SPPU First Year Engineering (Semester 2)
Basic Mechanical Engineering (BME)
May 2017
Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Solve any one question from Q.1(a,b) &Q.2(a,b)
1(a) Draw neat diagrams of :
i) Ball bearing and
ii) Disc brake.
6 M
1(b) Define the following mechanical properties of material: Strength, Toughness, Hardeness, Creep, Palsticity, and Elasticity.
6 M

2(a) Draw sketches of V belt derive, chain drive and spur gear drive.
6 M
2(b) Compare mechanism and machine (four points). Draw a scehmatic sketch of reciprocating compressor.
6 M

Solve any one question from Q.3(a,b) & Q.4(a,b)
3(a) What is sand casting process? Draw neat sketch of sand casting process setup and explain steps involved in the process.
7 M
3(b) Draw a block diagram of a radial drilling machine and explain tapping operation with sketch.
6 M

4(a) Draw neat sketch of soldering process setup. Explain the process in brief. State application of the process.
6 M
4(b) Draw a block diagram of lathe machine. Explain function of headstock, tailstock and carriage.
7 M

Solve any one question from Q.5(a,b,c) & Q.6(a,b,c)
5(a) State any two statements and limitations of first law of thermodynamics.
4 M
5(b) Draw schematic sketches of :
i) Barometer
ii) U-Tube Manometer
iii) Thermocouple
Iv) Isolated system.
4 M
5(c) A fish freezing plant is to be maintained at -10 degree C. If power required to drive the that plant is 30 KW and COP of refrigeration system is 3. Find:
i) heat sucked (absorbed) form the freezing plant and
ii) heat rejected to the surrounding. Draw sketch of the system.
5 M

6(a) Explain the following:
i) System, surrounding and boundary
ii) Kelvin Plank's statement of second law of thermodynamics.
4 M
6(b) Draw sketches of heat pump and refrigerator system Derive the relation between COP of Heat Pump and COP of Refrigerator.
4 M
6(c) The pressure of kerosene flowing through a pipe is to be measured with simple U-tube mercury manometer. Left arm of U-tube is connected to pipe while right arm of the U-tube is open to atmosphere. Calculate the absolute pressure of the kerosene in pipeline and mercury level in right-arm above datum when kerosene evel in left arm is 60 cm above datum. Draw the sktech of the setup. Given: Atmospheric Pressure = 10m of water column
Gauge Pressure of kerosene = 22kPa
Acceleration due to gravity, g = 9.81 m/s2
Specific gravity of the kerosene = 0.8
Density of mercury = 13600 kg/m3
5 M

Solve any one question from Q.7(a,b) &Q.8(a,b)
7(a) Draw a sketch of wind power plant. Explain energy transfer extraction in the power plant and state its limitations.
6 M
7(b) Draw neat sketch of four stroke cycle spark ignition engine. Compare two stroke and four stroke cycle engines. (Four Imp Points).
6 M

8(a) Draw a sketch of hydro-electric power plant. Explain energy transfer (extraction) in the power plant and state its limitations.
6 M
8(b) Explain construction and working of centrifugal pump.
6 M

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