• Attempt any five questions.
• All questions carry equal marks.
Classify engineering materials. What do you mean by alloys? Write some applications of alloys.
Define the following Mechanical properties:
i) Toughness,
ii) Brittleness,
iii) Tensile strength,
iv) Ductility.
Describe the construction and use of sine bar. How will you measure taper of a job with the help of a sine bar.
Describe the procedure of a tensile test. Explain the stress-strain curve for a ductile material.
With a neat diagram explain the main parts of a drilling machine? Explain any two operations performed on drilling machine.
What is the basic principle of turbine? Classify various types of turbines according to type of energy, direction of flow head and specific speed.
Explain working of a thermocouple and radiation pyrometer with neat sketches.
The water is flowing through a pipe having diameters 25cm and 10cm at section 1 and 2 respectively the rate of flow of water through the pipe is 30lit/sec. Section 1 is 10m above the ground and section 2 is 2m above the ground. If pressure at section 1 is 40N/cm², find the pressure at section 2.
Describe the construction and working principle of the pelton wheel?
What is constant volume process? Derive expressions for the work done, change in internal energy heat transfer and change in enthalpy.
Define internal energy and prove that energy is a property of a system?
State the first law of thermodynamics for a closed system undergoing a cyclic process and non-cyclic process.
Explain the structure and working of two stroke diesel engine with a neat sketch?
With the help of a neat sketch describe the construction and working of a steam engine?
Write short note on any three:
i) Newton's law of viscosity
ii) Zeroth law of thermodynamics
iii) Micrometer
iv) Centrifugal compressor
