Elements of mechanical engineering
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- What do you understand by thermodynamic equilibrium?
- What is first law of thermodynamics?
- Distinguish between non-flow and flow processes.
- State the Classius statement of second law of thermodynamics.
- What is Classius inequality?
- Draw p-v and T-S diagram for the otto cycle.
- Define mechanical advantages and velocity ratio.
- Differentiate between mechanism and machines.
- What is thermal stress?
- What is meant by hardness of a material?
- Explain, the difference between temperature, heat and internal energy.
- State the basic assumptions of steady flow energy equation.
- Why does the enthalpy of an ideal gas depends upon temperature only?
- State Carnot theorem for an engine and a refrigerator.
- How the Second law of thermodynamics overcomes the limitation of First law?
- What is function of crank shaft and flywheel in an IC engine?
- What is air standard efficiency? Write its expression for diesel cycle.
- What is mild steel? How is it different from cast iron and wrought iron?
- How does stainless steel become stainless?
- Define centre of gravity and centroid.
- What is a quasi-static process?
- Define internal energy.
- Give the representation of throttling process on P-V chart.
- What is a cyclic heat engine?
- Give the Kelvin-Plank statement of the second law.
- Define the COP of a refrigerator.
- What is an air standard cycle?
- State the four processes of the Otto cycle.
- Differentiate between kinematic chain and mechanism.
- Define the term resilience.
- Define property and mention its main characteristic in relation to a cyclic process.
- Define specific heat. Why there are two specific heats for gases?
- Name and state the property introduced by the first law of thermodynamics.
- Show that the work done in a steady flow process is given by � ∫ vdp .
- Explain the concept of Clausius Inequality.
- Comment on the statement, �The entropy of the universe tends to be maximum�.
- Define the terms available energy and unavailable energy.
- How IC engines are classified?
- Give the position of centroid of a triangle and semicircle.
- Give composition and uses of high carbon steel and high speed steel.
- What are open and closed systems?
- Name the few extrinsic properties.
- Define enthalpy.
- Write the SFEE for centrifugal pump.
- Draw the PV diagram for adiabatic process.
- Draw the TS diagram for Otto cycle.
- Define link.
- What is velocity ratio?
- Define poisson's ratio.
- Define modulus of rigidity.
- What is Thermodynamics? (b) (c) (d) (e) (f) (g) (h) (i) (j)
- Define Energy.
- Draw the PV and TS diagrams for isochoric process.
- Define specific heats of gases.
- What is Polytropic Process?
- Define Entropy.
- Draw the PV and TS diagram of Otto cycle.
- What is Polymersiation?
- Define Stress And Strain.
- Define Moment of Inertia.
- What is closed system ? (b) (c) (d) (e) (f) (g) (h) (i) (j)
- What are path properties?
- Define internal energy?
- Write the steady flow energy equation for compressor?
- Define isobaric process?
- What is the c.o.p. for heat pump?
- Draw the PV and TS diagram for Otto cycle?
- What are inversions?
- What is stress?
- Define possion�s ratio?