Answer Posted / chandru williams

since all the equipments are designed to run at a frequency
of 50 Hz ( +/- 2 Hz) , low freuency will make the generator
to run at a speed less than the designed value thus
hindering the designed value of output.

wat is meant by PX class in ct?

2056

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Differenciate between circuit wiring and sub main wiring with illustrations

2259

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why we use Test Terminal Block in 11 KV and 33 KV electrical panels.

1382

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what is W.T?specify the acceptable range?

1982

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I want to merge a cable..in between two metering Cubicals which contains CT's and PT's and Energy meter..before taking merger..what are the common things required?

1666

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Why should be the frequency 50 hz 60hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50 hz 60hz?

1146

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would the same effect be achieved by reversing the connection to one winding of the induction motor 3-phase?

1827

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What is the actual calculation for transformer short circuit test?.

2481

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How to synchronization will be done between two DGs ?

1783

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Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.

2154

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some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

1775

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what are the stresses in circuit breakers ?

2028

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what clearance required for 4.5 mva dry type transformer?

2037

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advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

1808

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what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?

2513

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