how we calculate the motor rating of pump for water suction ?its any formula for that plz give thank u3 5966
explain how to protect high rise building from the risk of lighting.1 1091
State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp968
What is power factor? How to improve Power factor? draw a circuit diagram showing the connection of power factor improvement equipment to the electrical instillation.1 1583
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 diagram1532
what is load balancing. what maximum load diffence is allowed between phases.1 2695
-What shall be short circuit current of LV switchgear for a 1000 kva, 11.415kv, 3 phase tranformer with 5% reactance.1223
-How do you select cable size for a given load at a given distance from source of supply. How do you find voltage drop.908
-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.1101
-What is leakage current . how much leakage current is allowed.3 8786
why fuse is not used in neutral...12 27799
what is the relationship between horse power and watts9 16787
what is power and what is watts detailed description and formulas2 2714
why 30 ma elcb is used ?why cant 100 ma?3 19565
What is 11 N1 and 12 N2 in single phase Transformer ?
can i use the six sigma method which is used in management area, in state estimation of power systems?
what is Fault level? why it is calculated? how will u decide same for our plant?
Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?
please explain how to do 'pole drop test' on generator?
Why the magneti fields are not passes from southpole to north pole
why actual valve timing diagram is different than ideal valve timing digram of a 4 stroke engine?
What is Instantaneous Earth fault relay,how will work
What is superposition theorem?
Why can't we take NO LOAD TRIAL of motors having V1 mounting??
what is the difference between ups & inverter
how many current required for hypo test
How can we find the breaking capacity of a Load breaker switch (LBS) fed from 11 kv supply??ex:50KA, 26kA etc???detailed step vice answer pls.
Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?
CAN ANYBODY PLEASE TELL ME HOW TO DESIGN A SERIES REACTOR FOR LIMITING SHORT CIRCUIT FAULT CURRENT??