why we use crushed stone in switch yard?

3 Answers  

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How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.

1 Answers   HAL,

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i have 3, 75hp motors and 10, 15 hp motors....and to run this motors continously with a generator how much rating(kva) of generator will suiteble....?

2 Answers  

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A 3 phase motor, 440 voltage, induction motor. If we take out rotor from motor and if we give supply 440 volt to stator then what happens?????

20 Answers  

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How to measure power in 2 or 4 or n phase circuit? Please give me a formula.

0 Answers  

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if three phase supply is given to single phase transformer, what will happen?

3 Answers  

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how we identify AC or DC machine at the time of seeing, with out use of name plate?

4 Answers  

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what is the difference between UPS and INVERTER?

5 Answers   Techno Engineering,

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What is the better way of passing 400 amp from sending end to receiving end ? By overhead line or underground cable and why ? if underground cable then how much depth require ?

1 Answers   Aditya Birla, HCL,

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Pl. brief about break-down maintenance of machine tool.

0 Answers  

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how does we calculate the capacity of battery

1 Answers   MTS,

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A system having the charactristic eqation (s+1)(s+2)(s-3)=0 is (a)stable (b)unstable (c)marginally stable (d)critically stale

1 Answers  

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