Basic Mechanical Engineering (BT-203) - Important Questions

Explain the classification of engineering materials, including what alloys are and their applications.

Define important mechanical properties of engineering materials e.g., strength, ductility, toughness, brittleness and tensile strength with examples.

Explain the construction and method of using a sine bar with neat sketch, including measurement of taper/angle of a job.

With a neat diagram explain the main parts of a drilling machine and explain any two operations performed on it.

Explain methods for temperature measurement including working of thermocouple and radiation pyrometer with neat sketches.

Explain the application and measurement process using vernier caliper with neat sketch.

Describe the construction and working principle of a Pelton wheel turbine with neat sketch.

Using continuity and Bernoulli's equation, find the pressure at section 2 of a tapered pipe given diameters, discharge of 30-80 lit/sec, datum heads and pressure at section 1.

Explain the construction and working of a single acting reciprocating pump with neat sketch.

State the first law of thermodynamics for a closed system undergoing cyclic and non-cyclic processes and explain its relation to conservation of energy.

Define thermodynamic system and explain open, closed and isolated systems with examples.

Explain the concept of thermal equilibrium and state the zeroth law of thermodynamics, including its application to temperature measurement.

Explain the structure and working of a four-stroke diesel engine with a neat sketch.

Explain the working of the Diesel cycle with P-V and T-S diagrams and derive the expression for its thermal efficiency.

Write short notes on any two: a) Alloy steels and their applications b) Necessity of alloying and difference between alloy steels and carbon steels c) Classification of cast irons and applications.