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 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 Hysteresis loss alone ANSWER DOWNLOAD EXAMIANS APP
Physics What type of lens is a magnifying glass? Converging Diverging Achromatic Spherical Converging Diverging Achromatic Spherical ANSWER DOWNLOAD EXAMIANS APP
Physics The waveform of a certain signal can be studied by Spectrometer Sonometer Cathode ray oscilloscope P – n junction diode Spectrometer Sonometer Cathode ray oscilloscope P – n junction diode ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following parts of the sunlight makes the solar cooker hot ? Red light Infra red Cosmic rays Ultra violet Red light Infra red Cosmic rays Ultra violet ANSWER DOWNLOAD EXAMIANS APP
Physics Transition ions absorb light in : Ultraviolet region Visible region Infrared region Microwave region Ultraviolet region Visible region Infrared region Microwave region ANSWER DOWNLOAD EXAMIANS APP
Physics Name the process by which bubbles from liquid are formed? Effervescence Surface Energy Degasification Surface Tension Effervescence Surface Energy Degasification Surface Tension ANSWER DOWNLOAD EXAMIANS APP
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