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Engineering Drawing I Question Paper

Engineering Drawing I

Course:Bachelor Of Science In Engineering

Institution: Kenyatta University question papers

Exam Year:2008

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE IN MANUFACTURER, ENERGY AND WATER ENGINEERING

SET100: ENGINEERING DRAWING I

DATE: Wednesday 26th November 2008
TIME: 11.00am-1.00pm

INSTRUCTIONS:
1. Question ONE is compulsory (30marks)
2. Choose any other TWO from the remaining four (20marks)
3. Use proper lines, letting, title block, cleanliness and tidiness
4. Do not spend more that 1 hour per question
Q1.
A guide bracket incorporating a separate inspection plate is given in figure Q1.

Draw for the guide bracket assembly its views as follows:

a)
Front view

(6marks)

b)
Top Plan view

(6marks)

c)
End view

(6marks)

d)
Five important dimensions

(5marks)

e)
Projection symbol

(2marks)

f)
Title block

(5marks)

Q2.
Figure Q2 shows two orthographic views of a cast iron bracket used for vertical

spindle. Draw an isometric view of the bracket using a suitable scale.

(20marks)
Q3.
Design a radial cam to give the following motion to a roker follower:- Data: Cam
specification. Plate Cam, rotating anticlockwise. Point follower, Lease radius of

Cam, 30mm. Cam shaft diameter, 20mm.
Motion
0o-90o
follower rises 20mm with uniform velocity

90o-150o
follower rises 30mm with SHM

150o-210o
dwell period

210o-270o
follower falls 20 mm with uniform acceleration

270o-360o
follower falls 30 mm with uniform retardation

(20marks)
Q4.
a)
Draw a gear took of involute form given the following data:-

14
TEETH

25
MODULE (mm)

20o
PRESSURE ANGLE
(10marks)

b)
Draw two turns of a spring which is right-hand would from a strip 18mm
by 8mm rectangular section with a pitch of 72 mm and an outer diameter
of 80mm
(10marks)

Q5.
a)
A thread unwinds itself from a cylindrical drum of 60mm in radius.

Draw:-

i)
the locus of the free end of the thread as it unwinds through 180o
(4marks)

ii)
the normal and tangent at any point on the curve.
(4marks)

iii)
In block capitals name the curve, normal and tangent.

(2marks)

b)
Using the data given for the link mechanism show in figure Q 5(b) and
given that C is the midpoint of AB, O1A and O2B are two cranks and AB
and CD are two links, Plot the locus of point P on the link CD.
(10marks)
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Engineering Drawing I Question Paper

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