Maharashtra State Board of Technical Education 2007 Diploma Mechanical Engineering Automobile Engineering-Annual Pattern - Question Paper

Automobile Engineering
Third Year : 2007
2 Hr / 50 Marks

Instructions:

1. All ques. are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Use of Blockpatterns, Slide rule, Mathematical and Steam Tables, Non-Programmable Electronic Pocket Calculator and Mollier's Charts is permissible.
4. Figures to the right indicate full marks.
5. presume suitable additional data, if necessary.


1. a) Attempt any 1 of the following: [Marks: 4]

i. Sketch the layout of a Typical Automobile Vehicle.

ii. List the constituents current in exhaust of diesel engine.


b) Attempt any 5 of the following: [Marks: 10]

i. What is the function of final drive?

ii. List out the kinds of steering gears.

iii. What is the function of breaking system?

iv. Draw the part of a conventional tyre with tube.

v. elaborate the different kinds of resistances to the motion of the vehicle?

vi. What is a hybrid Vehicle?

vii. What is meant by Ampere-hour capacity of a battery?


2. Attempt any 3 of the following: [Marks: 12]

a) discuss the function of the following:

i. Connecting Rod.
ii. Cam Shaft

b) explain the fuel injector with neat sketch.

c) What is magneto ignition? Draw the sketch and discuss it's working.

d) What do you know about constant mesh gear box?

e) discuss the working of Macpherson Strut Independent Suspention System.


3. Attempt any 3 of the following: [Marks: 12]

a) discuss the working of electrical fuel pump.

b) discuss the water cooling system with suitable diagram. (Pump Circulation System)

c) discuss the working of cut-out relay.

d) discuss the concept of Double De-Clutching i shifting from higher gear to lower gear.

e) explain the motor vehicle act 99, part 115.


4. a) Attempt any 1 of the following: [Marks: 4]

i. What is the effect of presence of air in the Hydraulic Brake System?

ii. discuss the importance of differntial in the transmission system.


b) Attempt any 2 of the following: [Marks: 8]

i. Draw the rack and pinion steering gear and discuss it's working.

ii. discuss the working of Telescopic Shock absorber.

iii. What do you know about microprocessor controlled vehicles?

Earning:   Approval pending.