Quiz sheet for transformer operation

If a transformer has turns ratio of 2:1 and the primary is connected to a 240 Volt supply, the secondary voltage will be 

A) 120 Volts

B) 480 Volts

C) 241 volts

D) 239 Volts

ANSWER: A

Increasing the amount of iron in the magnetic circuit of a transformer will 

A) Improve efficiency

B) increase voltage output

C) increase power factor

D) increase secondary current

ANSWER: A

To decrease voltage drop when transmitting power over long distances a _____________transformer could be used

A) step up

B) step down

C) auto*

D) current 

ANSWER: A

To supply high current for electroplating a ____________ transformer would be used

A) step down

B) step up

C) auto

D) current

ANSWER: A

To supply high current for welding, a _______________ transformer would be used

A) step down

B) step up

C) auto

D) current

ANSWER: A

Transformers operate on the principle of 

A) mutual induction

B) coil interaction

C) turns induction

D) back emf

ANSWER: A

Last modified: Monday, 31 May 2021, 8:43 PM