Answer Posted / abdulquddus

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Explain the working of variable frequency transformer?

1212

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How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.

1794

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What is inverse definite minimum time lag relay? Where is it use?

2862

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what is difference between bus coupler and auto transfer switch

4262

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why on axial hitting up of air blast on hydrogen produced in oil circuit breaker,temperature rises of the core of the arc?

2023

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i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula

2254

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What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?

1921

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how i calculate the syncrones generator NGR resistance .if we have a 6mw generator line voltage of generator 11kv also line current 393.3 ampere.

2163

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What is superposition theorem?

1244

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what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

2107

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

2092

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what is the clear formula to calculate cable size for a load

2023

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List some examples of renewable energy?

1276

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How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

1963

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working principle of oil startar

1959

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