(A) Silicon steel
(B) Cast iron
(C) Aluminium
(D) Bronze
Ans : (B) Cast iron
The frame provides the structural support for all other motor components.
The frame must be made up of the rigid material that can absorb vibration as well as noise in the induction motor.
The frame of the induction motor is made either of welded sheet steel or fabricated steel, cast iron or cast aluminum alloy.
The material is selected based on cost, heat transfer characteristics and manufacturing capability considering the size of the machine.
The frame of small AC induction motor is made up of cast iron but the frame of medium size induction motor is made up of welded sheet steel.
TRANSMISSION AND DISTRIBUTION MCQ
BASIC ELECTRICAL MCQ
BATTERY AND CELL MCQ
