Answer / limna

it is used to calculate the efficiency and power factor of machines.

Answer / k.prakashchandra

It depicts almost all characteristics

what is post close & pre close of trip circuit supervision relay in circuit breaker control scheme?

2 Answers   ABB, NEK, Power,

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why battery is connected in parallel ?

7 Answers  

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why power factor laggs and leads in case of inductance and capacitance??

1 Answers  

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what is rotatng magnetic field in case of three or multiple phase alternating current machines???

1 Answers   NHPC,

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I HAVE A 1 MVA TRANSFORMER, I WANT TO KNOW THE FAULT LEVEL OF THE SYSTEM ( WHAT IS FAULT LEVEL PLEASE EXPLAIN WITH EXAMPLE)

5 Answers   Alstom,

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

2 Answers   Indian Railways,

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why rating of motor in HP

2 Answers   MSL,

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What are the differences between single phase and three phase?

0 Answers   ABB, Essar,

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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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how commomn gate triggering is given for TRIAC ? other thyristor wont be efffected?

0 Answers   BARC,

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difference between the earth mat and earth grid?

3 Answers  

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in a delta-star with neutral grounding on star side what will happen if one star limb  got opened at star point

1 Answers   NTPC,

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