Veer Narmad South Gujarat University 2010-3rd Sem B.E Machines Drawing - 2 ( ) ( Mech.) - Question Paper

Time : 3 Hours]

RN-6263

B. E. II (Sem. Ill) (Mech.) Examination May/June - 2010 Machine Drawing

[Total Marks : 70

Instruction :

(1)

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Fillup strictly the details of signs on your answer book.

Name of the Examination :

B. E. 2 (Sem. 3) (Mech.)

Name of the Subject:

Machine Drawing

-Section No. (1,2,.. ...): 1&2

(2)    Figures on right indicate full marks.

(3)    No marks for dimensions.

(4)    Draw the various parts in proportion.

(5)    For all questions sketch the figures free hand and proportionately.

SECTION - I

Answer the following :    10

(i)    Differentiate between square thread and 'v' thread.

(ii)    Give the comparison between keys and cotters.

(iii)    Sketch the headless tapered bolt.

(iv)    Draw symbols for welded joints as recommended by the B.I.S.

(a)    Spot

(b)    Edge

(v)    The depth of the thread is equal to half the

difference between the _ diameter and the

_diameter.

Draw the neat sketch the following :

(i)    'T' headed bolt.    5

(ii)    Wing nut.    5

Sketch the following proportionately. Split muff coupling. 7 Sketch the two views of single riveted double    8

strap butt joint.

OR

(b) Sketch the following :

(i)    Wood ruff key.    4

(ii)    Buttress thread.    4

3 (a) Sketch the following proportionately - eye foundation 7 bolt.

OR

(a)    Sketch the following :    7

(i)    Failure of riveted joint.    4

(ii)    Locking plate.    3

(b)    Sketch the following proportionately knuckle joint.    8

SECTION - II

4    (a) Answer the following questions :    10

(i)    Draw the methods of fixing a pulley.

(ii)    Draw the plug of the pipe joint.

(iii)    How to prevent rotation of brasses in bearing?

(iv)    What is the advantage of gland and stuffing-box expansion fitting of pipe joint?

(v)    What is the material used for piston ring?

(b) Draw two views of a Wall Bracket?    10

OR

(b) Draw two views of J-type hanger.    10

5    (a) Show by means of two sketch of foot-step bearing.    8

OR

(a)    Sketch neatly two views of bushed bearing.    8

(b)    Sketch neatly V-belt pulley.    7

OR

(b) Make a neat sketches of a cross, tee and elbow type 7 pipe joint.

6    The following details of a stuffing box are given in fig. 1. 15 Draw the assembly with following views.

(Assume suitable dimensions if required).

(i)    Half sectional view from the front

(ii)    Top view.

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Attachment: veer-narmad-south-gujarat-university-2010-b-e-28366-1.pdf

Earning:   Approval pending.