Water, initially a saturated liquid at 140 oC, is contained in a piston-cylinder assembly. Thewater is heated to the corresponding saturated vapor state in an internally reversible process atconstant temperature and pressure. For a dead state at To= 20 °C and po= 1 bar, determine in kJ/kg:

(a) The change in exergy
(b) The exergy transfer accompanying heat
(c) The exergy transfer accompanying work
(d) The exergy destruction

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Fluids at rest possess no flow energy. a)- true b)- false

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