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: Both the heating effect of current and hysteresis loss Intense sunlight at noon Hysteresis loss alone The heating effect of current alone Both the heating effect of current and hysteresis loss Intense sunlight at noon Hysteresis loss alone The heating effect of current alone ANSWER DOWNLOAD EXAMIANS APP
Physics What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel? 12 36 24 50 12 36 24 50 ANSWER DOWNLOAD EXAMIANS APP
Physics The atmospheric air is held to the Earth by : Rotation of the Earth Gravity Winds Clouds Rotation of the Earth Gravity Winds Clouds ANSWER DOWNLOAD EXAMIANS APP
Physics Find the current (in A) when a charge of 500 Coulomb flows in 25 seconds. 40 20 6250 12500 40 20 6250 12500 ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is an example of simple harmonic motion? Simple pendulum motion Ball bouncing on floor Motion of a ceiling fan Earth spinning on its axis Simple pendulum motion Ball bouncing on floor Motion of a ceiling fan Earth spinning on its axis ANSWER DOWNLOAD EXAMIANS APP
Physics The motion of a freely falling body is an example of ________ motion. Non-uniformly accelerated Uniformly accelerated Constant speed Constant velocity Non-uniformly accelerated Uniformly accelerated Constant speed Constant velocity ANSWER DOWNLOAD EXAMIANS APP
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