ABSA-PE -3rd Class A1-Final Review
Exam and All Correct Answers 2025-
2026 Updated.
1. In a right-angle triangle, the sine of an acute angle is equal to: - Answer opposite side /
hypotenuse
If a right-angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm,
the length of the opposite side is: - Answer 57.48 mm
In the equation 0.004 + D = 0.0042, the value of D is: - Answer 0.0002
As the cosine decreases, the - Answer value of the angle increases
Any two angles whose sum is 90° are: - Answer complementary angles
One is the trigonometric value of: - Answer A. sine of 90°
B. cosine of 0°
C. tangent of 45°
A automobile travels at 60 miles per hour. Expressed in metres per second, this would be
equivalent to: - Answer 26.81 m/s
The force that is equal in magnitude but opposite in direction to the resultant force is called: -
Answer the equilibrant
A scalar quantity is one which has only magnitude and can be fully described by: - Answer a
number with the necessary unit
A body can be put into equilibrium by applying an additional force equal in magnitude but
opposite in direction to the: - Answer resultant
A displacement of 9 m north of point A, and another of 6 m west of point A can be added to
give a resultant displacement from point A of: - Answer 10.8 m N of W
The moment of a force about a point is: - Answer a twisting or turning effect
, When the co-efficient of friction increases and the force between two surfaces remains
constant, the friction force will: - Answer increase
A body having a gravitational force of 2000 N, is pulled along a horizontal surface at constant
speed by a rope that makes an angle of 20° above the horizontal. If the pull on the rope is 150
N, the coefficient of sliding friction is: - Answer 0.0723
Energy can be: - Answer transformed to different forms
Velocity ratio is: - Answer ideal mechanical advantage
A 1 N weight has a kinetic energy of 1 J when its speed is: - Answer 4.4 m/s
The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of
7 would be: - Answer 70 MPa
According to Hooke's Law, the stress in an elastic body is directly proportional to the strain if: -
Answer the elastic limit of the material is not exceeded
The factor of safety is always expressed: - Answer as a ratio
When calculating the ultimate stress of a material, we should: - Answer divide the maximum
load by the original cross-sectional area
Safe working stress is determined by: - Answer dividing the ultimate strength by the factor of
safety
A 6 m long cantilever beam carries a concentrated load of 45 kN at its free end. What is the
shear force at the wall? - Answer 45 kN
When classifying beams, the term simple beam refers to a beam: - Answer that is supported
at two ends
The term _____ is used as a measure of the quantity of matter. - Answer mass
A 10 m long steel pipe when heated to increase its temperature by 85 °C, will expand
approximately: - Answer 1 cm
Exam and All Correct Answers 2025-
2026 Updated.
1. In a right-angle triangle, the sine of an acute angle is equal to: - Answer opposite side /
hypotenuse
If a right-angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm,
the length of the opposite side is: - Answer 57.48 mm
In the equation 0.004 + D = 0.0042, the value of D is: - Answer 0.0002
As the cosine decreases, the - Answer value of the angle increases
Any two angles whose sum is 90° are: - Answer complementary angles
One is the trigonometric value of: - Answer A. sine of 90°
B. cosine of 0°
C. tangent of 45°
A automobile travels at 60 miles per hour. Expressed in metres per second, this would be
equivalent to: - Answer 26.81 m/s
The force that is equal in magnitude but opposite in direction to the resultant force is called: -
Answer the equilibrant
A scalar quantity is one which has only magnitude and can be fully described by: - Answer a
number with the necessary unit
A body can be put into equilibrium by applying an additional force equal in magnitude but
opposite in direction to the: - Answer resultant
A displacement of 9 m north of point A, and another of 6 m west of point A can be added to
give a resultant displacement from point A of: - Answer 10.8 m N of W
The moment of a force about a point is: - Answer a twisting or turning effect
, When the co-efficient of friction increases and the force between two surfaces remains
constant, the friction force will: - Answer increase
A body having a gravitational force of 2000 N, is pulled along a horizontal surface at constant
speed by a rope that makes an angle of 20° above the horizontal. If the pull on the rope is 150
N, the coefficient of sliding friction is: - Answer 0.0723
Energy can be: - Answer transformed to different forms
Velocity ratio is: - Answer ideal mechanical advantage
A 1 N weight has a kinetic energy of 1 J when its speed is: - Answer 4.4 m/s
The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of
7 would be: - Answer 70 MPa
According to Hooke's Law, the stress in an elastic body is directly proportional to the strain if: -
Answer the elastic limit of the material is not exceeded
The factor of safety is always expressed: - Answer as a ratio
When calculating the ultimate stress of a material, we should: - Answer divide the maximum
load by the original cross-sectional area
Safe working stress is determined by: - Answer dividing the ultimate strength by the factor of
safety
A 6 m long cantilever beam carries a concentrated load of 45 kN at its free end. What is the
shear force at the wall? - Answer 45 kN
When classifying beams, the term simple beam refers to a beam: - Answer that is supported
at two ends
The term _____ is used as a measure of the quantity of matter. - Answer mass
A 10 m long steel pipe when heated to increase its temperature by 85 °C, will expand
approximately: - Answer 1 cm
