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The fan is an electrical appliance using the principles of a motor.

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Why is the velocity of wheel double at the end than in the center?

This is the experience of each particle on the fan blades. They all must complete a full revolution during the same time period. … Also note that there might be other factors involved when "measuring" pain, such as the fan blade shape. …
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Why do we feel cold when we switch on the fan?

The ceiling fan causes this forced convection. … This means that if the surrounding air is colder than your skin temperature, then the fan cools you down, while if the surrounding air is warmer than your skin temperature, then the fan heats you up …
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