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A single-phase transformer has 2000 turns on the primary and 800 turns on the secondary.
Its no-load current is 5A at a power factor of 0.20 lagging.
Assuming the volt drop in the windings is negligible,
Determine the primary current and power factor when the secondary current is 100A at a power factor of 0.85 lagging.
Q. I n a Newton's ring experiment, the wavelength of the light used is 6 × 10 -5 cm and the difference of square of diameters of successive rings are 0.125 cm 3 . What will h
State Ampere's circuital law and obtain it's differential form.
A point is operating simple harmonic motion with a time period 2πs. At its mean position its speed is 0.05 m/s. Calculate its speed when it is at a distance of 0.04 m from the mean
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A student throws a set of keys vertically upward to his fraternity brother, who is in a window 4.40 m above. The brother's outstretched hand catches the keys 1.30 s later. (a) W
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(i) The size examines cannot be operated to derive relations other than product of power functions, for example, s = ut + 1/2 at 2 or y = y 0 cosωt and so on, cannot be derived
what is poission''s equation?Establish poisson''s equation for space distribution of charges.discuss its significance.
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Balmer series (J. Balmer; 1885) An equation that describes the emission spectrum of hydrogen while an electron is jumping to the second orbital; four of the lines are into the
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