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: The heating effect of current alone Hysteresis loss alone Both the heating effect of current and hysteresis loss Intense sunlight at noon The heating effect of current alone Hysteresis loss alone Both the heating effect of current and hysteresis loss Intense sunlight at noon ANSWER DOWNLOAD EXAMIANS APP
Physics An image formed by a plane mirror, that cannot be obtained on a screen is called ________ Inverted image Real image Erect image Virtual image Inverted image Real image Erect image Virtual image ANSWER DOWNLOAD EXAMIANS APP
Physics If both the mass and the velocity of a body is increased to twice of their magnitude, the kinetic energy will increase by 2 times 8 times 16 times 4 times 2 times 8 times 16 times 4 times ANSWER DOWNLOAD EXAMIANS APP
Physics Time of exposure required for taking photograph of an object depends upon the Skill of photographer Proximity of object Brightness of the object Size of the object Skill of photographer Proximity of object Brightness of the object Size of the object ANSWER DOWNLOAD EXAMIANS APP
Physics When milk is churned, the cream separates from it due to: Gravitational force Frictional force Viscous forces Centrifugal force Gravitational force Frictional force Viscous forces Centrifugal force ANSWER DOWNLOAD EXAMIANS APP
Physics A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat? Conduction and convection only Conduction and radiation only Conduction, convection and radiation Convection and radiation only Conduction and convection only Conduction and radiation only Conduction, convection and radiation Convection and radiation only ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS