Engineering Science N2 — Document
April 2018 — N2 — Engineering Science
N2
2018
Nated Engineering
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4.1The formula used or the manipulation thereof 4. 2 The substitution of the given data in the formula
4.3
Q1— Section header —
1.1Define each of the following terms:
1.1.1Velocity
1.1.2Acceleration (2 1\ (2\
1.2The velocity time graph below represents the motion of bus from rest till 31s has elapsed.
1.2.1Calculate the acceleration of the bus in the first 6 (2\
1.2.2Describe the motion of the bus from 15 to 23 and its direction (2\
1.2.3Calculate the displacement of the bus from 0 s to 31 o NOT use the equations of motions. Use the graph provided. (3\
1.2.4Calculate the average velocity of the bus throughout the journey (2\
1.3A motorist drives at 30 m/s along a straight road. The speed limit on the road is 72 km/h . The motorist applies brakes 25 m before crossing a speed trap. What must the car' s acceleration be to reduce its
Q2— Section header —
2.1Which are the TWO graphical methods that can be used to determine the resultant of two
2.2
2.2.1Determine the resultant of the forces graphically using a parallelogram method and clearly indicate the most suitable scale used (5\
2.2.2What is the equilibrant of the system (1\
2.3Define couples. (2\
2.4Name two practical examples of couples. (2\ [12]12
Q3— Section header —
3.1State the law of conservation of energy. (2\
3.2A motor car with a mass of 40 kg climb an inclined plane which forms an angle of 30 with the horizontal and has a displacement of 100 m from
3.2.1Calculate the potential energy of the motor car at the top of the incline plane (2\
3.2.2Calculate the kinetic energy of the motor car when it rolls down the plane from the top starting from rest when the car is at the height of 30m (4\
3.2.3Calculate the total mechanical energy of the motor car at the bottom of the plane when it has travelled 100m down from the height as in 3.2 (2\ [10]10
Q4— Section header —
4.1Define power. (1\
4.2A bucket has a mass of 50 kg as it carries bricks and it is tied wit h a rope which has a weight of 20 N/m
4.2.1Make a neat labelled sketch of th e force/distance graph using the information above and show all the important points.
4.2.2Calculate the work done in hoisting the bucket up the building to the end of the rope. (2 3\ (6\
4.3A motorcycle has a wheel with a radius of 400 mm . The turning force applied by the wheel on the tar is 1 000 N. Calculate the torque executed by the wheel. (2\ [9]9
Q5— Section header —
5.1Define velocity ratio of a lifting device (2\
5.2Name THREE advantages of belt drives. (3\
5.3A differential wheel and axle lifting device ha an effort distance of 600 mm and load distances of = 300 m and d
5.3.1Calculate the mechanical advantage of the lifting device (2\
5.3.2Calculate the velocity ratio of the lifting device (3\
5.3.3Calculate the efficiency of the lifting device (2\
5.4A container full of water has a mass of 1 000 kg and a volume of 10 m he
Q6— Section header —
6.1Define coefficient of friction. (1\
6.2A body 5 kg in mass is pulled up an incline plane. The incline plane has an angle of 40 formed between it and the horizontal . I
6.2.1Calculate the weight component parallel to the plane
6.2.2Calculate the weight component perpendicular to the plane
6.2.3Calculate the frictional force
6.2.4Calculate the minimum force needed to pull the body up the incline (4 2\ (8\ [9]9
Q7— Section header —
7.1Give TWO forms of combustibles. (2\
7.2A 40 kg steel rod with a temperature of 80 is immersed in water at 20 C.
7.3Ice at 20 changes to water
Q8— Section header —
8.1Name the THREE subatomic particles and their charges. (6\
8.2How could distilled water be converted to an electrolyte? (2\ [8] 150704028
Q9— Section header —
9.1An electrical circuit consist of a supply of 12 V and is connected in series with an ammeter and two parallel external
9.1.1Briefly differentiate , without calculations, between the magnitudes of currents that flow in each resistor connected in parallel (2\
9.1.2Calculate the total resistance of the circuit (3\
9.2Calculate the resistance of a copper conductor with a length of 25 m and a diameter of 1 .5 mm at 20 (3\
9.3Name THREE practical applications of mutual inductance. (3\ [11] TOTAL: 100 1507040211
Mark Allocation
Total100 marks
Sections15 + 12 + 10 + 9 + 15 + 9 + 11 + 8 + 11 = 100 marks
Paper information
TitleDocument
SubjectEngineering Science
LevelN2
Document typeQuestion paper
Year2018
MonthApril
Pages8
Downloads3
Examination context
Decade2010s
Years ago8y
SeasonAutumn (SH)
Start daySunday
Exam periodApril 2018
Days since exam3,114
About Engineering Science examination preparation
Engineering Science combines physics principles with engineering applications. The examination covers mechanics, thermodynamics, electricity, and materials science at the relevant N-level.
How to use this resource for revision
A TVET past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?
For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.
applying physics principles
selecting appropriate formulae
performing calculations with units
interpreting engineering scenarios
explaining scientific reasoning
A practical revision approach
Create a formula sheet organised by topic. The memorandum rewards correct formula identification, proper substitution, and accurate unit handling — always write the formula before substituting values.
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