BE Machine Design 8th semester Question 2022 guess paper

BE Machine Design 8th semester Question 2022 guess paper

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BE 8th semester Examination, Dec 2022 

(mechanical Engineering Branch)

Machine Design ME 802

Unit-1

1. Design completely a belt drive to drive a winch from an electric motor of 11 kW power. Speed of motor shaft is 750 rev/min. Speed ratio is 4. Belt position is horizontal and there is considerable variation of load.

or

2. Write the design procedure for a chain drive 

Unit-2

3. Design a bevel gear drive between two shafts whose axes are at right angles. Speed of Pinion shaft is 240 r.p.m. and that of the gear shaft is 120 r.p.m. Pinion is to have 21 teeth of in volute profile with 20 mm module and pressure angle of 20° and is to be of suitable material. Gear is of cast iron. Power at gear shaft 75 kW.

or

4. Give the Design Procedure for bevel gears.

Unit-3

5. 

a.What are the various general design considerations of an I.C. engine?

b. What are the main function of piston of an Internal combustion engine ? Why are rings provided in a position?

or

6. Explain the design procedure for piston of an I.C engine.

Unit-4

7. Design a muff coupling to connect two shafts transmitting 18.75 kW at 1000 r.p.m. The allowable shear stress for shaft and key material is 55 N/m㎡ ?. Coupling is required to transmit 20% overload. The muff is made of cast iron for which allowable shear stress can be taken as 16 N/m㎡ ?.

or

8.Explain design of flanges for pressure vessels.

Unit-5

9.

a. What do you understand by optimizing ? Discuss various optimization methods in brief.

 

b. Discuss the unimodel function in detail with neat sketches. 

or

10. Give classification of optimization problems.

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