Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech ME (Mechanical Engineering) 2020 March 6th Sem Machine Design II Previous Question Paper
1 | M-59053 (S2)-2814
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech (ME) (Sem.?6)
MACHINE DESIGN-II
Subject Code : ME-302
M.Code : 59053
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
Q1. Write briefly :
a) In the context of wire rope, what 6 ? 19 represents?
b) What is nipping of leaf springs?
c) What do you mean by simplex and duplex chains?
d) What do you mean by de-energizing brake?
e) Define module and pitch diameter of a gear.
f) What is a 3D model in CAD represents?
g) Define ?coefficient of functional energy? for a flywheel.
h) Give three usages of conical helical springs.
i) Explain fast and loose pulley with neat sketch.
j) What is the significance of sommerfield number in sliding contact bearing?
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1 | M-59053 (S2)-2814
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech (ME) (Sem.?6)
MACHINE DESIGN-II
Subject Code : ME-302
M.Code : 59053
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
Q1. Write briefly :
a) In the context of wire rope, what 6 ? 19 represents?
b) What is nipping of leaf springs?
c) What do you mean by simplex and duplex chains?
d) What do you mean by de-energizing brake?
e) Define module and pitch diameter of a gear.
f) What is a 3D model in CAD represents?
g) Define ?coefficient of functional energy? for a flywheel.
h) Give three usages of conical helical springs.
i) Explain fast and loose pulley with neat sketch.
j) What is the significance of sommerfield number in sliding contact bearing?
2 | M-59053 (S2)-2814
SECTION-B
Q2 Discuss various important factors on which a particular drive for power transmission
depends?
Q3 Discuss various types of stresses induced in a flywheel rim.
Q4 Explain the basic theory and structure of CAD software.
Q5 Give the complete general design procedure for flat belt drive along with pulley, shaft and
keys.
Q6 Explain in detail what are different failure modes of the gears?
SECTION-C
Q7 Discuss and derive basic Lewis equation used in designing of gears.
Q8 A single cylinder double acting steam engine develops 150 KW at a mean speed of
80 r.p.m. The coefficient of energy is 0.1 and the fluctuation of speed is 2% ? of mean
speed. If the mean diameter of the flywheel rim is 2 metre and the hub and spoke provide
5% of the rotational inertia of the flywheel, find the mass of the flywheel and cross-
sectional area of the rim. Assume the density of the flywheel material (cast iron)
as 7200kg/m
3
.
Q9 How ball and roller bearing are designated and specify the conditions that suitably select
one bearing amongst the ball, roller and needle bearing?
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.
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This post was last modified on 21 March 2020