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what is the difference between relay and a contactor.
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Answer Posted / sb
Relay sends information.
Contractor gives a NC or NO path when logic is TRUE.
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Is it a better option to procure screw type air compressor rather than reciprocating air compressor?If so, what is the reason?How should we select an air compressor(100 CFM)? Please mention the important parameters of air compressor.
what will happens if one phase is missing for 33/11kv power transfomer and why?
what is the eight bit unit?
what is the function and use of cable differential protection relay?
Write the force balance equation of ideal dashpot element.
A 100W electric lamp is supplied from a 115V, 60HZ source. The peak instantaneous power dissipated in the lamp filament is
How many types of losses occur in a transformer?
What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?
Leakage current,un balance current which relay using for high voltage transmission?
what are the advantage and dis-advantage of 3 phase 4 wire energy meter?
What is installed in PAC that is control the humidity
anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?
1)we have 1000 cfm Blower,Dia-1Mtr,Velocity of air 94 m/s 2)We have Natural Air velocity 94m/s 3If i Put Wind Mill in natural air ,speed is 94m/s Then it will generate Assume 100kw 4)If i put same wind mill across the Blower,air speed is same 94m/s now the Question is Will it generate 100 kw?
