The type of transformer that uses the same winding for both primary and secondary is a/an

A) auto transformer

B) Current transformer

C) linear transformer

D) toroidal transformer

ANSWER: A

The type of transformer used in conjunction with metering equipment to measure high power usage on a LV supply is called a 

A) current transformer

B) voltage transformer

C) lateral transformer

D) metering transformer

ANSWER: A

The windings in high power transformers are mostly

A) flat

B) square

C) round

D) hexagonal

ANSWER: A

The windings of a step up transformer with the largest CSA conductors is the 

A) Low voltage side

B) High Voltage side

C) Secondary side

D) Low current side

ANSWER: A

To prevent eddy currents, transformer laminations are insulated by

A) an oxide layer on each lamination

B) air gaps between the laminations

C) sheets of paper or PVC between the laminations

D) painting the laminations

ANSWER: A

Transformer laminations are made of 

A) silicon steel

B) copper

C) stainless steel

D) cast iron

ANSWER: A

Transformer oil is also used as 

A) baby oil

B) cooking oil

C) motor oil

D) lubricating oil

ANSWER: A

Transformer windings are made from copper or 

A) aluminium

B) brass

C) steel

D) iron

ANSWER: A

Last modified: Monday, 31 May 2021, 8:45 PM