JNTU
JNTU B.Tech III FUNDAMENTALS OF MECHANICAL ENGINEERING Previous Question Paper (July/August - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Outline work and power.
Answer
Work is defined as the product of force and the displacement in the direction of the force. Power is the rate at which work is performed, defined as work done per unit time.
Define change of state, path and process.
Answer
Change of state refers to the transition of a system from one equilibrium state to another. A path is the series of states through which a system passes during a change. A process is the specific method or sequence of operations by which a system changes from an initial state to a final state.
Label Steam formation.
Answer
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State Boyle's law and Charle's law.
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Define brake power.
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Outline the working substances of heat engine.
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Compare window and split air conditioners in brief.
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Label the significance of multistage in compressor.
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Outline the advantages of Oldham coupling.
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List the applications of diamond and plastic.
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Part B
Analyze the applications of hydel and bio-fuels.
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Explain internal energy and enthalpy.
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Interpret the applications of fossil fuels and nuclear fuels.
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Judge ozone depletion.
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Explain isothermal process, adiabatic process and poly-tropic process.
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Build steam calorimeters.
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Analyze classification and working of Babcock and Wilcox boiler.
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Explain the description and thermal efficiency of Carnot and Otto cycles.
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Develop working of two-stroke cycle petrol engines with neat diagram.
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Construct the types and operation of Reciprocating and Rotary air compressors.
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Evaluate the operating principle of Vapor compression refrigeration system with neat sketch.
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Judge various types of brakes.
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Explain the transmission of motion and power using belt drive, shaft and axle.
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Analyze the types and applications of ferrous and nonferrous metals.
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