Correct option is A
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For a slip 's' and supply frequency 'f, the frequency of current in rotor will be-
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Access ‘RRB JE Electrical Engineering’ Mock Tests with
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Similar Questions
- 1)Which of the following is not an essential part of a motor meter?
- 2)PVC insulated non sheathed single core cable is mainly used-
- 3)What will be minimum insulation resistance of a system operated at maximum voltage of 250V?
- 4)Which of the following emits almost monochromatic light
- 5)In which type of motor flywheel in used for heavy load.
- 6)What is the principle of solar energy based on?
- 7)Voltmeter provide a route to-
- 8)Star to star transformer works properly when?
- 9)
1 HP is equivalent to how many watts?
- 10)Which of the following is not a method of speed control of induction motor?
