Download PTU B.Tech 2021 Jan Automation-And-Robotics 3rd Sem 76504 Kinematics And Theory Of Machines Question Paper

Roll No. : _______________________________ Total No. of Pages : 03

Total No. of Questions: 18

B.Tech. (Automation & Robotics) (2018 Batch) (Sem.-3)

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KINEMATICS AND THEORY OF MACHINES

Subject Code: BTAR-305-18

M.Code: 76504

Time: 3 Hrs. Max. Marks: 60

INSTRUCTIONS TO CANDIDATES :

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1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

Write briefly :

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1. Differentiate between flexible link and fluid link.
2. Differentiate between lower pair and higher pair.
3. What is the significance of degrees of freedom of a kinematic chain when it functions as a mechanism? Give examples.
4. State the 'Aronhold Kennedy's Theorem' of three instantaneous centres.
5. What is the Coriolis acceleration component?

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6. Why a roller follower is preferred to that of a knife-edged follower?
7. Explain the terms :
   1. Module
   2. Pressure angle
8. Differentiate between epi-cycloid and hypo-cycloid.

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9. What do you understand by Laws of friction?
10. Explain transmission angle of a mechanism.

SECTION-B

11. A crank and slotted lever mechanism used in a shaper has a centre distance of 300 mm between the centre of oscillation of the slotted lever and the centre of rotation of the crank. The radius of the crank is 120 mm. Find the ratio of the time of cutting to the time of return stroke.
12. Using relative velocity approach find the velocity of point D in Fig. 1, ?2=20 rad/sec.
    

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    O2O4= 350 mm, BD = 160 mm
    O2B = 140 mm, CD = 100 mm
    BC = 250 mm, O4C = 210 mm
    

    This download link is referred from the post: PTU B.Tech 2021 January Previous Question Papers || PTU Punjab Technical University

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