1.main parts of generator? what is used A-check,B-check,C-
check?
2.what is FM200 system in data centers?
3.difference between pac,ahu?
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what is power load and lighiting load?
What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.
tell me the operation of ELCB. How it detects a fault?
corona happens more in summer or winter?
how to differentiate a mpcb,mcb with a contactor? Explain their working operation
Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?
up to what extwnt of voltage the celing fan works?
how we can calculate 2 phase welding transformer rating or total power?
What is tan delta & PPM in transformer? and whats its IS value?
what is rating providing of contactor,relay,fuse unit for motor output power
What is the permissible value of earth resistance!
What about Reactive power.and role of that one?
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