Answer Posted / rated kuldeep

Well friends--- % impedance is defined as the ratio of
impedance voltage(the voltage at rated frquency applied to
one winding and other winding kept short circuit to flow
full rated current in circuit) to the rated voltage of the
transformer... Correct if i m wron g.

when we decide to use soft starter drive or vfd drive in mcc to operate apump?

1977

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Why is back emf used for a DC motor? Highlight its significance.

1197

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generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

1917

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can u please mail me the syllabus for GET exam for damodar valley corporation?

2067

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If rotor works in clock wise what happens

1904

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what is distribution board?

2299

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define displacement & magnitude ?

1836

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ht side line to earth voltage

1566

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why dc is used in control circuit for mv & hv switchgear instead of ac

1914

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WTA used cb?

1912

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Please give me a erda placement paper

1786

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What is the high series capacitance winding on high voltage power transformer ?

2154

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A system absorbs 100 k J of heat and the increase in its internal energy is 100 kJ; the work done is

1273

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What are the main significances of root locus?

1225

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At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?

2029

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