ME6301 Engineering Thermodynamics, Second year, Department of Mechanical Engineering, first and second Units Questions.

ME6301 Engineering Thermodynamics

Second year, Department of Mechanical Engineering

First and second Units Questions.

Answer ALL Questions

PART A – (5 x 2 = 10 Marks)

1.      Define first law of thermodynamics?

2.      What do you understand by reversible process and irreversible process?

3.      define change in entropy?

4.      Define specific gravity?

5.      Define density?

6.      Types of thermodynamic system?

7.      Types of thermodynamic process?

8.      State quasi static process?

9.      State zeroth law of thermodynamics?

10.  Derive characteristic gas equation?

PART – B( 5×13=80 Marks)

Answer all questions

1.derive constant volume process?

2.derive constant pressure process?

3.derive constant temperature process?

4.write down the thermodynamic properties?

      5.a mass of 15kg 0f air in a piston cylinder device is heated from 25⁰c to 90⁰c by passing through a resistance heater        inside the cylinder. The pressure inside the cylinder is held constant at 300kpa during the process and a heat loss of 60kj occurs. Determine the electrical energy supplied kw-hr and change in internal energy.

PART – C( 5×15=80 Marks)

Answer all questions

       1.In a vessal 10kg 0f 0₂ is heated in a reversible non flow constant pressure process that the pressure of 0₂ is increased two  times that of initial value. The initial temperature is 20⁰c. calculate the final temperature,change in internal energy,change in enthalpyand heat transfer.r=o.259kj/kgk andc_v=0.625kj/kgk for 0_2.