waecE-LEARNING
Technical Drawing Paper 1,Nov/Dec. 2010  
Questions: 1 2 3 4 Main
General Comments
Strength
Weakness/Remedies









Question 3

 

In the link mechanism below roller K is constrained to slide horizontally along AB while roller J is constrained to slide vertically along CD. Complete the link mechanism (line diagram) and plot the locus of point P for a complete movement of roller K from A to B .



 

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OBSERVATION

Candidates were required to divide the AB uniformly into a number of divisions representing the path of the roller K. Different positions ofP corresponding to different locations of the roller are then plotted into a smooth curve as shown below. Some candidates failed to locate the different positions of the roller while a good number of them who got it had a good core in the question.

 




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