(Solved): QUESTION 3 a) How would you know that iron (150\deg C) and copper bars (20\deg C) which are brought ...

QUESTION 3 a) How would you know that iron

and copper bars

which are brought into contact in isolated enclosure follows Zeroth Law of Thermodynamics? (2 marks) b) A rigid tank contains

of air at

and

. The air is heated until its pressure is twice the initial value (assume ideal gas behavior). Determine: i) The volume of the tank. (2 marks) ii) The amount of heat transfer. (6 marks) c) Air flows steadily through an adiabatic turbine, entering at

, (at temperature

and speed of

) and leaving at

, (at temperature

and speed of 250

). The inlet area of turbine is

. Determine: i) The mass flow rate of the air. ii) The power output of the turbine.