If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

0 Answers  

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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 ?

0 Answers   Reliance,

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can we use transformer for 70 Hz?

6 Answers  

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what is difference between cpp electrical system and refinery electrical system

0 Answers  

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what is MCCB?

8 Answers   NTPC,

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Hot Water System (HWS). Will a 30ma elcb have more nuisance tripping than 100ma elcb

1 Answers   CIMC,

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How to do bus bar short circuit calculation for 230KV/11kv, 60 MVA Substation?

0 Answers   ABB,

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i need to calulate the cable size when watts are mentaind wat z the formula

1 Answers  

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high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

0 Answers  

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What is difference between metal clad & metal enclosed switchgear?

2 Answers  

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Can a transformer designed for a particular voltage and frequency rating be used for different set of mentioned ratings? Assume that the winding does not get burnt because of overheating at higher voltage. If yes, then under which constraint it is possible?

1 Answers  

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

0 Answers  

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