CUET-PG SERIES Electrical-circuits-and-machines
Three Phase Induction Motors
2 previous year questions.
Volume: 2 Ques
Yield: Medium
High-Yield Trend
2
2023 Chapter Questions 2 MCQs
01
PYQ 2023
medium
electrical-circuits-and-machines ID: cuet-pg-
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. 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:
1
A and D only
2
A and B only
3
C and D only
4
B and C only
02
PYQ 2023
medium
electrical-circuits-and-machines ID: cuet-pg-
Skewing is used in Induction motor in order to reduce the torque due to:
1
Time harmonics
2
Space harmonics
3
Slot harmonics
4
Reverse rotating fields