Answer / k.prakashchandra

For good speed regulation 3 ph motors.Single phase is for
upto 1.5 HP only

Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only.

12 Answers   ACC, JLL, ZETDC,

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am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

0 Answers   L&T,

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What will happen if twice the rated voltage is applied to a DC motor?

4 Answers   Toyota,

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What is the purpose of stand by earth fault protection for transformer ?

0 Answers  

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If a 3 phase transformer is a 500 kva using the formulae 500kva= 500000/433 x 1.732 = 666.71amps does this mean that each phase on the secondary side is 666.71

3 Answers   Saffron,

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why an ac solenoid valve attract the plunger eventhough we interchanges the terminal?will the ploes changes?

1 Answers  

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i want to model paper for section engg.

0 Answers   Infosys, RRB,

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What is the kva?

2 Answers   Makino Auto, SAL Steel Power, Sapphire Group,

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7. Hrc fuse provides best protection against.......

5 Answers   SSC, UGVCL Uttar Gujarat Vij Company Ltd,

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why the electric train touches only one conductor n where is the neutral n it will be running 3-phase or 1-phase?

3 Answers  

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Can I use less voltage cable for neutral, since the voltage of return path is zero ideally?

3 Answers   Vijai Electricals,

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What is 100% protection of generator? Why 100% is not used but 95% is generally used?

0 Answers  

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