An engineer has designed a valve that will regulate water pressure on an automobile engine.

The valve was tested on 110110 engines and the mean pressure was 4.34.3 lbs/square inch.

Assume the standard deviation is known to be 0.90.9.

If the valve was designed to produce a mean pressure of 4.54.5 lbs/square inch, is there sufficient evidence at the 0.050.05 level that the valve performs below the specifications?

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?