Answer / prakash

L & T
Salzer India

Answer / k.prakashchandra

Recom,Mumbai and Switron,Nasik.It may be ACB or something
else, ask for control switches for CBs with current rating.

Answer / shanthkumar

i think larsen and toubro(L & T)

a bulb of 100W and anather bulb of 200W , rated supply voltage 230v.when supply voltage is reduced to 100v,which bulb will give more light? and why with calculation?

12 Answers  

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Difference between copper earthing & aluminium earthing?

2 Answers  

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What is the role of a Production Engg in a Industry?????

1 Answers  

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why using transformer and thyristor switch in 3 phase apfc panel

0 Answers   Reliance,

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During he starting up of the motor, the upstream's MCCB (350A) always trips due to the UVT relay activated. Can Star-delta starter use for a 20kW Motor (For a powder mixer machine) cause voltage-dip in the supply line voltage? If so, what are the recommended solution to eliminate/reduce the transient voltage dip in the line voltage?

4 Answers  

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why a single phase induction motor has poor power factor

0 Answers  

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

0 Answers   Jubail O&M,

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1.where in India the maximum transmission voltage is operated? 2.what the methods are used to cool down the transformer?give the specific ratings of the transformer & specific cooling process. 3.how zero & negative sequence reactances are formed in a rotating machine when fault occur in the system?

2 Answers   IES,

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Transformer's core is made up of which material and why so?

10 Answers   ABB, NTPC,

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HOW TO CALCULATE S/C,O/C,E/F OF ACB.

0 Answers  

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HOW DISTANCE PROTECTION IS DONE IN EHV TRANSMISSION LINES? WHAT IS THE BASIC TECHNIQ OR FUNDA USED BEHIND THIS ? SPECIALLY EXPLAIN?IMPEDANCE METHOD.

2 Answers   ABB,

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what is the necessity of neutral in 3 phase system?

5 Answers  

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