EE-2 TEST (2)

the magnitude of the induced EMF is equal to the rate of change of __________ linkage with the circuit.

• flux

• current

• volts

• EMF

Fleming’s right hand rule is applicable to

• dc generator

• dc motor

• transformer

• all of the above

But the potential difference between any two line gives the ___________

• voltage

• line voltage

• phase voltage

• phase current

The EMF equation of transformer is

• 4.44fØN

• 4.44fN

• 4.44f

• 4.44Ef

A transformer transforms

• frequency

• Voltage

• current

• voitage and current

In an ideal transformer 

• windings have no resistance

• core has no losses

• core has permeability

• all of the above

The Conductor remains stationary and flux linked with it, is changed__________

• mutually induced EMF

• self induced EMF

• both A and B

• none

If current changes in coil 1, an emf is induced in coil 2

• mutal inductance

• self inductance

• dynamically induced emf

• None

The types of induced EMF is _______ and _______________

• statically and stationary

• mutally and stationary

• statically and mutually

• none of these

Transformer works on the principle of

• Flemings left hand rule

• Flemings Right hand rule

• mutual induction

• none