how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????

0 Answers   Vatika,

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If the rotor pf of a 3 phase induction motor is .866, then what is the phase displacement between stator and rotor magnetic field 1)30,2)120,3)150,4)90 please justify....

2 Answers   GATE,

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what is the different between surgearrester and lighting arrester

4 Answers   HPCL,

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usually why bettery voltage are 1.5V, even if you open a 9V battery there are six 1.5V batteries in series. is it not possible to increase this voltage other than putting in series

1 Answers  

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what is the difference between 11kv and 13.8 kv? why we can't used one of these 2 sources?

2 Answers  

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what do you mean by leading power factor & lagging power factor

13 Answers   Suzlon,

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What is an automatic controller?

0 Answers  

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What is kirchoff ’s current law (kcl)?

0 Answers  

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sir, What is the purpose in Generating power plant is operated Lagging PF and Above 0.9 lag PF?

3 Answers  

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why motors are rated in HP?

3 Answers   HCL, ncpl,

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What should be cable size for 75KVA 380/220 3ph transformer

3 Answers  

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we have taken HV test of 2.5 k and Megger test on 11 kv HT cable.here it shows no fault but when we are charging the same cable with 11 kv supply why the VCB 11 kv gets tripped can anybody define the possible cause of fault ?

4 Answers   MAHINDRA,

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