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What is an ideal transformer?
what is the difference between oil surge relay and buchholz relay.
working principle of oil startar
what is the major difference between LIBBP & HIBBP.. which one is most preferable..
How is the gain affected by the introduction of feedback in a control system.
how to calculate the torque of a motor?
What is the tube exial fan?
how flow current in 220 kv line to line
which is better to use svc or synchronous condenser why ?
harmonics filter
What are the types of piano switches?
Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com
WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?
Approach of a cooling tower is the difference between temperatures of what factors?
how to find the torque of the single phase synchronous motor by doing an experiment
