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 Both the heating effect of current and hysteresis loss The heating effect of current alone Intense sunlight at noon Hysteresis loss alone Both the heating effect of current and hysteresis loss The heating effect of current alone Intense sunlight at noon ANSWER DOWNLOAD EXAMIANS APP
Physics Sun's heat reaches us by Conduction Reflection Radiation Convection Conduction Reflection Radiation Convection ANSWER DOWNLOAD EXAMIANS APP
Physics In a railway track, two rails are joined end to end with a gap in between them because Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Steel can be saved Accidents due to expansion in summer can be avoided Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Steel can be saved Accidents due to expansion in summer can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics Where are mesons found ? Gamma rays X-rays Laser beam Cosmic rays Gamma rays X-rays Laser beam Cosmic rays ANSWER DOWNLOAD EXAMIANS APP
Physics Transition ions absorb light in : Infrared region Visible region Microwave region Ultraviolet region Infrared region Visible region Microwave region Ultraviolet region ANSWER DOWNLOAD EXAMIANS APP
Physics Light from Sun reaches Earth in approximately 3 minutes 10 minutes 12 minutes 8 minutes 3 minutes 10 minutes 12 minutes 8 minutes ANSWER DOWNLOAD EXAMIANS APP
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