Answer Posted / k.prakashchandra

Closing is on command and tripping is either on command or
auto .You are testing the circuit by closing the CB using
the control switch

how does directional relay work incase of ac ?

1568

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what can be the causes of capacitor start motor having a higher current that its actual

2007

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How to calculate earth fault current for 6.6 KV , 50 HZ , 756 Amps , 3000 RPM , 0.8 PF generator

2111

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what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?

5183

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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.

1915

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Draw the single line diagram of the power station?

1142

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What is grid collapse? what is the reason for it?

2217

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what is the meaning of neutral displacement ???

2795

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i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

1842

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HOW TO TEST A LIGHTENING ARREST ER ?

2252

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Percentage losses in power generation?

3051

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diff. between tension mode & speed mode

2392

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i karmveer bharti persuing b.tech . plz send me syllabus and name of reference books. for preparation of section eng.

2188

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In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

2019

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Draw torque - speed curve and load curve of induction motor? mark operating point ?

2122

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