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: Intense sunlight at noon Both the heating effect of current and hysteresis loss The heating effect of current alone Hysteresis loss alone Intense sunlight at noon Both the heating effect of current and hysteresis loss The heating effect of current alone Hysteresis loss alone ANSWER DOWNLOAD EXAMIANS APP
Physics Decibel is the unit used for Radio wave frequency Speed of light Intensity of heat Intensity of sound Radio wave frequency Speed of light Intensity of heat Intensity of sound ANSWER DOWNLOAD EXAMIANS APP
Physics Metals are good conductors of electricity because: They contain free electrons. They have high melting point. All of these The atoms are lightly packed. They contain free electrons. They have high melting point. All of these The atoms are lightly packed. ANSWER DOWNLOAD EXAMIANS APP
Physics When an atom loses an electron it becomes Negative ion None of these Neutron Positive ion Negative ion None of these Neutron Positive ion ANSWER DOWNLOAD EXAMIANS APP
Physics A barometer is kept inside a bell jar. Air is slowly pumped out of the jar. The bell jar breaks up The mercury level starts falling The mercury level does not change The mercury level starts rising The bell jar breaks up The mercury level starts falling The mercury level does not change The mercury level starts rising ANSWER DOWNLOAD EXAMIANS APP
Physics Anemometer is used to measure Wind velocity Wind direction Wind speed and time Pressure gradient Wind velocity Wind direction Wind speed and time Pressure gradient ANSWER DOWNLOAD EXAMIANS APP
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