What happened when the field winding of dc series motor is open?

2 Answers   Bhel,

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WHY WE NEED NEUTRAL FOR 3PH 400 OR 415 VOLTS POWER SUPPLY (4 WIRE SOURCE).

5 Answers  

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why there is a temperature rise at different metal to metal contact at cable lug??suppose cable is aluminium and the lug is copper,than why the temperature rise takes place??

2 Answers   JK Cement,

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How Arc Extinguish in Minimum oil circuit breaker and What is the function of Radial and axial vents of turbulator in Minimum oil circuit Breaker Where these vents are exists.

1 Answers  

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What is fault.?

2 Answers   AngloGold Ashanti, MNC,

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Though transformer consist winding which usually cause reactive power change in both generator and motor but it wont affect reactive power passing through transformer why?

2 Answers   Jindal, Reliance,

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Hai, I am from EEE branch.On feb 17 iam going to write an Exam for hindustan petrolium corporation Ltd.So plz send me the written exam pattern/Q's/interview questions.please mail to yuva_polisetti@yahoo.co.in

0 Answers  

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differentiate between one way two gang switch & two way one gang switch, used in designing the loads of building.

1 Answers  

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What happens if we connect a single phase energy meter in reverse polarity.

0 Answers  

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What is the difference between surge and impulse?

4 Answers  

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the voltage per turn of a primary winding of a transformer is the same as the voltage per turn of the secondary winding of the transformer. why?

8 Answers  

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Can any body explain the operation system of MVWS(May be related to water and fire hydraunt system)?

2 Answers   TATA,

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