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Tech Grade 8
Test Description: Tech
Instructions: Answer all questions to get your test result.
1) Unaligned forces pushing one part of a body in one direction, and another part the body in the opposite direction
A
Compression
B
Hatching
C
The wedge
D
Shearing force
2) A squeezing force.
A
Compression
B
Hatching
C
The wedge
D
Shearing force
3) An inclined plane or ramp.
A
Shearing force
B
Compression
C
Hatching
D
The wedge
4) A technique used by artists to enhance a drawing and make it look like more realistic by drawing parallel lines.
A
Hatching
B
Shearing force
C
The wedge
D
Compression
5) A solid beam that is supported only on one Side
A
Ink washes
B
Cantilever
C
Compression
D
Lintel
6) List THREE causes of structural failure.
A
Bending
B
Toppling over
C
All of the above
D
Fracture
7) Describe a queen post and state two of its uses in a frame structure.
A
They span for longer distance and thus it is able to be used for bigger building
B
All of the above
C
They are able to support a heavier load
D
Queen post has two supporting beams that are placed between tie beams
8) Mention TWO differences between suspension and an arch bridge
A
No. 1 and 2
B
Neither
C
In a suspension bridge the weight is supported from cables overhead.
D
The cables are under tension.
9) Mention TWO differences between suspension and an arch bridge
A
In an arch bridge the weight is supported by struts and arch underneath.
B
Neither
C
No. 2 and 3
D
The arch and struts are under compression.
10) What is meant by ‘meshing of gears’?
A
The teeth will break
B
Meshing mean that gears are able to link or interlock with their teeth
C
Meshing makes the gears move
D
Gears are stuck
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