It is the power required to bring the engine to a stop.
It is torque developed when the brake is applied, measured at the brake shoe.
It is the power developed by an engine and measured at the output shaft.
None of these.
None of these
All the above
It is the thickness of the material at which the radiating material is reduced to its half-life.
It is the one half of the thickness of the material required to reduce radiation entering it.
It is the thickness of the material at which the intensity of radiation entering it is reduced by one half