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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.
Materials which can be magnetized are called magnetic materials. When magnetized, such materials create a magnetic field around them. Some of the significant features of magnetic m
It is the area or region around the material where magnetic properties can be found is called as “magnetic field”.
Ammeters : Ammeters are used to measure current flow, as such they need to be inserted in series with the circuit under test so that the current to be measured flows through th
FRAME OF REFERENCE: "A set of reference axis needed to locate the position of an object in space is known as a frame of reference"
Newton's Corpuscular Theory: Newton's corpuscular theory of light states that 1. Light is emitted form of tiny particles is known as corpuscles. 2. The corpuscles travel
Illustrate the graphs showing variation of inductive reactance and Capacitive reactance with frequency of applied a.c. source.
The boom DF and the column DE have a uniform weight of P55 N/m and the chain and load at F is P56 kN. Determine the Shear Force in kN rounded to 1 DP and the Bending Moment in kN.
derive the triangle law of vector
A locus formed by joining the points which are at the equal distance from the source....is called wavefront...
hearts observation
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