Answer / subhendu

Normally by thumb rule we can take, for Al cable it is 1.5 times(Amp) of its sq mm size, and in copper cable it is 2.5 times .

what is maximum or Threshold value of current 7 voltage that a common man can withstand

1 Answers  

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Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

0 Answers  

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we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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Why power factor should not be in leading (capacitive) mode of any load.

3 Answers   GE,

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explain the operating principles of CVT & RVT

2 Answers  

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Why do we use series motor to start our car?

2 Answers  

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How to choose the vector group for the step up and step down transformers??? Tell me the which vector group is suitable for step up and step down transformers and whats the reason to choose and whats the benefits???

0 Answers   L&T,

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How many gap between finger contact in a.c.b. and v.cb.?

0 Answers  

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What is the problem, if a circuit breaker is not closing.

4 Answers   KSEB, L&T, Siemens,

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1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly dc supply is given to field winding of syn. motor and armature winding of dc motor, they are safe. (Remember both windings inductive nature) what is the reason behind that?

2 Answers  

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What are the voltage values for LT,HT,EHT and other voltages??

22 Answers   INEL, MNC,

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if name plate detals of a motor or any other is missing then how to find it

1 Answers  

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