Question
Electrical Circuits and Machines Question on Three phase induction motors
In a 3-Φ Induction motor connected to a balanced 3-Φ supply, if one of the lines suddenly gets disconnected, then the:
A. Motor will come to a standstill.
B. Motor will continue to run at the same speed with line current unchanged.
C. Motor will continue to run at a slightly reduced speed with increased line current.
D. Rotor currents will have both sf and (2-s)f components frequencies where s is slip and f is the supply frequency.
Choose the correct answer from the options given below:
A
A and D only
B
A and B only
C
C and D only
D
B and C only
Answer
C and D only
Explanation
Solution
The correct option is(C): C and D only