Answer Posted / jeetendra kadam

current rating also depends on no. of strands & diameter of
the strand. for ex. if u take 2.5sqmm finolex cable, no of
strands are 50 and diameter is 0.25mm or no. of strands are
80 and diameter 0.2mm. It can carry upto 20A AC/DC.
practically I using the cable. pl. check finolex cable wire
chart.

how we do Vector group ,magnetic balance and tap changer test in Transformer?

2424

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please send previous exams question papers

1778

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why the pf of semiconductor device is improved the electrical devices

1800

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What is meant by reset level of the relay?

1155

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I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

1919

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The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.

1977

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what is x'mer ,isolation x'mer & yltra-isolation x'mer?????

2388

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how can check the resistance of battery contact?

2160

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how can we say that stator magnetic field rotates with synchronous speed?can we derive?

1720

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ht side line to earth voltage

1524

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what is the soft starter principle? how is connection diagram? what is the procedure for checking the connection?

2117

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. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?

2080

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define the active power?

1941

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Starting Time of LT & HT Motor

1886

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I have 440v power coming to facility,( not being used ) can I buy large generator, (gas) to sell power back to electrical co.

2398

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