Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech IV VEHICLE BODY ENGINEERING AND SAFETY Previous Question Paper (December - 2019 - R16)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks.
Part A
Write the advantages of aluminum alloy in vehicle body construction.
Answer
Aluminum alloys offer a high strength-to-weight ratio, which significantly improves fuel efficiency and vehicle performance. Additionally, they provide excellent corrosion resistance and are highly recyclable, contributing to sustainable manufacturing practices.
What are various types of composites used in vehicle body construction?
Answer
Common composites used include:
- Glass Fiber Reinforced Plastics (GFRP): Used for body panels and interior components.
- Carbon Fiber Reinforced Plastics (CFRP): Utilized in high-performance structural parts for extreme weight reduction.
- Natural Fiber Composites: Employed for interior trim and acoustic insulation.
Define aerodynamic coefficient and mention various methods for its estimation.
Answer
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What are different design trends in shaping the packaging?
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List the different type of load carrying structures in vehicle body.
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Enumerate different approaches for body shell analysis in the vehicle.
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Distinguish the terms vibration and harshness quoting with example.
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What are laws of mechanisms applied to safety?
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Explain criteria of design based on passenger capacity.
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What are effects of tyre factors on stability?
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Part B - Unit I
Explain the usage of timber in vehicle body construction?
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Distinguish features of FRP and metal matrix composites for structural applications.
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Classify alloy steels? Enumerate their applications in vehicle body construction and other parts.
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Part B - Unit II
Discuss the determination of aerodynamic coefficients using wind tunnel testing?
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Indicate important dimensions of passenger car drivers seat with a neat sketch.
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Write a note on the following: a) dash-board instruments b) advances in electronic display
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Part B - Unit III
With the aid of a sketch, explain typical door locking mechanism in the vehicle body.
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Explain various parameters to be considered in designing the drivers seat.
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Write brief notes on the following: a) Minimum space requirements in cars b) Methods of improving space in cars.
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Part B - Unit IV
List out the main features of a car body for its trouble free performance and safety of passengers?
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Explain briefly the body styling and the role of body styling in body structure design?
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Write a note on crash tests on full scale model.
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Part B - Unit V
Indicate the step by step procedure in bus body construction?
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Sketch and explain different metal sections used in bus body construction.
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Explain the constructional details of a conventional bus body.
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Mention the advantages of integral bus body.
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