Which type of bearing is provided in small induction motors to support the rotor shaft ?
Correct answer: A. Ball bearings
- A. Ball bearings
- B. Cast iron bearings
- C. Bush bearings
- D. None of the above
Explanation
Small induction motors commonly use ball bearings to support the rotor with low friction and maintain alignment. Bush or sleeve bearings are used in some simple, low-cost appliances but are not the standard answer for small induction motors.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electrical Machines
1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrical Machines questions
A pump induction motor is switched on to a supply 30% lower than its rated voltage. The pump runs. What will eventually happen ? It will____________?
5 H.P., 50-Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest ?
A 3-phase slip ring motor has____________?
The speed characteristics of an induction motor closely resemble the speedload characteristics of which of the following machines?
It is advisable to avoid line starting of induction motor and use starter because____________?
If a 3-phase supply is given to the stator and rotor is short circuited rotor will move___________?