Download PTU B.Tech 2020 March Automation-And-Robotics Question Paper 3rd Sem BTAR 303 Engineering Mechanics

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech Automation-And-Robotics 3rd Sem BTAR 303 Engineering Mechanics 2020 March Previous Question Paper

1 | M-63003 (S2)-840
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(Automation & Robotics) (2012 & Onwards) (Sem.?3)
ENGINEERING MECHANICS
Subject Code : BTAR-303
M.Code : 63003
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
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
1. Answer briefly :
a. State general plane motion.
b. Write the work energy equation of particles.
c. State triangle law of forces.
d. State the principle of work and energy for the general plane motion of rigid bodies.
e. State D?Alembert?s principle.
f. What is impulsive force?
g. Define coefficient of static friction.
h. Define mechanical advantage of a machine.
i. State the law of friction.
j. State Lame?s theorem.
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1 | M-63003 (S2)-840
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(Automation & Robotics) (2012 & Onwards) (Sem.?3)
ENGINEERING MECHANICS
Subject Code : BTAR-303
M.Code : 63003
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
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
1. Answer briefly :
a. State general plane motion.
b. Write the work energy equation of particles.
c. State triangle law of forces.
d. State the principle of work and energy for the general plane motion of rigid bodies.
e. State D?Alembert?s principle.
f. What is impulsive force?
g. Define coefficient of static friction.
h. Define mechanical advantage of a machine.
i. State the law of friction.
j. State Lame?s theorem.
2 | M-63003 (S2)-840
SECTION-B
2. Compute the magnitude of the force F, whose components along x, y and z directions are
15 kN, ?26 kN and ?33 kN, respectively. Also compute the inclinations with all axes.
3. What are the different types of friction and explain them.
4. A ball is supported on a smooth wall by tieing a rod, as shown in Figure 1. Find the tension
in the tie rod and support of the wall. The radius of ball is 5 cm, length of the rod 13 cm,
and weight 120 N.

FIG.1
5. A truck of mass 15 tonnes travelling at 1.6 m/sec impacts with a buffer spring which
compresses 1.25 mm per kN. Find the maximum compression of the spring.
6. In a system of pulleys of the first type, there are three pulleys, and a weight of 320 N can
be just supported by an effort of 50 N. find the efficiency of the machine and the amount of
friction.
SECTION-C
7. The motion of the particle is described by the equation x = 2t
3
? 6t
2
? 18t + 24 where x is in
meter and t is in second. Determine the time, position, displacement and acceleration of the
particle when its velocity becomes zero.
8. Distinguish clearly the difference between the working of a single purchase crab winch and
a double purchase crab winch.
9. a. Explain any two principles of equilibrium.
b. Explain the condition of equilibrium
c. Discuss the various types of equilibrium.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
A
C
B
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