Interested to Buy Any Domain ? << Click Here >> for more details...
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.
VECL,
2511What is meant by load angle of an alternator? Upon what factors does the load angle depend?
VECL,
3004How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?
VECL,
2181We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.
2 3751How much ph is maintained of water electrolyte which is used in LRS for 1200 kw slipring induction motor ?
1769Post New Electrical Engineering Questions
How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.
How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current
Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
Why reactors use before incoming of ac vvfd drive?
When we connect the large capacitor bank in series ?
what is load despatching
How to measure power in 2 or 4 or n phase circuit? Please give me a formula.
Give some differences between open loop and closed loop control systems.
how to calculate the power factor when instantaneous voltage and current has harmonics in it ?
how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?
explain with diagram how to protect transformers and substations from over current with help of CT's?
What are root loci?
300m long and 30kw inductive loade 3phase supply how many size cable required
What should be current in the Primary and secondary side of 1000KVA (11KV Supply)Transformer.?
