Answer Posted / will

The cables can be XLPE , PVC etc insulated. now during the
testing the high voltage is applied to the cable and to
test the cable for rupture.Normally the operating voltage
of the cable can be in 1000 volts , but the test voltage is
in KV's e.g 11kv for the short duration.

WHAT IS START TO INDUCTION MOTER IN STAR TO DELTA OF >5HP ?

1865

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Iin ESP why positive is grounded ? why not negative ?

2641

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What is the purpose of using busbar mounting fuse?

2032

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what is the use of sdf?

2096

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In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1952

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What are root loci?

1083

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BSNL TTA EXAM QUESTION

2171

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Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.

2991

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In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)

11817

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how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

2372

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How we can come to know the substation range,without go through any name plate ?

2099

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if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

1741

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what causes contact chatter when there is no demand on the air conditioning unit?

2031

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What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?

3942

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What facility we get after CT secondary earthing and how?

2243

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