Answer / rajesh k

in d case of generator, if we remove dc exciter (internal
exciter), the out put vl fail 2 produce electricity.
Consequently AVR will trip off the generator.

Answer / ketan

if the generator running in parallel opearation,generator
will draw power from busbars and act like motor to prevent
this we use reverse power relay

Answer / manan bhatt

if we remove dc exciter from running machine then due to
absence of rotational energy, machine will stop but will
take some time for remaining kinetic energy of rotor.

Answer / k.prakashchandra

In case of DC shunt motor the speed goes on increasing .In
case of grid connected gen, the machine will run as
induction motor when prime mover is shut down and as
induction gen if the prime mover is running.IN case of
series motor ,it will come to rest.

What is the minimum insulation value required for a cable between phase to phase and phase to earth of 380 Vac 50Hz circuit, having load arround 800 amps.

2 Answers   DEWA, TATA,

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How efficiency of thermal plant can be improved?

0 Answers  

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Wat is da difference b/w neutral earthing and unearthed system?

2 Answers  

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when will cause the negative sequence falut in electrical system?

2 Answers   Schneider,

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what is cathodic protection in Tank,and product pipelines?

4 Answers   IOCL,

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How to check 11000/1.732 to 110/1.732 Potentila transformer (PT)?

0 Answers   TCL,

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we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 Answers  

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How do you commission a power Transformer?

1 Answers   EEI,

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What is the Current equation in series RLC circuits.

0 Answers   ABB, Bhel,

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What are the difference between off-load tap changer and on-load tap changer in transformer?

2 Answers   HCL,

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if we put a energy meter in 500 kvar capacitor bank ,then how much units show in energy meter per day.

2 Answers  

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For a 50MVA (138/69/13.8 KV) transformer, what would be the maximum demand in order not to exceed 80% of its operating capacity.

2 Answers  

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