Instructions to candidates
 You should have the following for this examination:
 Drawing instruments;
 Scale rule.
 Answer ALL the questions
 State two and describe two classes of drawings (4marks)
 State and explain four aims of technical drawing. (8 marks)
 State one reason why:
 HB pencil is sharpened to conical shape
 H pencil is sharpened to chisel shape.
 State the use of the following drawing instruments (5 marks)
 Bow compass
 Clips and tapes
 French curves
 Scales
 Dividers
 Construct a plain scale in which 20mm represent 100 mm and long enough to measure up to 500mm and indicate a distance of 480 mm ( 7 marks)
 Construct a triangle whose base length is 60mm and a vertical height of 50mm and one base angle is 1050 and name the resulting triangle (6 marks)

 Define the term quadrilateral: (2 marks)
 Construct a trapezium whose two parallel sides are 65mm and 45mm and 54mm apart, and one included angle being 750 (7marks)
 Construct a circle whose radius is 27mm and indicate the following (6marks)
 segment
 sector
 normal
 tangent
 arc
 Draw the views given below in isometric (15marks)
 Draw the following views from the block shown below. (15 marks)
 Front elevation in the direction of arrow B
 End elevation in the direction of arrow A
 The Plan
 Convert the views given below to a twopoint perspective projection. (15 marks)
 Copy the figure below and dimension it fully (10marks)
MARKING SCHEME
 State two classes of drawings (4 marks)
 Artistic drawing: Express philosophical /emotional or aesthetic ideas
 Technical drawing: Shows appearance and actual size of an object. Accuracy is maintained
 State four aims of technical drawing (8 marks)
 Accuracy: Correct measurements
 Neatness : cleanliness of the drawing
 Speed: finishing drawings on time
 Technique: Manipulation of drawing instruments
 State one reason why:
 HB pencil is sharpened to conical shape
 To give good results when sketching the outlines and lettering
 H pencil is sharpened to chisel shape.
 To give good results when sketching the construction lines
 HB pencil is sharpened to conical shape
 State the use of the following drawing instruments (5 marks)
 Bow compass  For drawing large arcs and circles
 Clips and tapes  For holding the papers on the drawing boards
 French curves  (For drawing noncircular curves accurately).
 Scales  (for drawing items bigger or smaller than they are in real life).
 Dividers:  A pair of dividers is essential.
 Construct a plain scale in which 20mm represent 100 mm and long enough to measure up to 500mm and indicate a distance of 480 mm ( 7 marks)
 Construct a triangle whose base length is 60mm and a vertical height of 50mm and one base angle is 1050 and name the resulting triangle (6 marks)

 Define the term quadrilateral: (2 marks)
 Is a plane figure bounded by four straight sides with the sum of interior angles adding up to 360°
 construct a trapezium whose two parallel sides are 65mm and 45mm and 54mm apart, and one included angle being 75° (7mark)
 Define the term quadrilateral: (2 marks)
 Construct a circle whose radius is 27mm and indicate the following (6marks)
 segment
 sector
 normal
 tangent
 arc
 Draw the views given below in isometric (15marks)
 Draw the following views from the block shown below. (15 marks)
 Front elevation in the direction of arrow B
 End elevation in the direction of arrow A
 The Plan
 Convert the views given below to a twopoint perspective projection. (15 marks)
 Copy the figure below and dimension it fully (10marks)
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Download Drawing and Design Questions and Answers  Form 1 End Term 3 Exams 2023.
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