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what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing
2672draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it
2715- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
2745Post New Electrical Engineering Questions
what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
What is the source of dependent source ?
number of I/O devices in siemense plc
What is PEC??Applications........
Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?
HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?
How we can recongnise the phase displacement of transformer connection between primary & scondary...plzzz explain it with example.........
Why is a synchronous motor always star connected??
what is a reactive power? what is the relation with power factor?
How to megger test 11 kV cable and the acceptance IR value
What is transister define the transister ammiter ,base, colector.
what should be the acceptrd value of winding resistance for 2.5MVA transformer
What do you mean by transformation ratio of instrument transformer?
what is RNG in the DG synchronizing by PLC?
what is the reqirred voltage in HT motor to get full RPM on no load test?
