Answer Posted / pankaj agarwal

there are two scenarios one in which it is running in
islanding and other in which it is interconnected with
other system. in case one as field is cut there will be no
supply of exciting current and terminal voltage will fall
to zero. also turbine will tend to overrun as there is
sudden removal of load.
in case two as it is interconnected the stator is still
excited and it will behave like induction generator.

can anyone provide me a amf panel control wiring using ec-2 relay?

2383

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How to calculate the current of Highpressure Mercury Vapour Lamp?what is the basis?whether we have to consider power factor or not?

2222

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State the types of distortions in amplifier?

1248

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What is Bolted fault?

2269

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1884

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The slip during plugging operation is given by= A 1-s B 2+s C 1+s D 2-s

2886

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Which power will flow first if we switch on a motor Active or Reactive? How?

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1668

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HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS

1939

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why we have and use 3 phase not 2 or 4 or other in power system?

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An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP wants to distribute these blocks to 2600 customers as follows. a) 200 medium size businesses; each needs 16 addresses b) 400 small businesses; each needs 8 addresses c) 2000 households; each needs 4 addresses Design the subblocks and give the slash notation for each subblock. Find out how many addresses are still available after these allocations.

7770

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

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