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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.
What is the means in which light waves travel? Ans: Light is the only type of wave that doesn't require a medium. Confirmation that light will travel through vacuum is the
A figure separated into squares, each of size 1 mm 2 is being viewed at a distance of 9cm by a magnifying lens of local length 10cm, held close to the eye. (i) Illustrate a ray
Properties of Electromagnetic spectrum: A spectrum can be divided into 3 regions. They are UV region, Visible region and IR region. Monochromatic light is a light which consi
Conventional Current: Earlier scientists had no knowledge of the concept of electron, so the developed the convention, still in use, , that the direction of current is for appo
Length contraction
a) A charge of 3X10 -4 Coulomb at P (1, 2, 3) and a charge of -10 -4 Coulomb at N (2, 0, 5) in a vacuum. We desire to measure the force exerted on second charge beacuse of firs
Question 1. Discuss the general guidelines to be followed for whole body CCT 2. Describe pitch and image quality in MSCT 3. List the advantages of SCT in pediatrics. Expl
When were foundations of quantum mechanics established? Foundations of quantum mechanics : The quantum mechanics foundations were established throughout the first half of th
Give at least two differences between optical diffraction and optical interference phenomena.
Draw the v-t graph of an automobile that accelerates uniformly from rest at t = 0.00 s and covers a distance of 180.0 m in 12.0 s.
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