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Vehicle Technology And Practice Question Paper

Vehicle Technology And Practice

Course:Diploma In Automotive Engineering

Institution: Mombasa Polytechnic University College question papers

Exam Year:2001

2103/306
VEHICLE TECHNOLOGY AND PRACTICE
Oct/Nov. 2001
Time: 3 Hours

THE KENYA NATIONAL EXAMINATIONS COUNCIL
DIPLOMA IN AUTOMOTIVE ENGINEERING
VEHICLE TECHNOLOGY AND PRACTICE
3 Hours

INSTRUCTIONS TO CANDIDATES
You should have the following for this examination:
Answer booklet.
Drawing instruments.
This paper has TWO sections; A, and B.
Answer FIVE questions in all, taking at least TWO questions from each section.
All questions carry equal marks.
Maximum marks for each part of a question are indicated.

This paper consists of three printed pages.
SECTION A
Answer at least TWO questions from this section.
1) a) State FOUR advantages of worm and worm wheel final drive over crown wheel and pinion type. (4 marks)
b) With the aid of a diagram, explain the operation of a two speed final drive unit used in some vehicles. (16 marks)
2) a) List any FOUR requirements of a brake servo unit fitted in a motor vehicle. (4 marks)
b) With the aid of a diagram, explain the operation of a vacuum brake servo unit. (16 marks)
3) a) With the aid of a graph, explain the effect of using single Hooke’s universal joint to transmit a drive through an angle. Suggest a solution to the problem. (10 marks)
b) Illustrate one type of a constant velocity joint and explain its operation. (10 marks)
4) a) State the meaning of the following as applied to steering:
i. Centre point steering
ii. Positive roll radius
iii. Negative roll radius (6 marks)
b) Illustrate Negative roll radius and explain its effect on stability of a vehicle. (14 marks)

SECTION B
Answer at least TWO questions from this section.
5) a) List any FOUR possible causes of inefficiency in air braking system. (4 marks)
b) Describe a procedure for re-lining rear brake shoes and testing the vehicle for brake efficiency using a decelerometer. (16 marks)
6) a) State any FOUR possible causes of power loss in automatic gearbox. (4 marks)
b) A vehicle has its automatic gearbox overhauled and fitted back. Describe how to carry out all the necessary tests on the vehicle before handing over the vehicle to the owner.
(16 marks)

7) A public service vehicle is due for road worthiness inspection. Describe necessary preparations required under the following headings.
a) Suspension. (5 marks)

b) Brakes (5 marks)

c) Electrical (5 marks)

d) Interior (5 marks)

8) a) A vehicle is suspected to have a worn clutch plate. Describe a test to determine the plate condition. (4 marks)
b) If the test in (a) indicate a worn clutch plate, describe how to replace it. (16 marks)

Vehicle Technology And Practice Question Paper

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