When we use 3 terminal resistor?
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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 .....
How to decide DO set rating of Transformer?
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1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?
Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.
What will be the change in its efficiency and other parameters of a ONAN transformer if it changed to ONAF transformer ?
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Can any one explain me about 2 phase motors ?