BT-203 (GS) – Basic Mechanical Engineering
• Attempt any five questions.
• All questions carry equal marks.
a)Unit 1Define Hardness? Explain the Brinell Hardness test method in details?
Define Hardness? Explain the Brinell Hardness test method in details?
b)Unit 1Define the following mechanical properties:
i) Strength,
ii) Ductility.
Define the following mechanical properties:
i) Strength,
ii) Ductility.
a)Unit 1A mild steel specimen with an original diameter of 10 mm and a gauge length of 50 mm was found to have an ultimate load of 60 kN and breaking load of 40 kN. The gauge length at rupture was 55 mm and diameter at rupture cross-section was 8 mm. Determine:
i) The ultimate stress,
ii) Breaking stress,
iii) True breaking stress,
iv) Percentage elongation.
A mild steel specimen with an original diameter of 10 mm and a gauge length of 50 mm was found to have an ultimate load of 60 kN and breaking load of 40 kN. The gauge length at rupture was 55 mm and diameter at rupture cross-section was 8 mm. Determine:
i) The ultimate stress,
ii) Breaking stress,
iii) True breaking stress,
iv) Percentage elongation.
b)Unit 2With a neat sketch, explain the following lathe operations:
i) Facing,
ii) Knurling.
With a neat sketch, explain the following lathe operations:
i) Facing,
ii) Knurling.
a)Unit 2Discuss the application vernier caliper and its method of measurement.
Discuss the application vernier caliper and its method of measurement.
b)Unit 2Explain the method of using Sine Bar with neat sketch.
Explain the method of using Sine Bar with neat sketch.
a)Unit 3The water is flowing through a pipe having diameters 30 cm and 20 cm at two sections 1 and 2, respectively. The rate of flow through the pipe is 80 liters/sec. Section 1 is 8 m above the datum and section 2 is 5 m above the datum. If the pressure at section 1 is 4 bar, find the intensity of pressure at section 2.
The water is flowing through a pipe having diameters 30 cm and 20 cm at two sections 1 and 2, respectively. The rate of flow through the pipe is 80 liters/sec. Section 1 is 8 m above the datum and section 2 is 5 m above the datum. If the pressure at section 1 is 4 bar, find the intensity of pressure at section 2.
b)Unit 3What is priming? Why is it required in a centrifugal pump?
What is priming? Why is it required in a centrifugal pump?
a)Unit 3Explain the working and construction of single acting reciprocating pump with neat sketch?
Explain the working and construction of single acting reciprocating pump with neat sketch?
b)Unit 4Discuss the concept of thermal equilibrium and state zeroth law of thermodynamics?
Discuss the concept of thermal equilibrium and state zeroth law of thermodynamics?
a)Unit 4Explain the construction and working of Babcock and Wilcox boiler with a neat sketch.
Explain the construction and working of Babcock and Wilcox boiler with a neat sketch.
b)Unit 4State the Kelvin-Planck and the Clausius statements of the second law of thermodynamics. Explain the equivalence of Kelvin-Planck and Clausius statements.
State the Kelvin-Planck and the Clausius statements of the second law of thermodynamics. Explain the equivalence of Kelvin-Planck and Clausius statements.
a)Unit 5Explain the structure and working of four-stroke petrol engine with a neat sketch.
Explain the structure and working of four-stroke petrol engine with a neat sketch.
b)Unit 5Write short notes on surging, choking and stalling.
Write short notes on surging, choking and stalling.
Unit 1/2/3/4Write Short note on any two: a) Hooks law and modulus of elasticity b) Micrometer c) Newton's law of viscosity d) Natural and artificial draught
Write Short note on any two: a) Hooks law and modulus of elasticity b) Micrometer c) Newton's law of viscosity d) Natural and artificial draught