Initially there are 3 [kg) of gas at a pressure of 200 [kpa] and specific volume of 1.5 [m3/kgl contained within a piston cylinder assembly. the gas undergoes a polytropio process for which py2-constant until the specific volume is 1.0 (m3/kgl and the specific internal energy decreases by 150 [kj/kg). find the amount of heat transfer between the system and surroundings in [kj].

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.

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

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