Basic Mechanical Engineering (3110006)

Discuss Closed, Open and Isolated Thermodynamic system with neat sketch.

Define the terms: Hardness, Toughness, Ductility, Elasticity.

Derive an expression for internal energy for a closed system.

Distinguish between coupling and clutch.

Explain equivalent evaporation and factor of evaporation.

The heat transfer from a heat reservoir is proportional to its temperature: Justify by deriving equation.

Explain construction and working of centrifugal pump with a neat sketch.

Explain the construction and function of Steam Trap with neat sketch.

Write the uses of Steam Tables.

1.5kg of steam at a pressure of 10bar and temperature of 250°C is expanded until the pressure becomes 2.8bar. The dryness fraction of steam is then 0.9. Calculate change in Internal Energy.

List different mountings of boiler and explain any one in brief.

The efficiency of Otto cycle is a function of compression ratio: Prove it.

A petrol engine with a stroke length of $200 \mathrm{mm}$ and diameter of $150 \mathrm{mm}$ has a clearance volume of $7 \times {10}^5 {\mathrm{mm}}^3$. If the indicted thermal efficiency is $0.30$, find the relation efficiency. If the effective pressure is $5 \mathrm{bar}$ and engine runs at $1000 \mathrm{rpm}$. Find the IP of the engine. Take $\mathrm{\gamma } = 1.4$.

Discuss with neat sketch Diaphragm pump.

Distinguish between Reciprocating and Rotary Compressor.