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Explain Constant voltage system
Constant voltage system: In this process voltage is kept constant but results in very huge charging current in the starting when the back emf of the cells is low and a small current when their back emf enhances on being charged. With this method, time of charging is almost decreased to half. It enhances the capacity by approximately 20% but decreases the efficiency by 10% or so.
Assignment of applications of elastic behaviour of materials
a boy throws a ball of mass 20 kg vertically upwards.it raises to a maximum height of 100 m.at what height will the kinetic energy be reduced to 70%
Waves: A disturbance that travels by a medium is called wave.
what is cyclotron
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