what happen if i change the polarity of ac when it is
connected with motor
Answer Posted / sameh el-azab
-if the motor is single phase nothing happens because the ac wave inversed automatically
- if the motor is three phase there will be two case:-
1- if u change two line the motor direction is inversed
2- if you change the three line nothing happens
| Is This Answer Correct ? | 15 Yes | 1 No |
Post New Answer View All Answers
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
How many VSC based HVDC are there in India and the world
If SFU is Switch Fuse Unit, What is the expansion for FSHF in Electrical Engineering?
What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.
who can measure the size of power cable?
A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram
What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP
What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?
derive DC RMS value for half wave rectifier?
why 15 kw motor winding resistance is low then 5 kw motor winding resistance?
how to modify DOL control panel into Delta Y connection?
what reactive how to maintain
State any two nuclear power stations in India, with their generating capacity.
EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.
how to calculate short circuit current for the busbar