when we see the lube oil grade its 15w/40 or 20w/40 in this what is W Explain breifly

1 Answers  

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A 150KW 440V motor is need to replace in the field instead of faulty one. what are the main parameter should I need to check?

1 Answers  

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How to Calculate Stc Rating of an indoor type VCB Panel? What is a full form of STC?

1 Answers   ABB,

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what is mean by hormonics & surge? and it's effects?

1 Answers   TCS,

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hello! can anyone explain to me how a 3 speeds table fan work? what are the factors that are controlling the speed of a normal table fan? Is it by varying the voltage or changing the magnetic field? would appreciate your reply :) thx in advance.

2 Answers  

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what is the basic difference between capacitor and condenser ?

17 Answers   ABB, Essar,

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Why Parallel operation of two Transformer are Required?

6 Answers  

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As load in a transformer increases, mutual flux linkage in core= A increases B decreases C not change D first increase then decrease

2 Answers  

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what will happen if field winding of Synchronous generators given ac supply

4 Answers  

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oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer safe to be operated . The working voltage is 11 kv

2 Answers  

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two transformers of the same type, using the same grade of iron and conducting material, are designed to work at same flux and current densities, but the linear dimension of one are two times of the other in all respects. The ration of kVA of the two transformer closely equal to................? options: 16, 8, 4, 2

2 Answers   Vizag Steel,

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what is gridrotor resistance starter

0 Answers  

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