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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, unity power factor
(ii) 0.8 full load, unity power factor
(iii) half full load, 0.8 power factor.
Suppose that iron losses are 200Wand the full load copper loss is 300W.
Give the graphical representation of the end on view of plane polarized light and unpolarized light.
Explain the types of polymorphism In terms of thermodynamics, there are two kinds of polymorphism. For a monotropic system, a plot of the free energy of the various polymorphs
Explain quasi-static isothermal expansion A method is reversible only if it is quasi-static and non dissipative. E.g. A quasi-static isothermal expansion of an ideal gas
Describe how the laser transitions are arisen. The given energy level diagram could describe how the laser transitions arise. Collisions in between the He atoms and Ne
Right-hand rule: A trick for right-handed coordinate systems to find out which way the cross product of two 3-vectors will be directed. There are few forms of this rule, and t
what is radiation
What are capacitors used for in induction coils
Can an electron be obtained (or come out) from the nucleus? Yes, electron having energy higher than the ordinary atomic electron might be come out of the nucleus because of be
Explain about the term spatial coherence of Laser. Spatial coherence: This coherence is a measure of the correlation among the phases of a light wave at several points’ tran
Third Harmonic- Standing Waves on a String There are a variety of patterns that could be generates through vibrations inside slinky, a string, or rope. Each pattern corresponds
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