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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.
working principle of a prism
What are the types of compound pendulum? ?
Plane and The Package Suppose a plane moving along with a constant speed at an elevated height above the Earth's surface. Within the course of its flight, the plane drops a pac
The fraction of vacancy sites in a metal is 1X10 -10 at 500 0 C. What will be the fraction of vacancy sites at double the temperature?
Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive i
Part A) Infra-Red (IR) Detectors: An IR detector has an impedance of Z= (400+j200) ? . . During design tests the detector current is measured as 4 µA. What is
A non-uniform rod AB has a mass M and length 2l.The mass per unit lengthof the rod is mx at a point of the rod distant x from A. find the moment of inertia of this rod about an axi
An object is placed at a distance of 0.12m from a convex lens forms an image at a distance of 0.18m. Determine the magnification produced.
Interaction of X-rays With Matter Elaborating the 3 principle modes through which X-rays interact along with matter. Photoelectric effect, Pair Production Compton Effect,. Sel
The dimentional formula of plank;s constant ML 2 T -1
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