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BARC Interview Questions
Questions Answers Views Company eMail

what is quality factor in series resonance circuit and calculate the factor of voltage magnification? how it happens?

1491

how to change the load sharing between two synchronized identical alternators when both are running with Diesel engine? assume both are feeding to same feeder?

1 2752

What happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?

3 6731

difference between over current and over load protection?

5 13219

explain working of differential protection for a transformer?

1 3228

derive DC RMS value for half wave rectifier?

2713

what is droop control?

1626

what do u understand about FACTS? how they are useful?

1534

what is significance of B-H curve? how it differs form ordinary transformers to Amorphous Transformer?

2 22055

explain with diagram how to protect transformers and substations from over current with help of CT's?

1504

how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

2344

what is warm up time in power supplies and why it is required ?

1594

Why carbon brushes are used in motors?

6 9336

Why induction motor is widely used in industry

2263

The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.

1491

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1831