In an induction motor if air-gap is increased__________?
Correct answer: A. the power factor will be low
- A. the power factor will be low
- B. windage losses will be more
- C. bearing friction will reduce
- D. copper loss will reduce In an induction motor
Explanation
A larger air gap increases the magnetizing current required to establish flux, making the induction motor draw more reactive current and lowering its power factor. It does not directly reduce bearing friction or copper loss.
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
In case of a double cage induction motor, the inner cage has__________?
When /?2 is the rotor resistance, .X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running conditions will be_____________?
In induction motor, percentage slip depends on__________?
The torque developed by a 3-phase induction motor least depends on__________?
Which motor is preferred for use in mines where explosive gases exist ?
Lubricant used for ball bearing is usually___________?