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Synchronous Condensers: A synchronous motor takes a leading current when over-excited and thus behaves as a capacitor. An over-excited synchronous motor running on no load is called as synchronous condenser. When such a machine is linked in parallel with the supply, it takes a leading current which partly neutralises the lagging reactive component of the load. Therefore the power factor is improved.
Q. Is air travel time the similar whether or not the plane is flying with or against the rotation of the Earth? Answer:- All air travel gets the earth's rotation into acco
Electromagnetism: A temporary magnet formed by winding a coil of insulated copper wire around a piece of shift iron is known as electromagnet. When current is passed it behaves
a. Describe the radiation resistance of an antenna. b. With sketch, explain the feed mechanism of a parabolic reflector c. Explain the given term:- (i) Horn Antenna (ii
how Michelson interferometer can be used to measure the wavelength of sodium light.
Define the function of photodetectors in fibre optic communication system. Photo-detectors: At the receiver end, conversion of optical signal into analog signal is being don
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A block of mass 2 kg is pulled up on a smooth incline making angle 30 degrees with horizontal . if block moves with an acceleration of 1 m/s2 , find a) Power delivered by the pull
why +ve half clip below than v_0.7v
What are eddy currents? State how their effect is decreased in transformers. (b) Verify the ef?ciency of a 15 kVA transformer for the following conditions: (i) full load, un
When Temperature increases,intensity increases,but in some time intensity decreases,Why?
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