How to calculate the CFM to TR? What is the Formula

12 Answers   Carrier, Voltas,

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how do find power factor in practically and what it means?

3 Answers  

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how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

0 Answers  

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What is the formula for calculating transformer Efficiency?

2 Answers  

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what is the actual difference betwen constructional details and constructional features?

2 Answers  

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what is the difference between single core,three core,three and half core and four core, and where it can be used ,

1 Answers  

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Showing results for capital, machinery, stock,wages, carriage in words, salaries, factory rent, repairs, fuel and power, buildings, debtors, sales, purchases, creditors, return outwords, return inwords, drawings, discount allowed, discount receivable, office expenses, bills payable, bills receivable, cash in hand, cash at bank, office rent comes under debit or credit

0 Answers  

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what are FM 200 systems? why it is useful for electrical systems ?

3 Answers  

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why frequency meter is connected in parallel in a circuit?

1 Answers   University of Engineering and Technology,

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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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If UG power cable both ends are to be earthed or what? If not why?

0 Answers  

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what will happen if dc machine are supplied by ac source??

2 Answers  

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