In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.

0 Answers   PPIL,

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what is the function of series reactor

3 Answers   Adhunik, INOX, RMSI,

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Whata are the types of Cables?

0 Answers  

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A synchronous motor is operating at a leading power factor .if the applied voltage is decreases ,(the excitation remains constant ) ,the motor current a)increases b) decreases c)remains same d) none of these

2 Answers  

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if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer

0 Answers  

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what its mean 'inverter based technology' ? if we talk about refrigerators, splits ACs etc how it helps to produce & keep more coolness and chilled atmosphere ?

1 Answers  

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What are the different lines and what are the different types of losses occur on them?

2 Answers  

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what will be the motor terminal box connection arrangement (star or delta). on what basis it decided?

3 Answers  

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What is relation bet kvar & microfarad

2 Answers  

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How do you select a cable size(cu and Al) for a particular load

6 Answers   Pepsi,

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why transformer are rated in KVA not in watt?

7 Answers   DMRC, L&T, TCS,

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what is the advantages of Lighting transformer?.. is it possible to reduce the power consumption ?.

6 Answers   Lucas TVS,

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