The properties of a system, during a reversible constant pressure non- flow process at P=1.6 bar, changes from V,=0.3m'/kg, t;=20°C to
V=0.55m²/kg, tz=260°C. The specific heat of the fluid is given by
Cp=1.5+75/(t+45) kJ/kg°C where t is in °C.
Determine:
i. Heat added/kg
ii. Change in internal energy/kg
iii. Change in enthalpy/kg

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

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.