Maharashtra State Board of Technical Education 2008 Diploma Automobile Engineering Automobile Transmission Systems - Question Paper

Sample ques. Paper – I
Course Name :- Automobile Engineering
Course code :- AE
Semester :- Third
Subject :- Automobile Transmission Systems
Duration :- three hours Marks: 80

Instructions :
1] All ques. are compulsory.
2] Figures to the right shows full marks.
3] Use of non-programmable calculator is permissible.

Q 1: Attempt any 8 of the following: Marks [8 x two = 16]
a) State the location of clutch in transmission system.
b) State the materials used in any 2 Wheeler frame.
c) State the working principle of clutch
d) State any 2 advantages of diaphragm clutch.
e) State the necessity of gear box.
f) How gear ratio is calculated?
g) State the components of propeller shaft assembly.
h) State the function of universal joint
i) Why backlash is given in differential gears?
j) Draw a neat tagged sketch of any 1 kind of rim.

Q two : Attempt any 3 of the subsequent : Marks [3 x 4=12]
a) State the vehicles in which centrifugal clutch & single plate clutch are used.
b) Distinguish ranging from single plate & multi plate clutch. (four points)
c) State the working of fluid flywheel.
d) Why cable operated clutch linkage is used in 2 Wheeler?

Q three : Attempt any 3 of the subsequent : Marks [3 x 4=12]
a) State the advantages & drawbacks of torque converter.
b) Why constant mesh gearbox is preferred to sliding mesh gearbox in a 2 Wheeler?
c) Draw constant mesh gearbox with 2nd gear in engaged position with power flow.
d) What is the difference ranging from 3 speed & 4 speed gearbox?
Where are these used?

Q four : Attempt any 4 of the following: Marks [4 x 4=16]
a) Draw a neat tagged diagram of rear engine rear wheel drive kind of vehicle layout.
b) elaborate the differences ranging from integral & semi-integral frames?
c) State different considerations on the basis of which Automobile chassis are classified.
d) State the principle of differential. State the components of spur differential.
e) What is necessity of constant velocity joints in case of front engine front wheel drive kind of car layout?
f) What is the tyre rotation procedure for a 4 Wheeler? discuss it with a neat sketch.

Q five : Attempt any 3 of the subsequent : Marks [3 x 4=12]
a) Draw a neat tagged sketch of 2 Wheeler chain drive kind of transmission system.
b) Draw a neat tagged sketch of 3 quarter floating kind of rear axle.
c) What is the basis for preferring full floating rear axle over other kind of rear axle in the case of commercial vehicles?
d) Why hypoid gears are used in final drive? Also state its disadvantages.

Q six : Attempt any 3 of the subsequent : Marks [3 x 4=12]
a) elaborate the effects of high inflation pressure in tyres?
b) Distinguish ranging from tube tyres & tubeless tyres on the basis of weight, fuel efficiency, life & road holding.
c) Draw a neat tagged sketch of Hotchkiss drive.
d) Why universal joint is used at the rear end of propeller shaft used in Hotchkiss drive?

Earning:   Approval pending.