Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: Hysteresis loss alone The heating effect of current alone Intense sunlight at noon Both the heating effect of current and hysteresis loss Hysteresis loss alone The heating effect of current alone Intense sunlight at noon Both the heating effect of current and hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Physics Alpha particle is the nucleus of an atom of Hydrogen Lithium Helium Oxygen Hydrogen Lithium Helium Oxygen ANSWER DOWNLOAD EXAMIANS APP
Physics The point where total mass of a body is supposed to be concentrated is known as Centre of mass Centre of motion Centre of gravity Dead centre Centre of mass Centre of motion Centre of gravity Dead centre ANSWER DOWNLOAD EXAMIANS APP
Physics Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water Decreases rapidly Decreases slightly Increases slightly Increases to a great extent Decreases rapidly Decreases slightly Increases slightly Increases to a great extent ANSWER DOWNLOAD EXAMIANS APP
Physics The splitting of different colours of light in a prism is : Reflection of light Diffraction of light Refraction of light Disperson of light Reflection of light Diffraction of light Refraction of light Disperson of light ANSWER DOWNLOAD EXAMIANS APP
Physics The waves used in sonography are Ultrasonic waves Micro waves Sound waves Infra-red waves Ultrasonic waves Micro waves Sound waves Infra-red waves ANSWER DOWNLOAD EXAMIANS APP
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