Control of Traction Motors Interview Questions and Answers: 1. The resistors employed for control of traction motors are designed for short-time rating. Why ? Ans. Because control resistors are required…
Electric Traction Motors Interview Questions and Answers: 1. Why the magnetic circuit of a traction motor is not made of cast iron ? Ans. Because cast iron cannot withstand continuous…
Thyristor Control of Electric Motors Interview Questions and Answers: 1. Why the thyristor control is preferred over Ward Leonard system of speed control ? Ans. The thyristor control has some…
Control Devices for Industrial Motors Interview Questions and Answers: 1. What are the two main applications of a thyratron ? Ans. Two main applications of thyratron are (i) switching and…
Protection of AC Generators and Motors Interview Questions and Answers: 1. What are the common types of generator faults ? Ans. The common types of faults occurring in synchronous generators…
Variable Reluctance Stepper Motor Working Principle: A Variable Reluctance Stepper Motor Working Principle consists of a single or several stacks of stators and rotors-stators have a common frame and rotors…
Blocked Rotor Test of Induction Motor: This Blocked Rotor Test of Induction Motor is used to determine the series parameters of the Circuit Model Parameters of an induction motor. The…
No Load Test of Induction Motor: In this No Load Test of Induction Motor, the motor is run on no-load at rated voltage and frequency. The applied voltage and current…