TOP 120 Interview Questions on Motors: Best Guide

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Interview Questions on Motors: Insights and Expertise
Interview Questions on Motors

Interview Questions on Motors

Motors come in various types such as AC (Alternating Current) motors including Induction, Synchronous, and Universal motors, and DC (Direct Current) motors like Brushed DC and Brushless DC motors. Each type has specific applications based on their characteristics.

Construction of Induction Motor: Components and Assembly(Interview Questions on Motors)
Induction Motor Construction(Interview Questions on Motors)

Synchronous motors operate at a constant speed determined by the frequency of the power supply and the number of poles, while induction motors have a speed slightly lower than synchronous speed due to slip. Synchronous motors require an external DC power source for excitation, unlike induction motors.


13. How does the number of poles in a motor affect its speed and torque characteristics?

Soft magnetic materials in motor cores reduce hysteresis losses and eddy current losses, enhancing the motor’s efficiency.

Squirrel Cage Rotor: Components and Design (Interview Questions on Motors)
Squirrel Cage Rotor(Interview Questions on Motors)
Wound Rotor: Construction and Components(Interview Questions on Motors)
Wound Rotor(Interview Questions on Motors)

Motor protection devices such as overload relays, thermal sensors, and circuit breakers prevent motor damage by detecting faults like overcurrent, overheating, or short circuits.

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