Electrical Interview Questions And Answers On Electrical Special Machines | B.Tech

Q22. What are the areas of the application of the two phase AC servo motors?

Sol: some areas of the application of the two phase AC servo motors are:

1.                Robotics              2. Conveying                   3. Pumping          

4.         CNC Machines                                            5.  LCD Manufacturing.

Q23. Write any two main advantages of the two phase AC servomotors.

Sol: the two main advantages of AC servomotors are: -

1. It requires negligible inspection and maintenance because of the absence of brushes and sliding contacts.

2. Since rotor requires no insulation, higher rotor temperature can be tolerated than in other type of the motors.

Q24. Write any disadvantage of the two phase servomotor.

Sol: the main disadvantage of two phase servomotor is its low efficiency.

Q25. What is the advantage of having low rotor inertia for a two phase servomotor?

Sol: the advantage of having low rotor inertia for a two phase servomotor is as –

1.                A high speed response can be obtained.

2.                Instant and accurate positioning of load is possible.

3.                It is very easy to stop servo motor at any position.

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