Usually it is a machine for reducing the temperature of the air inside a house or car by using a heat-pump that works on the same principle as a refrigerator. It just makes your house a big refrigerator that you sit inside.
transformer works induction principle
transformer works induction principle
Bernoullis principle
archimedes' principle
motor works on the principle of mutual induction.
insurance works on the principle of indemnity, law of large numbers, principles of utmost faith etc.
it works on the electromagnetic principle the conductor cuts the magnetic field which produces induces emf for the flow of current
the principle on which an electromagnetic crane works is electromagnetic induction
it works on the principle of refraction
A jet engine works under the principle of force versus thrust.
An evaporator in a refrigerator system works by absorbing heat from inside the refrigerator, causing the refrigerant inside the coils to evaporate into a gas. This process cools the interior of the refrigerator. The evaporator coils are where the evaporation of the refrigerant occurs, and the circulation of air inside the refrigerator helps to transfer the heat from the interior to the coils.