I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

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How much sq,mm cable need for 800 amps load

2 Answers  

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How to test the thyresitor or SCR by multmeter?

5 Answers   ABB,

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The error in a single phase energy meter where pressure coil lags behind applied voltage by 88 degrees and pf is 1) upf 2).5lag

1 Answers   GATE,

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why booster transformer is used in sumpners test conducted on transformer????

0 Answers   Cooper,

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In synchronous motor, how the field current is related to armature current..i know its inversely proportional..but concept wise...i was nt clear....pls help me...

0 Answers   Siemens,

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How is the Depth of Stator Slot being calculated for Synchronous Generator?

2 Answers  

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For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation

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3 ph motor connected in star delta starter. when we start the motor it run in star but when in is going in delta it trips the main incoming supply. why?

3 Answers   Bajaj Hindusthan,

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what are the problems are there if power factor is leading

3 Answers   NTPC,

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how dg's working of 1000kva.

1 Answers  

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why transmition and distribution and genaration of voltage in multible of 11 means 220v,440v,11kv,22kv,,,...so on

3 Answers  

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