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The shaft of a gearbox is coupled through a No. 60 chain drive, rotating a concrete mixer at 180 rpm clockwise. The drive sprocket has 19 teeth and the sprocket on the mixer has 84 teeth. Determine the speed of the drive sprocket, the chain speed, and the recommended lubrication method.
a refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression cycle between 0.12
Give two advantages of preheating the water in this way and one disadvantage and give two reasons why the presence of any sulphur in the fuel mix would be undesirable.
the adjoining figure illustrates a piston-cylinder arrangement. this cylinder contains helium at 21oc and 1.379 mpa.
The 25-kg bar has a centre of mass at G.If it is supported by a smooth peg at C,a roller at A and cord AB, determine the reactions at these supports.
an undeformed specimen of some alloy has an average grain diameter of 0.04 mm. you are asked to reduce its average
Calculate the exact integration result using Matlab symbolic tools and calculate the errors in calculating work done
natural gas is primarily composed of methane ch4 while coal can be modeled as eicosane c20h42. methane has a heat of
1. a process water with a specific heat capacity of 4.182 k.1 kg-i k-1 flows at a rate of 0.050 kg s-i through a heat
consider a reheat cycle with steam leaving the boiler and entering the turbine at 4 mpa and 400 c . after expanded in
when a force is transferred to another point of the body indicate which of the following quantities remain unchanged
a single stream tube is selected to characterize the air flow past the wing of an aircraft in flight at an altitude of
The elevator E has a mass of 500kg, and the counterweight at A has a mass of 150Kg. if the motor supplies a constant force of 5KN on the cable at B, determine the speed of elevator when t= 3s, starting from rest neglect the mass of pulleys and cab..
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