MICOM P122 OC/EF RELAY HAVE HARMONIC RESTRAIN OR NOT?

1 Answers  

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why transformers are sometimes kept on concrete benches..?

2 Answers  

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Which of the following alternatives will be cheaper (1) A 100 h.p AC, 3-phase motor (2) Four motors of 25 h.p each (3) Five motors of 20 h.p each (4) 10 motors of 10 h.p each explain

0 Answers  

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1)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?

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Is there is any hazard to insulation of 3hp motor 5 KV megger is used for it?

1 Answers  

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why do you give the dc supply to field of alternator

3 Answers  

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what is meant by vector group of a transformer? How can it be derived?

0 Answers  

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Why to keep capacitor bank off while generator running.

0 Answers   GIT,

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What are the different parts of Alternator and how it works?

1 Answers  

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why transformer does not obey ohm law?

27 Answers  

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why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

6 Answers  

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How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

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