last week we did the REF relay test by closing single pole
(R phase) of CB and apply 380V at the primary of delta
transformer. we get 33A at the primary of the R phase star
end. but we get 380A at both R an B in delta side. how and why?
explain me how a power factor is improved by adding a capacitor?what capacitor do to improve it?in simple words and in detail?thx
what is the function of conservater in transformer
our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.
Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.
what is the function of NAT & NAC contacts in breaker control switch (TNC)??
Explain what is CBCT.
Is it required to use 2 nos of body earthings to any machine though if we use TP with E supply is provided to Machine?
What is the megger value for ht
Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.
what is the voltage between earth to neutral in lift.
What about Reactive power.and role of that one?
How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)