Answer / pandiyarajan

motor size are affected by following factor

1.no.of poles
2.voltage value
3.output power

Answer / prodip das

Motor size are affected by following factor

1.Supply voltage
2.Speed
3.Torque

Answer / sivasamy k

output co efficient factor i.e...Co

What size cable (based on voltage drop) is required to supply a 40 A three phase boiler if the wiring system is 75V single insulated cables installed in non-metallic rigid conduit 56m from the main switchboard? Voltage drop in the consumer's mains is 8V.

0 Answers  

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which of the following is the earliest known literary source of ancient india and indeed of mankind

1 Answers  

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Why we generate power at multiple of 11 i.e 11kv,33kv etc.

9 Answers   DTV Solutions, Havells, TCS,

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What is the difference between line drop and percentage line drop?

0 Answers   Suzlon,

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how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage.

1 Answers   FGI, OPS,

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Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?

1 Answers  

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what is meant by neutral compensation factor and where it is used

0 Answers  

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In power plants the reading changes abruptly to give value (MW -25) (MVAR -15) What are the reasons for this? What is the solution?

2 Answers   GE,

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If one ct is reversely connected in Y system what will effect in kwh and kvarh meter?

1 Answers  

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On what principle reluctance motors work?

1 Answers  

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what is the significance of tan&delta and how it performed in power transformer

0 Answers  

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Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1.  H1-H2 = H2-H3 H3-H1 2.  H2-H3 = H3-H1 H1-H2 3.  H3-H1 = H1-H2 H2-H3 For the LV side also: 4.  X1-X0 = X2-X0 X3-X0 5.  X2-X0 = X3-X0 X1-X0 6.  X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0  H2-H0  H3-H0    X0-X1  X0-X2  X0-X3 128.0  119.9  7.2      29.2   13.3   15.8 70.7   128.4  59.2     23.4   22.0   3.6 7.2    120.1  128.1    13.4   29.3   15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?

0 Answers  

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