1. . Device that converts mechanical energy into electrical energy is ________
(A) AC Motor
(B) DC Motor
(C) Generator
(D) All of these
2. . AC generator is based upon
(A) Ampere’s law
(B) Coulomb’s Law
(C) Faraday’s Law
(D) Lenz’s Law
3. . The armature of DC generator is laminated to
(A) Reduce eddy current
(B) Provide the bulk
(C) Reduce the bulk
(D) None of these
4. . Which of the following is not a part of AC generator?
(A) Armature
(B) Commutator
(C) Magnet
(D) None of these
5. . What is used in generator to reduce friction?
(A) Armature
(B) Commutator
(C) Bearing
(D) None
6. . When a coil rotated in magnetic field the induced current in it
(A) Remains same
(B) Becomes zero
(C) Becomes maximum
(D) Continuously changes
7. . In alternating current generator, AC current reverses its direction
(A) 10 times per second
(B) 20 times per second
(C) 50 times per second
(D) 40 times per second
8. . What are the main parts of an AC Generator?
(A) Stator
(B) None of these
(C) Both Stator & Rotor
(D) Rotor
9. . Which of following is not a component of an AC generator
(A) Field
(B) Armature
(C) Prime Mover
(D) Starter
10. . What determines the frequency of a.c. produced by a generator?
(A) The number of rotations of coil in one-second
(B) Speed of rotation of coil
(C) Both A and B
(D) None of these