Answer Posted / krupa s

By using capacitors and condensers

Why single phase induction motors are not self starting ?

1602

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what is star delta starter? how it works? give its control and power diagram.

2033

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How Self works in DG set

1905

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What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?

1399

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What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.

2290

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ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

2116

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May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?

1435

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How to design the NGR Resistance

2013

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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

1809

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For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

2925

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How can we calculate the motor frame sizes?

3360

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In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.

1976

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How many types of electric motors are there?

1105

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WHAT IS THE WINDING PROCEDURE OF ELECTRICAL MOTOR

3918

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How to calculate Number of Earthing Pits....???

1531

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