In Swinburne's Test on D.C.machines, why the efficiency is more when the machine runs as generator than when it runs as motor???

6 Answers   College School Exams Tests, GE, MVR, Practical Viva Questions,

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What is the scale analysis for condensor of HVAC system

3 Answers  

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How synchronous motor helps to improve PF? plz explain

1 Answers  

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What is 100% protection of generator? Why 100% is not used but 95% is generally used?

0 Answers  

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Why the voltage n frequency of the incoming generator is kept slightly higher than d grid voltage n frequency while synchronization ?

4 Answers  

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What is the frequency of dc current????

4 Answers   SCS,

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Which has more losses, AC or DC??

4 Answers   Infosys, TATA,

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Which device is provided as backup of Buchholz relay???

2 Answers   Indian Railways,

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what is transient earth voltage

2 Answers  

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what is the principle of switchgear and its function

1 Answers  

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WHERE to use CVT & PT.

11 Answers   Suzuki,

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Please brief what is sinewave

0 Answers   Deccan Cements,

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