Chapter 15 - Electromagnetic Induction - 2

Chapter 15 - Electromagnetic Induction - 2

1. The unit of mutual inductance and self inductance is______________.

a) Ohm
b) Volt
c) Ampere
d) Henry

2. Self inducting coils are usually called___________.

a) Insulators
b) Inductors
c) Conductors

3. The induced emf of an A.C generators varies _____________ with time.

a) Sinusoidally
b) Sinually
c) Sinsoally

4. The phenomenon in which a changing current in one coil induces an emf in another coil is called the ____________.

a) Mutual induction
b) Self induction
c) Total Induction

5. Transformer works on the principle of __________.

a) Total Induction
b) Self inductin
c) Mutual induction

6. Number of coils wound on a metallic core is usually called as __________.

a) Core
b) Amature
c) Armature

7. Commutator is also called as __________.

a) Electrical arm
b) Armature
c) Splitter

8. The electric field was discovered by:

a) Michael Farady
b) Ampere
c) Oersted
d) Henry

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