B.TECH - Semester 7 design of machine elements 2 Question Paper 2019 (jun)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- 705: DESIGN OF MACHINE ELEMENTS II (M) Time : 3 Hours Max. Marks : 100 INSTRUCTION:
- Define (a) Back lash (b) Gear ratio.
- What preliminary design considerations should be adopted when selecting a gear drive?
- What is interference in gears? How can you overcome it?
- State the advantage of worm gear drive in weight lifting machines?
- Classify the sliding contact bearings according to the thickness of layer of the lubricant between the bearing and the journal?
- What are the type of radial ball bearing?
- State the type of stress induced in a rim flywheel?
- What is the difference between a coupling and a clutch?
- Why is it necessary to dissipate the heat generated during clutch operation?
- What type of external forces act on connecting rod?
- Design a helical gear drive two transmits 20 kW at a pinion speed of 1500 rpm . The velocity ratio is 2.5 . Selecting suitable materials, determine the dimension of the gears.
- A pair of bevel gears is to be used to transmit 12 kW from a pinion rotating at 360 rpm to a gear mounted on a shaft which intersects the pinion shaft at an angle of $70^{\circ}$. Assuming that the pionion is to have an outside pitch diameter of 200 ...
- Design a suitable journal bearing for centrifugal pump from the following available data: Load on the bearing $=13.5 \mathrm{KN}$; Diameter of the journal $=80 \mathrm{~mm}$; Speed $=$ 440 rpm ; Bearing characteristics number at the working temperat...
- Select a suitable deep groove ball bearing machine spindle of 40 mm diameter. Radial load is 2 KN . Thrust is 1.5 KN . Spindle speed is 3000 rpm . Desired life is 3000 hrs .
- A single cylinder internal combustion engine working on the four stroke cycle develops 75 kW at 360 rpm . The fluctuation of energy can be assumed to be 0.9 times the energy developed per cycle. If fluctuation of speed is not to exceed 1 percent and ...
- A multiple clutch with both sides effective transmits 30 KW at 360 rpm . Inner and outer radii of the clutch discs are 100 and 200 mm respectively. The effective coefficient of friction is 0.25 . An axial load of 600 N is applied. Assuming uniform we...