Answer Posted / kumar manish

VCB saftey-
1.Earth leakage
2.Current unwanted due to Short Circuit.
3.Over load

for 750 kw LT load what will be the ht kva

1709

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1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

8401

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How to determine stage of Automatic Power factor controlling Relay(Apfcr)?

2219

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although ckt breakers have taken the place of old fuse. But instead of it , these older ones are still used in the industries and homes ? why .... what are their advantages and disadvantages ? which one is leading and winning the race and competition ?

2100

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what is the max. acceptable leakage current in 33kv bus bar

3074

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what is v/f control in VFD?

1598

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Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m

5261

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it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

2079

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In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?

2210

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what is the difference between skin effect

2318

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If a high resistance fault occurs,then what are the changes will happen in the system?

1525

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What is size 00, 01, 1 etc., in HRC fuse types?

2434

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What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?

1971

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Why the magneti fields are not passes from southpole to north pole

2174

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explain working principle of earth leakage relay

3765

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