The direction of induced e.m.f. can be found by_____________?

Related Mcqs:

Mutually inductance between two magnetically-coupled coils depends on____________?

A. permeability of the core B. the number of their turns C. cross-sectional area of their common core D. all of the above...

A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area, length etc.) remaining the same, the inductance will be___________?

A. 6 mH B. 14 mH C. 24 mH D. 48 mH...

The co-efficient of coupling between two air core coils depends on____________?

A. self-inductance of two coils only B. mutual inductance between two coils only C. mutual inductance and self inductance of two coils D. none of the above...

If the coil is wound on an iron core the flux through it will_______________?

A. decrease B. become zero C. remain the same D. increase...

When the motor is at its maximum speed then back emf will be______________?

A. Maximum B. Zero C. Intermediate values D. No back emf...