Q. 1A/An __________ is a rotating device that converts electrical energy to mechanical energy.
Q. 2Which two part of an electric motor is responsible for changing the direction of the current?
A.the commutator and the rotor
B.the axle and the brushes
C.the commutator and the brushes
D.the axle and the commutator
Q. 3The principle on which an electric motor operates is
A.the continuous change of the magnetic poles creates a rotating force that makes the armature spin
B.the change in the value of current under the influence of magnetic field produces rotating force
C.a current carrying conductor under the influence of magnetic field produces rotating force.
D.None of the above
Q. 4The purpose of split rings in an electric motor is
A.to provide support to the rotating armature
B.to separate the load and the rotating armature of an electric motor
C.to change the direction of the current delivered to the armature.
D.Both B and C
Q. 5Which of the following statement is true about an electric motor?
A.the electric motor is based on the principle that when a current carrying conductor is kept under the influence of magnetic field it experiences a force
B.the commutator is responsible for the change in the direction of the current supplied to the armature conductor.
C.an electromagnet is used in place of a permanent magnet for the commercial use of the motor
D.All of these