Answer / cool racer

Connect the multimeter across the terminals without disconnecting the motor leads.

For a delta connected motor, winding resistance = 1.5xmultimeter reading.

For a star connected motor with 3 leads brought out in the TB, winding resistance = 0.5xmultimeter reading.

For a star connected motor with 6 leads brought out in the TB, winding resistance = multimeter reading. (multimeter connected between phase and neutral)

can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

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Why we transmit the power at the voltage in the multiple of 11 or 1.1 like 11kv, 22kv, 66kv, 132kv...... some one told me that it is due to fomr factor 1.1 of sine wave. its fine but while transforming we can choose any voltage, so why only multiple of 1.1 there also.......? plz tell me.

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Meter p.t. ratio= 3×230/400 , c.t.ratio = 3×1 (2) A what is m.f.

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how did the testing of protection relays done through current injection

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Why reverse relay used

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why all transformer colour is same?

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as a electrical student why should i hire you?

0 Answers   TCS,

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what are the type of transformer?

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why rating of transformer is in KVA but of motor is in KW

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Why is DC use instead of AC for protection and control circuits?

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how calculate cable size in squre mm, when the load is given by in kw? do u have current rating chart of elctrical cables?

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how vector surge relay works ?

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