Interested to Buy Any Domain ? << Click Here >> for more details...
why do we use UPF watt meter in short circuit test of the
transformer and LPF watt meter in open circuit test of the
transformer
- 2 Answers
- 33771 Views
- Bell, TCS, I also Faced
- E-Mail Answers
Answer Posted / abhishek
if you calculate the power factor in the no load test conducted you will get a lower value (.2 to .5). In blocked rotor test or in load test the power factor will be usually higher if you calculate (around 0.7 to 0.8). So we use lpf and upf wattmeter respectively.
| Is This Answer Correct ? | 4 Yes | 7 No |
Post New Answer View All Answers
What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.
what is harmonics? what are the factors it will depend upon
What is PEC??Applications........
how many synchronous motor are there in any power plant
Define non-touching loop.
how to calculate units consumption for a 12 hp motor /hr.
What is principle of Floroscent tube 36watt.
What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer
how to select energy meter? have any calculation?
A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.
Define what is difference between fuse and breaker?
What are the advantage of free wheeling diode in a full wave rectifier?
I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?
what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV
what is feeder bay?
