Question

Which of the following is not the main drawback of single phase AC motors as compared to 3-phase AC motor?
(A) Poor efficiency
(B) Low power factor
(C) Low Overload capacity
(D) High output​

Answer 1

Answer:

I think C one

Explanation:

please check and comments me

Answer 2

High output​  is not the main drawback of single phase AC motors as compared to 3-phase AC motor. Option(D) is the correct answer.

• A single phase supply is used by the single-phase induction motor whereas the three phase supply is used by the three phase induction motor.
• The single-phase motor requires external devices, such as motor startups, to start because it cannot start on its own whereas the three-phase motor can start on its own without the aid of any outside devices.
• The single-phase motor has a low efficiency when compared to three-phase motors due to the fact that only one winding must carry all of the current.
• The voltage level that the single-phase motor produces is almost 230V whereas the voltage level that the three-phase motor produces is almost 415V.
• Compared to a three-phase induction motor, a single-phase induction motor has a lower power factor.

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