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why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%
Define delay time.
Explain in brief description about the operation of DG sets.
Dear all, how we select the cable size according to current with or without including different correction factor , is there any direct method for sizing of cable...
why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points
Which motor is 3.3 or 11kV more reliable, in terms of efficeancy,maintenance, reliability.
how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?
explain the types of drives
How it can worked plc based electrical system And which type of software using.
explain the mode of metal iranafer in Co,welding
2. What are the parameters of EHT sub-station?
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?
