Answer / k.prakashchandra

Slip ring motors are also called rotor wound motors and are
of high capacity..With the help of slip rings, star
connected variable resistances are connected in series with
star connected rotor windings to reduce the starting
current and increase the staring torque by improving pf.The
resistances can also control the speed, sacrificing efficiency.

In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

0 Answers   Caterpillar,

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in case of OC+EF relay, how the burden is divided/calculated/shared by the CTs in case of normal (healthy condition) and during fault conditions.? three coils of OC & ef coil is conected in residual connection across the three CTS.

1 Answers  

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WHY THE TRANSFORMER VALUE MEASURES IN KVA INSTEAD OF KW.

4 Answers  

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what is the ideal earth resistance

11 Answers   Amit Enterprises, Enercon,

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For testing 33kv cable hipot testing. How much kv we have to Apply .Give in details.

24 Answers  

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how capacitor control the power factor/

2 Answers   ABB, Apollo,

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funtion of choke

4 Answers   L&T,

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why restricted earth fault protection can not operate for phase faults??as there will be a current in secondary of ct,when a phase fault occurs!

1 Answers   GMR,

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what is the principle of vvvf drive motor

3 Answers  

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Where -48 volt DC use & why?????????

10 Answers   Ericsson, INDUS, Indus Towers, Telecom,

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what is relay type VDG,CDG,VTT ect?

1 Answers   Bhel,

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how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?

0 Answers   LTT,

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