Acasting weighing 3 tonnes is to be hauled by a winch, along a factory floor at a constant velocity of 10 m/min. i)- if the winch exerts a pull of 10kn determine the coefficient of friction between the casting and the factory floor? ii) if 1 tonne of componentry is now attached to the casting, how much force must be exerted by the winch to move the casting back to position at the same velocity? iii)-if the velocity required to move the casting is reduced to 8 m/min, what pulling force is now required? iv) what power ratings are required

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.

Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.