BT-203 (GS) – Basic Mechanical Engineering
• Attempt any five questions.
• All questions carry equal marks.
a)Unit 1Draw Fe-Fe3C phase diagram and explain the phase transformation reactions in the diagram.
Draw Fe-Fe3C phase diagram and explain the phase transformation reactions in the diagram.
b)Unit 1Define the following Mechanical properties of materials:
i) Strength,
ii) Hardness,
iii) Toughness,
iv) Ductility,
v) Brittleness,
vi) Malleability.
Define the following Mechanical properties of materials:
i) Strength,
ii) Hardness,
iii) Toughness,
iv) Ductility,
v) Brittleness,
vi) Malleability.
a)Unit 1Describe the typical shape of the stress-strain curve for a ductile material. Explain the significance of the yield point and ultimate tensile strength on the stress-strain curve of a ductile material.
Describe the typical shape of the stress-strain curve for a ductile material. Explain the significance of the yield point and ultimate tensile strength on the stress-strain curve of a ductile material.
b)Unit 2State and explain various types of errors in measurements.
State and explain various types of errors in measurements.
a)Unit 2List out various operations performed by Lathe and explain some of them in detail.
List out various operations performed by Lathe and explain some of them in detail.
b)Unit 2List out various Temperature measuring instruments and explain any two with neat diagram.
List out various Temperature measuring instruments and explain any two with neat diagram.
a)Unit 3Describe the working principle of hydraulic pumps. Give classification of pumps with their applications.
Describe the working principle of hydraulic pumps. Give classification of pumps with their applications.
b)Unit 3Derive Bernoulli's equation for incompressible fluids.
Derive Bernoulli's equation for incompressible fluids.
a)Unit 3What is Pascal's law, Explain how Pascal's law is applied in hydraulic systems?
What is Pascal's law, Explain how Pascal's law is applied in hydraulic systems?
b)Unit 4What are the main types of boilers, and how are they classified based on construction and operation?
What are the main types of boilers, and how are they classified based on construction and operation?
a)Unit 4Explain the concept of draught in boiler operation. Discuss the factors influencing the choice between natural and artificial draught systems in boiler installations.
Explain the concept of draught in boiler operation. Discuss the factors influencing the choice between natural and artificial draught systems in boiler installations.
b)Unit 4Explain thermodynamic processes at constant pressure and volume.
Explain thermodynamic processes at constant pressure and volume.
a)Unit 5With a neat sketch, explain the working of Carnot and derive the expression for thermal efficiency.
With a neat sketch, explain the working of Carnot and derive the expression for thermal efficiency.
b)Unit 5Explain the Working principle of compressor with neat sketch.
Explain the Working principle of compressor with neat sketch.
a)Unit 5Explain the working of a 2 stroke petrol engine with neat sketch.
Explain the working of a 2 stroke petrol engine with neat sketch.
b)Unit 2Write short notes on Slip gauge, Sine-bar and Combination set.
Write short notes on Slip gauge, Sine-bar and Combination set.