how we can check that any motor is faulty may be single phase or three phase?

2 Answers   MAHINDRA,

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Frequency in the control system represents? Continuous system in time domain ? In frequency domain?

1 Answers   CCP,

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how does high earth to neutral voltage affects electronic circuit?

0 Answers  

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What are the Steps for Testing of 20MVA (make:-CGL) Transformer? How many Test we have to do?

2 Answers   BSL,

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what is IMPEDENCE? FORMULE?

6 Answers  

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Whar is the KvA rating of 33Kv substation & actual kv rating of power generaating station.

0 Answers  

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what is transient stability analysis means?

0 Answers  

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electrical resistance in human body?please dedails quick. mail.psrinivasan20@yahoo.com

2 Answers   CTS,

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Is it reuired to use house service barcket for 31/2 core 300 Sq.mm cable,if the distance between pole & shop is around 2 mtrs only or can I hang the cable with GI support in air? upto what size of cable GI serrvice btacket is necessary?

1 Answers   HAL,

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

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what is meant by Back emf ?where its occur ?

6 Answers  

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thermal power station operation in general

11 Answers   AJ Square Inc, Jindal, NTPC,

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