Answer / pradyumna chandra panda

I would like to ask above question.

Answer / p.yasodha

in a dc we r using a starter because of boosting that means
started a circuit connection but in a ac starter is worked
for high voltage purpose thats why

how much amp MCB is required for 1/2 kva power back up?

2 Answers   Havells,

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1. alternator has full load regulation of 4% when pf of the load is 0.8 lag, 1500 rpm. full load regulation of 1400 rpm for 0.8lag will be ________ ?? 2. torque angle of a sync m/c operating from a constt voltage bus is usually defined as space angle between _______ . 3. method most effective in finding out no load losses in large DC shunt motoris ______ . 4. current carrying capacity of fuse material depends on ______ . 5. coil has res. 10 ohm, inductance 1H. what wil be current after 0.1sec after switching on to a 500V DC SUPPL ? ? 6. effect of phase lag compensation on servo systems ___________ . 7. rotor of a dc machine is usually supported upon ______ . 8. DC motor is preferred to AC motor in which application ?? 9. 3 nos of 10:1 Xmer are connected in Star-Delta to supply a load at 230V.the supply voltage must be ______ . 10. voltage source produces max current in which circuit. 11. cal. power, if current and voltage are out of phase by 90 degree. 12. suitable length of Xmission line of power at 66 KV. 13. Which of the theorm helps in simple computation when the load across a ckt is varying ?? 14. what is the adopted line length for power Xmission of power by cables ??

5 Answers   TATA,

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How much depth we will take in 33kv sub station and why.

0 Answers  

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Why tripping not occur when the transmission breaks? Doesn't we provide earthfault protection for it?

1 Answers  

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what is difference between delta-delta,delta-star transformers ???

3 Answers  

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in the exciter the power is feeded from battry or control or whatever.and we need it in the generators for the stating . do we need it in the shutdown also?i mean the exciter>

2 Answers   Shell,

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what is a drive ?

3 Answers  

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What is the power factor,apparent power,reactive power and formula of power factor.

3 Answers   MNC,

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Why we use cosine angle for calculating power factor not in sine angle ?

4 Answers  

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What is the basic difference between earthing, ground and neutral?

11 Answers   Balco, Cognizant,

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how calculate the electrical load for industry and office

2 Answers  

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In a power system we know that if the generated power is less than the load then the frequency of the system is decreases.So does this mean that total required load is delivered at alower frequency?

1 Answers  

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