quiz tx

Transformer is....

• a magnetic field device

• transfer electrical energy from one circuit to another

• transfer power from source to load

How many type of core?

• 1

• 2

• 3

What are 3 main parts of transformer?

• primary, secondary windings and core

• primary and secondary windings

• ac source, windings and load

How to find transformer ratio?

• E1/E2

• R1/R2

• V1/V2

This figure is..

• approximate eq cct

• exact eq cct

• practical tx eq cct

this cct referred to..

• primary side

• secondary side

This figure shows phasor diagram of..

• unity power factor

• lagging power factor

• leading power factor

the main purpose of short cct test is to find...

• Req and Xeq

• Rc and Xm

find Rc, Xm,

• Rc = 240

  Xm = j33.7

• Rc = 18.5

  Xm = j132

• Rc = 2.38

  Xm = j3.09

resistive heating losses in the core of the tx known as....

• copper losses

• hysterisis lossess

• eddy current losses

• leakage flux