Electrical 2 question - 2nd intermediate

Reluctance is denoted by letter ____

• B

• F

• R

• S

The symbolof magnetic flux density is _____

• B

• H

• R

• S

The ratio of electric displacement vector (D) in a dielectric medium to the applied electric field strength ________

• electric field

• 
  flux density

• 
  premititvity

• none

The types of induced EMF is _______ and _______________

• statically and stationary

• 
  mutally and stationary

• 
  statically and mutually

• none of these

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

• mutal inductance

• Self inductance

• Dynamically induced EMF

• None

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

• mutually induced EMF

• self induced EMF

• both A and B

• 
  none

current transformers are used to measure ___________.

• voltage

• 
  current

• power

• 
  none

Transformer is a static piece which transforms electric power from one circuit to another without changing

• Frequency

• voltage

• current

• all of the above

The potential difference between any line and neutral point gives the ___________

• voltage

• 
  current

• phase voltage

• phase current

In an ideal transformer

• windings have no resistance

• 
  core has no losses

• core has permeability

• all of the above