railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Single Phase Motor and Special Machines
Which of the following are the advantages of the BLDC motors?
1. They are more reliable than brushed DC motors.
2. They are cheaper than brushed DC motors.
3. They can operate at high-speed under any condition.
4. No airflow is required for cooling.
5. They can accelerate and decelerate easily.
Correct code is
1
Only 1, 2, and 3
2
Only 2, 4 and 5
3
Only 1, 3, 4 and 5
4
1, 2, 3, 4 and 5