Engineering Science N2 — Document
April 2019 — N2 — Engineering Science
N2
2019
Nated Engineering
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4.3The formula used or the manipulation thereof The substitution of the given data in the formula The answer together with the correct SI unit 5. The following values MUST be used in this question paper, whenever
Q1— Section header —
1.1Define the term acceleration (1\
1.2A car maintains the following velocities over the times given: Time (s\ 11 Velocity (m/s\
1.2.1Make a neat sketch of the velocity/time graph (3\
1.2.2Describe the motion of the car from to and to (2\
1.2.3Calculate the total displacement of the car over (3\
1.2.4Calculate the deceleration of the car from to (2\
1.3A truck is brought to rest from a velocity of 80 km/h over a distance of 50 metre Determine the following:
1.3.1The deceleration of the truck (3\
1.3.2The time taken for the deceleration (1\ [15]15
Q2— Section header —
2.1Define resultant of forces (2\
2.2A light horizontal beam rests on two supports K and L as shown i n the diagram below: 500 N 0,5
2.2.1Ignore the we ight of the beam and calculate the reactions of the supports of the beam by taking moments in kN about e ach support namely
2.2.2Check your answer (2\ [10] *+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,+10
Q3— Section header —
3.1Define potential energy (2\
3.2A metal ball with a mass of 1,5 kg is thrown 2 m vertically up wards.
3.2.1Calculate the potential energy of the ball when it reaches the highest point (2\
3.2.2Calculate the kinetic energy of the metal ball as it leaves the hand by first calculating the velocity with which the ball leaves the hand (3\ [7]7
Q4— Section header —
4.13 800 3 000 Force (N 0 10 20 30 40 50 Distance (m\
4.1.1Calculate the weight of the cable from the above graph in N/m (1\
4.1.2Calculate the total work done in hoisting the lift and the cable (3\
4.1.3Calculate the power required when the lift is at from the bottom ( 20 m from the top\nd the velocity is 3 m/s. (2\
4.2A mass of 800 kg is lifted by the drum of a lifting device. The drum has a radius of 400 mm. Calculate the following:
4.2.1Torque delivered
4.2.2Work done for one revolution of the drum (2 2\ (4 [10]10
Q5— Section header —
5.1State THREE disadvantages of chain drives (3\
5.2A bicycle has a big sprocket with 36 teeth and small sprocket with 6 teeth
5.3State TWO types of lifting devices other than a differential wheel and axle (2\
5.4differential wheel and axle lifting machine has D=600 mm, d = 300 mm an
5.4.1The mechanical advantage (2\
5.4.2The velocity ratio (3\
5.4.3The efficiency of the machine (2\
5.5ressure applied by the pump in the swimming pool is alculate the equivalent depth of the pump in the water. (3\ [17]17
Q6— Section header —
6.1State THREE advantages of friction (2\
6.2object of 50 kg is placed on an incline
6.2.1Calculate the weight component parallel to the plane (2\
6.2.2Calculate the weight component perpendicular to the plane (2\
6.2.3Calculate the minimum force required to pull the object up the incline (3\ [9] 150704029
Q7— Section header —
7.1State TWO differences between heat and temperature Give your answer in
7.2A fuel with heat energy of is used in an engine that has an output power of 10 kW . T he thermal efficiency is 30% after the test ran for
7.2.1The input power of the fuel used
7.2.2The heat energy given off by the fuel
7.2.3The mass of the fuel used (3 2\ (6
7.3Give ONE advantage of steam (1\ [11]11
Q8— Section header —
8.1Name the TWO charges found in the nucleus and their charges (4\
8.2State TWO uses of electrolysis (2\
8.2Explain what is meant by superheated steam (2\ [8]8
Q9— Section header —
9.1An electrical circuit consisting of a supply voltage of is connected in series with a resistor; The resistor is also connected i
9.1.1Calculate the voltage drop across resistor (5\
9.1.2Calculate the current flowing through resistor (3\
9.1.3Calculate the current flowing through resistor (2\
9.2A copper conductor is long and has a diameter of . The resistivity of copper is . C alculate the resistance of the conductor. (3\ [13] TOTAL13
Mark Allocation
Total100 marks
Sections15 + 10 + 7 + 10 + 17 + 9 + 11 + 8 + 13 = 100 marks
Paper information
TitleDocument
SubjectEngineering Science
LevelN2
Document typeQuestion paper
Year2019
MonthApril
Pages7
Downloads2
Examination context
Decade2010s
Years ago7y
SeasonAutumn (SH)
Start dayMonday
Exam periodApril 2019
Days since exam2,748
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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