Answer / mihir

this test is use to find out the losses of the machine.

Answer / a.sudheer kumar

to find the stray losses of dc machine
and pre-determine the efficiency

Answer / aradhya

Retardation test is done to calculate rotor inertia.

Answer / arif

no load rotational can be found by retardation test,moment
of inertia of the machine can also be calculated.

why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?

0 Answers  

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IF we have three 30KW motor, these motors are connected in DOL, star-delta and VFD respectively, what will be the fuse rating for the above three?

7 Answers   DOL, GSK, Ojus,

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why and how voltage sharing in transformer, during magnetic balance test ?

0 Answers   ME,

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WHAT IS THE FORMULA FOR CALCULATING CURRENT RATING(DIRECT IN GROUND OR AIR) OF ARMOURED(XLPE) CABLE OF 4C,16Sqmm?

0 Answers  

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When we need start the motor by method of star delta which size (KW or HP)motor should must be operate in Star Delta Method,

3 Answers  

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What is battery Amphere-hour? How the battery back up time period is calculated?

2 Answers  

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how manyunits consumed by 25 kvar capacitor bank

2 Answers   MRF, Suzuki,

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What is the difference between generator and turbo generator - related to power gereration

1 Answers  

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What is the lockout relay

0 Answers  

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what is the difference between relay, contactor

4 Answers   BRSS, Vishay Intertechnology,

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Explen all type electrical protection ? like O/C,E/F,NPS,VOLTAGE UN BLANCE,CURRENT UN BALANCE,NAGETIVE PHASE SEQ,AND ETC...............electrical Protection

6 Answers   Reliance,

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In directional earth fault protection for generator, one core balance CT is for residual current, what other CT is for, which is placed on neutral?

2 Answers  

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