Answer / j.kesavan

one phase failure in py side ,sy side allphase got votage
with low value,

Answer / kuttivenu

Rest of the two phases have voltage & become two phase for
the Secondary side.

Answer / anandharaj.s

That s depands on the winding type. If windings are wound
in indivitual core 1st one is correct. If it wound in
single core then 2 nd one s correct.

why do we have spikes enough to burn electronic boards, when generators are not grounded

0 Answers  

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where can the transformer having vector group Yny0 be used??

0 Answers   GK Power, NEA, Petrotech,

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what is the working principle of soft-starter & how it diff. from VFD ?????????

5 Answers   L&T,

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megger generates D.C. voltage while earth tester generates A.C.voltage is it true? I know for megger it is D.C generator but what about earth tester?

4 Answers   IOCL,

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how can we select the appropriate VCB ?

0 Answers   Reliance,

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why high speed tripping relay will be used in tripping circuit why not normal relay

0 Answers  

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when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

1 Answers  

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why do some transmission towers have two insulators at one side and three insulators at the other side

2 Answers  

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If we touch the Capacitor terminals you feel shock after the capacitor was put in operation and not in case of inductor though both are energy storage elements.why?

4 Answers   HAL,

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What is Vk and Imag i.e Knee point voltage & Magnetising Current? How to calculate above values? How to define accuracy class 5P10?

7 Answers   Deccan Cements, Doosan, Torrent Power, Transco,

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why dc is used in control circuits for MV & LV switchgeras instead of ac

0 Answers  

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Material commonly used in making transformer core is A cast iron B mild steel C high silicom steel D high carbon steel

1 Answers  

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