What is the major differences between RCCB & ELCB? If we use ELCB of less sensitivity why does it trip often and can we control it from tripping?

1 Answers  

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iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.

0 Answers  

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Explain the experiment on ward leonard method of a speed control on a dc shunt motor with an suitable circuit diagram.

0 Answers  

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what is the purpose of commutator in DC motor?

3 Answers  

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if we convert watt into kva,which one formula use by us,pls tell me?

16 Answers   ABB,

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what is the formulae for selcting capacitor bank to increas pf

3 Answers  

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what will happen if dc motor given ac supply

11 Answers   Mahaveer,

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why transformer is rated in KVA ?

5 Answers  

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How Can we calculate current carrieng capacity of Copper Bus-Bars and Alluminium Bus-bar

2 Answers  

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what is tertiary winding in transformer?What is its purpose?

18 Answers   Bhel,

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How does an oscillator differ from an amplifier?

0 Answers  

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why the inserting resistance in wound rotor induction motor decrease the starting current and increase the starting torque

2 Answers  

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