A 3 phase motor operating off 415V system is developing 20Kw
at an efficiency of 0.77 and power factor of 0.73.
determine:-
a)the line current.
b)the phase current if winding are delta connected.
c)the phase voltage if winding are star connected.
Answer / v.srinivas
I=P/1.732 X 415 X EFF X PF=49.5(LINE CURRENT)
28.57 AMPS (PHASE CURRENT)
Phase voltage in star connection; 718.78
Is This Answer Correct ? | 0 Yes | 0 No |
how can get electrical c licence.now i am working in spining mill , transformer capacity 2750KVA. SANCTION DEMAND 2250KVA. PLEASE ADVISE ME . MY CONTACT NO 09944226823
What is difference between ON delay and OFF Delay Timer?
when we conduct high voltage testing why milli amp. is required?
Why we choose 400kv,220kv,132kv,66kv,33kv transmission voltages for transmitting power. Why not other voltage levels.
21 Answers College School Exams Tests, HC, HCL, Jaypee, JPMorgan Chase,
why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but in nutral when i check with clamp meter it shows 25 A?
what are problems caused by the pdu in rack server
how to work current transformer and potential transformer
how to enter inverter parameter? without manaual?
Why transformer neutral earthing? What is advantages?
No load test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D rotor reactance
why i can not use thimble on capacitor duty contactor
We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?