If u have Powergrid model question papers Please send to below mail ID rajutheprince@gmail.com

0 Answers  

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what is formula in determining the size of Circuit Breaker for transformer with the following specifications. 7 units of 1600 volts (primary) and 400 volts (secondary). Both Primary and Secondary will have a circuit breaker which is SF6. What should be the Switchgear Main Breaker Size anf the sizes of each brances Circuit Breaker for Primary.

1 Answers   ABB,

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DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER

0 Answers   SRA,

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The armature of shunt dc motor has 0.8ohm resistance and motor is to run on 120V circuit.If motor is suddenly thrown on circuit while armature at standstill then current drawn by motor will be??Also back emf in normal running is 110V

2 Answers  

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difference b/w semiconductor and insulator

5 Answers  

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what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?

0 Answers  

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On what principle electric motor works?

0 Answers  

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What is double delta conection in AC Motor? And can we done the double RPM of the motor by double delta conection?

1 Answers   vguard,

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A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

0 Answers  

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Why phase sequence ryb called colours.

1 Answers   MS Life, NTPC,

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what is effect of leading power facter on the system and billing

0 Answers   TATA,

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What are the commercial names of overhead conductors used in India?

3 Answers   UPSC,

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