COMPUTER AIDED AUTOMOTIVE DESIGN
SUBJECT CODE - BTAE -601
PAPER ID A-2380
Time : 03
hours Maximum
marks :60
Instruction
to the candidates:
1.
Section -A is compulsory consisting often questions can'ying Two marks each.
2.
Section -B contains Five questions carrying Five marks each.
3.
Section -C contains Three questions carrying Ten marks each.
Section-A
Q1.
a)Explain
the concept of minimum number of teeth on a sprocket.
b) What is
Specific advantage of worm and worm wheel?
c) What is
meant by sproket for a chain?
d) How
bearing are classified?
e) Explain
Valve trains.
t) Why the
area of inlet valve port is made larger than the area of exhaust valve port?
g) How are
timing gear lubricated?
h) What do
you mean by interference in involute gear?
i) What is
belt rating?
j) Why taper
roller bearings are used in a pair?
Section-B
Q2. Discuss different types of wear
failure and breakage failure of gear tooth due to static and dynamic loads.
Q3. Give step by step procedure for
the selection of flat belt from manufacturer's catalogue for given application.
Provide all other information and recommendations needed in selection.
Q4. What conditions must be satisfies
in order that a pair of spur gears may have a constant velocity ratio? Discuss.
Q5.Explain the various stresses
induced in connecting rod.
06. What is meant by nipping of leaf
springs and derive its formula.
Section -C
Q7.Discuss the procedure of design of
lubrication system for crank shaft.
Q8. Two pulleys of diameters 45omm
and 150 mm are mounted on two parallel shafis 2m apart and are connected by a
flat belt drive. Find the which can be transmitted by the belt when larger
pulley rotates at l8orpm. The maximum permissible tension in the belt is 1 kN,
and the coefficient of friction between belt and pulley is 0.25. also find the
length of the cross belt required and the angle of arc of contact between belt
and the pulleys.
Q9. A chain
drive is used for reduction of speed from 24orpm to 120 rpm . The number of
teeth on drive sprcket is 24. Find the number of teeth on the driven sprocket.
If the pitch circle diameter of the driven sproket is 60omm and centre distance
is l m. Determine the pitch and length of the chain.
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