what is the formula for transformer oil?
why we ht line cable size small rather than lt cable.
Is it true that IPT are more accurate than CVT for Measuring purpose?
why we have and use 3 phase not 2 or 4 or other in power system?
what are the standard values for resistances(Megger testing) between L&N, L&E and N&E (L=Live,N=Neutral, E=Earth)?
WAT IS MEANT BY COLD AND HOT START OF A MOTOR?? HOW DOES IT AFFECT A MOTOR'S PERFORMANCE??
flurescent bulb rating is to 230v,50HZ.now flurescent connected 230v,25HZ.whether nreduced frequency will affect the glowing properties of flurescent.
What is C check in a diesel generator and what are parts and what has to be done during the C check
what is the function of conservater in transformer
will a transformer work when pulsating dc id applied to its primary?? what will be the result??
A 50Hz,4-pole,3-phase,star-connected synchronous motor has a synchronous reactance of 12ohmsper phase and negligible armature resistances.the excitation is such as to give an open-circuit voltage of 13.2kilovolt.the motor is connected to 115kilovolt, 50hertz supplying. what maximum load can be the motor torque,line current and power factor?
what is the use of vcb & isolator in substation?
What is a differential amplifier? Also, explain cmrr.
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