Answer / waseem aslam

Control circuit wiring of substation refers to wiring of protection relays of transformer with the circuit breaker and wiring of over-current/earth-fault protection relay in the CB, including manual tripping operation.

Answer / k.prakashchandra

The control circuit is for opening and closing on command.

avr is an automayic voltage regulator ... it regulates voltage before it synchronise with grid after synchronisation it regulates power factor why....

7 Answers  

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why we used capacitor in induction motor?

4 Answers   Mitsubishi,

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What will Happened if the polarity of CT is changed?

13 Answers  

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What is EOL?

1 Answers  

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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

0 Answers  

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in alternator why on load terminal voltage is less than no load teprminal voltage

1 Answers  

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how to Select its CORE in electrical cables based on its applications? or Application of various types of electrical cable based on it CORE?

0 Answers  

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Please define ohm’s law for a.c (alternating current)?

0 Answers  

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any calculation method for decide cable size for current?

1 Answers  

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what is buchholz relay?what is it used for?

8 Answers   Engineers India Limited, NFCL,

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How many electrones need to flow in one second to equivalent to one Ampere.

3 Answers  

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WHY TRANSFORMERS ARE RATED IN 11KV 22KV 33KV Instead off 10kv 20kv 30kv

4 Answers   BCET, NTPC,

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