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A single-phase transformer has a voltage ratio of 6:1 and the h.v.winding is supplied at 540V.
The secondary winding gives a full load current of 30A at a power factor of 0.8 lagging. Neglecting losses,
Find
(a) The rating of the transformer,
(b) The power supplied to the load,
(c) The primary current
Q. Describe the method of measurement of the thickness of a thin transparent mica slit using Fresnel's Bi-prism. Give necessary theory. Draw suitable diagram. Measurement of
The scattering of a photon by an electron is known as Compton Effect. The momentum and energy is preserved. Scattered photon will have less power as compare to incident photon (les
Explain New Terms for Describing Motion As mentioned in the last chapter, the mass of a cannonball is a measure of the amount of matter (in kilograms) that would balance agains
An atom which has lost one electron would be: (1) Negatively charged () Positively charged (3) Electrically neutral (4) Carry double positive charge Ans: Elec
explain electromagnetic induction
James Watt was the first inventor.
If the electrons striking the target eject an electron from the K-shell of the atom, a vacancy is crated in the K-shell. Instantly an electron from one of the outer most shell, say
(UNIFORM VELOCITY) (i) When instantaneous velocity and average velocity of a body are equivalent, then the body moves with uniform velocity. (ii When instantaneous velocity
In a young's double slit interference pattern, the fringe width is 0.1 mm. Determine the fringe width if the wave length of light is increased by 10% and the distance between the s
CELL CAPACITY The amount of electrical energy that a cell can provide from new to the end of its useful voltage on load is called the cell capacity and is quoted in Ampere hour
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