Answer Posted / m.kumaran

while the motor runs from rest position the resistance of winding is very low so the motor gets more current.it will damage the motor winding so aviod this we use some starters for limiting the starting current.

What is resistance of 50meters, 16sq.mm, single core copper cable?

1892

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how we can calculate the efficiency of a diesel generator ?

1702

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How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.

1990

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What is the limitation of kirchoffs law?

1133

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What is mason's gain formula?

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i need previous entrence exam papers of nhpc.

2845

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What is order of the system?

1139

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What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

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What is milivolt dop test in Busducts? What is its significance & procedure to do the test?

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How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

1974

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how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable

1608

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Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

2171

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for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

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What is the difference between single point and double point bonding. please kindly detail about bonding of cables.

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what is accuracy ? in any meters , coils accuracy . how can u defined that ?

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