Answer Posted / prashant

Neutral does not carry curret only in the cae of a balanced
load. However in the case of an unbalanced load ( 3
Phase ), neutarl definitely carries the unbalance current.
That is why we have 4 pole ELCBs - to ISOLATE THE CIRCUIT
IN CASE of fault in neutral

Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason

1919

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Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected

3132

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What is the feedback in the control system?

1094

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Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

1156

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what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB

2103

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Post possible questions for Power Factor Panel FAT / SAT

1409

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How can we measure the residual voltage in dc machines?

1874

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what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.

2206

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what will happen if synchronous machine rotor fed from single phase ac supply 

1750

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is that a problem if i connect a single phase load to a secondry delta connected transformer but i get a neutral from other transformer i the system?

1865

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What is the effect of pd controller on system performance?

1126

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How many points does a Circuit can have?

1974

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What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

1759

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diff.between servo motor and ac motor

2064

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WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?

1985

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