KOM MECH CAT I
2
VELS UNIVERSITY SCHOOL OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING CONTINUOUS ASSESSMENT TEST- I Subject Code : 11CBME35 Subject Name : KINEMATICS OF MACHINARY Sem / Branch : III / MECHANICAL ENGINEERING Time: 90 Minutes Marks: 50 Part - A (9x2 = 18) (Answer any 9 Questions) 1. State the Grashoff’s law 2. Define degree of freedom 3. State the Kutzback criterion 4. What is meant by ‘Transmission angle’? 5. Define kinematic link and pair 6. What is the objective of kinematic analysis? 7. Define Kennedy’s theorem. 8. Define rubbing velocity 9. Distinguish normal component of acceleration and tangential component of acceleration. 10. Define corioli’s component of accelerations Part – B (2x16 = 32) 11. a) Explain the inversions of four bar chain (12) b) Explain mechanical advantage related to four bar chain (04) (OR) 12. Explain the following a) Whitworth quick return mechanism. (8) b) Crank and slotted lever quick return motion mechanism. (8) 13. The crank and connecting rod of a theoretical steam engine are 0.5 m and 2 m long respectively. The crank makes 180 r.p.m. in the clockwise direction. When it has turned 45° from the inner dead centre position, determine: i. Velocity of piston, ii. Angular velocity of connecting rod, iii. Velocity of point E on the connecting rod 1.5 m from the gudgeon pin.(16) (OR) 14. PQRS is a four bar chain with link PS fixed. The lengths of the links are PQ = 62.5 mm ; QR = 175 mm ; RS = 112.5 mm ; and PS = 200 mm. The crank PQ rotates at 10 rad/s clockwise. Draw the velocity and acceleration diagram when angle QPS = 60° and Q and R lie on the same side of PS. Find the angular velocity and angular acceleration of links QR and RS. (16) VELS UNIVERSITY SCHOOL OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING CONTINUOUS ASSESSMENT TEST- I Subject Code : 11CBME35 Subject Name : KINEMATICS OF MACHINARY Sem / Branch : III / MECHANICAL ENGINEERING Time: 90 Minutes Marks: 50 Part - A (9x2 = 18) (Answer any 9 Questions) 1. State the Grashoff’s law 2. Define degree of freedom 3. State the Kutzback criterion 4. What is meant by ‘Transmission angle’? 5. Define kinematic link and pair 6. What is the objective of kinematic analysis?
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Transcript of KOM MECH CAT I
VELS UNIVERSITYSCHOOL OF ENGINEERING
DEPARTMENT OF MECHANICAL ENGINEERINGCONTINUOUS ASSESSMENT TEST- I
Subject Code : 11CBME35Subject Name : KINEMATICS OF MACHINARYSem / Branch : III / MECHANICAL ENGINEERING Time: 90 Minutes Marks: 50
Part - A (9x2 = 18)(Answer any 9 Questions)
1. State the Grashoff’s law2. Define degree of freedom3. State the Kutzback criterion4. What is meant by ‘Transmission angle’?5. Define kinematic link and pair6. What is the objective of kinematic analysis?7. Define Kennedy’s theorem.8. Define rubbing velocity9. Distinguish normal component of acceleration and tangential component of acceleration.10.Define corioli’s component of accelerations
Part – B (2x16 = 32)11.
a) Explain the inversions of four bar chain (12)b) Explain mechanical advantage related to four bar chain (04) (OR)
12. Explain the followinga) Whitworth quick return mechanism. (8)b) Crank and slotted lever quick return motion mechanism. (8)
13. The crank and connecting rod of a theoretical steam engine are 0.5 m and 2 m long respectively. The crank makes 180 r.p.m. in the clockwise direction. When it has turned 45° from the inner dead centre position, determine: i. Velocity of piston, ii. Angular velocity of connecting rod,iii. Velocity of point E on the connecting rod 1.5 m from the gudgeon pin.(16)
(OR)14. PQRS is a four bar chain with link PS fixed. The lengths of the links are PQ = 62.5
mm ; QR = 175 mm ; RS = 112.5 mm ; and PS = 200 mm. The crank PQ rotates at 10 rad/s clockwise. Draw the velocity and acceleration diagram when angle QPS = 60° and Q and R lie on the same side of PS. Find the angular velocity and angular acceleration of links QR and RS. (16)
VELS UNIVERSITYSCHOOL OF ENGINEERING
DEPARTMENT OF MECHANICAL ENGINEERINGCONTINUOUS ASSESSMENT TEST- I
Subject Code : 11CBME35Subject Name : KINEMATICS OF MACHINARYSem / Branch : III / MECHANICAL ENGINEERING Time: 90 Minutes Marks: 50
Part - A (9x2 = 18)(Answer any 9 Questions)
1. State the Grashoff’s law2. Define degree of freedom3. State the Kutzback criterion4. What is meant by ‘Transmission angle’?5. Define kinematic link and pair6. What is the objective of kinematic analysis?7. Define Kennedy’s theorem.8. Define rubbing velocity9. Distinguish normal component of acceleration and tangential component of acceleration.10.Define corioli’s component of accelerations
Part – B (2x16 = 32)11.a) Explain the inversions of four bar chain (12)b) Explain mechanical advantage related to four bar chain (04)
(OR)12. Explain the following
a) Whitworth quick return mechanism. (8)b) Crank and slotted lever quick return motion mechanism. (8)
13. The crank and connecting rod of a theoretical steam engine are 0.5 m and 2 m long respectively. The crank makes 180 r.p.m. in the clockwise direction. When it has turned 45° from the inner dead centre position, determine:
i. Velocity of piston, ii. Angular velocity of connecting rod,iii. Velocity of point E on the connecting rod 1.5 m from the gudgeon pin.(16)
(OR)14. PQRS is a four bar chain with link PS fixed. The lengths of the links are PQ = 62.5
mm ; QR = 175 mm ; RS = 112.5 mm ; and PS = 200 mm. The crank PQ rotates at 10 rad/s clockwise. Draw the velocity and acceleration diagram when angle QPS = 60° and Q and R lie on the same side of PS. Find the angular velocity and angular acceleration of links QR and RS. (16)
