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A transformer takes a current of 0.8A when its primary is connected to a 240 volt, 50Hz supply, the secondary being on open circuit. If the power absorbed is 72 watts,
Determine
(a) the iron loss current,
(b) the power factor on no-load, and
(c) the magnetizing current.
The matter consists of one or more basic substances called elements. An element is a substance whose all atoms are alike. Cohesion between atoms arises atoms because of interaction
. Design a 32:1 multiplexer using two 16:1 multiplexers and one OR Gate.
Neutron is a fundamental particle carrying: (1)A charge of +1 unit and a mass of 1 unit (2)No charge and a mass of 1 unit (3)No charge and no mass (4) A charg of -1
As a 10 kilogram mass on the end of a spring passes through its equilibrium position, the kinetic energy of the mass is 20 joules. The speed of the mass is: a) 2.0 meters per
Dirac constant; Planck constant, modified form; hbar A sometimes more convenient form of the Planck constant, explained as hbar = h/(2 pi).
contruction
Q. What percentage of a given radioactive substance will be left after 5 half -life periods? The residual part of radioactive substance = ( ½ ) 5 Therefore the percentage
Q. Illustrate the Newton s laws of motion? Answer:- 1. A body at rest will stay at rest and one in motion will remain in motion until and unless acted upon by an external
Q. What instrument is utilized to measure volume? Answer:- Liquid volume is measured with graduated cylinders, beakers, measuring cups, spoons and the like. For regular ob
What are "Overtones" and "Harmonics" ? How are they build in an open pipe? Derive the mathematical equations for the frequencies of the harmonics produced in an open pipe.
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