B.TECH - Semester 5 theory of machines Question Paper 2019 (feb)
Practice authentic previous year university questions for better exam preparation.
- 503 : THEORY OF MACHINES (MP) Time : 3 Hours Name : $\_\_\_\_$ Max. Marks : 100 100 Answer all questions from Part-A and any one full question from each module of Part - B. question from each module of Part-B. PART - A
- What is Kutzbach criterion?
- Sketch two examples of slider-crank mechanism.
- State Aronhold-Kennedy's theorem of three-centres.
- Explain the effect of centrifugal tension in belt drives.
- Distinguish between absorption and transmission-type dynamometers.
- What is meant by interference in spur gears?
- The outer and inner radii of a single plate clutch are 80 mm and 40 mm respectively. Compute the maximum pressure assuming uniform wear.
- Sketch the follower displacement vs cam angle for a typical cam movement.
- How is the arc of contact of two spur gears determined?
- Briefly explain compound and reverted gear trains. Module - 1
- With the help of diagrams, explain Ackerman and Davis' steering mechanisms. OR
- In the slider crank mechanism shown below, crank OA of length 75 mm rotates with a uniform speed of 120 rpm . Find the linear velocity of the point Q at 50 mm on the extended connecting rod (as shown). Given BA $=300 \mathrm{~mm}$, $\mathrm{AQ}=50 \mathrm{~mm}$.
- A pair of spur gears with involute teeth has a gear ratio $4: 1$. The arc of approach is not to be less than the circular pitch and the smaller wheel is the driver. The angles of pressure is 14.5 degrees. i) What is the least number of teeth that can be used on each wheel ? ii) What is the addendum ...
- A cam is to give the following motion to a knife-edged follower: - To raise the follower through 30 mm with uniform acceleration and deceleration during $120^{\circ}$ rotation of the cam. - Dwell for next $30^{\circ}$ of the can rotation. - To lower the follower with simple harmonic motion during t...
- In the given 4-bar mechanism, the crank $\mathrm{O}_{1} \mathrm{~A}$ has a constant angular velocity of $10 \mathrm{rad} / \mathrm{s}$ and an angular acceleration of $30 \mathrm{rad} / \mathrm{s}^{2}$, both clockwise. Find the angular velocities and angular accelerations of links AB and $\mathrm{O}_...
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