FR = 430 N 30°

3. During tug of war, the bicep muscle generated 4k N force that was perpendicular to the forearm bone. The bicep muscle was attached 4 cm from the elbow joint as shown in figure below. (a) Compute the bending moment at section a-a (b) If a circular solid bone with allowable compressive stress of 130 MPa, what is the minimum permissible radius of the bone?

if v=5s where s in meters finf a

What is the brake horsepower of the engine in item above if the mechanical efficiency is 80 %? Ans. 8 hp

6

What size of receiver tank (gal) for a compressor is required if the pneumatic system is used to drive 5 linear cylinders which collectively consume 12 SCFM for 5 minutes? The compressor pressure switch operates between 90 and 110 psi.

b) The bore diameter of each cylinder in a sir-cylinder four-stroke internal combustion engine is 32 mm and the stroke of each piston is 125 mm. During testing, the engine runs at 1450 revolutions per minute (pm) with a pressure-volume indicator diagram showing a mean net area of 2 90 cm' and a diagram length of 0.85 cm. The pressure scale on the indicator diagram is set to 165 kNmper cm Calculate the mean effective pressure (mep) and the indicated power in klowatts (aW) developed by this six-cylinder four-stroke engine. Give your answer to 2 decimal places. c) A hollow connecting rod has an inner diameter of 26.25 mm and is subjected to an axial tensile load of 500 MN. the maximum allowable stress for this hollow rod is 325 KNimm, calculate the minimum thickness of the rod. Give your answer in millimetres (mm) and to 2 decimal places.

A pneumatic system operating at 85 psi comprises a series of pneumatic actuators which consume 2.4 CFM when operating. What is the minimum required CFM from a compressor which produces 120 psi?

1. The car engine has a torque of 0.4 kNm at 2000 rpm (rev/min). What is the power (kW) at this time?

A compressor has a bore of 8 centimeters and a stroke of 10 centimeters.What is the displacement of the compressor?