how to write program by ladder logic in case of PLC operation

3 Answers   Gridco, Sofcon,

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What is Reactance & Impedance? what is diffrence between these?

2 Answers  

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why a single phase motor of same rating takes more amps than the three phase motor? as single phase motor at 230v takes 5amp per HP while 3 p motor takes 2.5amp per hp at 230v.

1 Answers  

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When a capcitor is used on 440 v thenthis is kvar rating 25kvar .my question is that when we use this capcitor  use 480 v &525 volt .how much kvar increase . Plz give my question ans. And give answer with formula .my mail id is rohitashsaini013@gmail.com

1 Answers   Neptune,

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Explain why machinery used on a.c supply is usually rated in KVA instead of KW?

10 Answers   EEE, Mtandt,

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what does the word synchronous mean in 'synchronous machine'

3 Answers  

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what is the use of neutral?

14 Answers   IOCL,

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can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?

0 Answers  

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What is WLD System????

3 Answers   Emerson, HCL, Honeywell, Tata Communications,

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What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

0 Answers  

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What is the size of cable to be used for a Space Heater in UPS 160KVA of carrying 10 Amps current with 240 V ,1 Phase?

3 Answers  

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If more than rated DC voltage appears across trip coil of the breaker, what will happen? e.g. in 110V DC circuit system, if voltage across battery terminal showing 121 V

0 Answers  

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