railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Single Phase Motor and Special Machines Servo Motors
Which of the following statements related to servo motors is INCORRECT?
1
It provides high levels of torque at high speed.
2
It is inexpensive and widely available.
3
Servo motors can work in AC or DC drive.
4
It can be operated at 80-90% efficiency.