Engineering Science N1 — Document
August 2019 — N1 — Engineering Science
N1
2019
Nated Engineering
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5.3Formula Replacement of values Answer and correct SI unit Gravitational acceleration (g\ should be taken as 9,8 m.s Sketches must be neatly done with pencil.
Q1— Section header —
1.1Give ONE word for each of the following descriptions by choosing a word from the list below. Write only the word next to the question number (1.
1.5in the ANSWER BOOK. potential energy; equilibrant; scalar; conductor; kinetic energy; resultant; vector; temperature
1.1.1hysical quantity which has only magnitude
1.1.2ingle force that will balance two or more forces
1.1.3nergy a body possesses due to its motion
1.1.4Degree of hotness or coldness of a body
1.1.5Substance through which electrical current move easily (5
1.2Choose a symbol from COLUMN B that ma tches a term in COLU MN A. Write only the letter (A \ next to the question number (1.
1.2.5Volt meter Resistor Ammeter Switch Variable resistor (5 (5\
3.5\ in the ANSWER BOOK.
1.3.1pecific heat capacity Amount of heat energy needed to raise the temperature of a substance by 1 Ability of a body to do work due to the flow of electrical current Amount of heat energy needed to raise the temperature of 1 kg
1.3.2Which of ONE the following is NOT an effect of heat on a body? Change in temperature Change in length Change in type of material Change in resistance
1.3.3aw of moments: Ratio between distance moved by effort and distance moved by load System of forces is in balance if sum of clockwi se moments is equal to anti clockwis
1.3.4A force can be regarded as a vector due to ONE of the following reasons Force has only magnitude Force has only direction Force has magnitude and direction Force has
1.3.5
1.4Indicate whether the following statements are TRUE or FALSE. Cho ose the answer and write only 'T rue' or alse' next to the question number (1.
4.5\ in the ANSWER BOOK.
1.4.1Displacement is the actual route a body follow
1.4.2An equilibrant is that single force that will balance two of more forces.
1.4.3Power is when a force is applied on a body and the body is displaced through a distance.
1.4.4The particles in a solid are far apart and move very fast.
1.4.5The lo nger the conductor the lower it s resistance. (5 [20] TOTAL SECTION A:20
Q2— Section header —
2.2FIGURE 1 below show the movement of three hikers (A, B and C\ on a hiking trail. FIGURE 1
2.2.1Which ONE of the three hikers ha the highest speed? (1\
2.2.2Calculate the average speed of hiker B. (1\
2.3A train travels 80 km in 1 hr 10 min. Calculate the average speed of the train. (1\
2.4A rock with a mass of 2,4 kg falls from a building. Calculate the force with which the rock hits the ground. (1\
2.5In an experiment about gravitation two balls are released from a three storey building. If we assume the wind factor is zero, they hit the ground at th e same instance. The time it ta the balls to reach the ground is 1,4 seconds.
2.5.1Draw a neat labelled velocity time graph of the movement. Hint : Use scale 5 cm = 1 second and 5 cm = 10 m.s (2\
2.5.2hat does the gradient represent In the graph drawn in
Q2— Section header —
2.6Briefly d escribe the relationship between the mass of a body and its weight. (1\
2.7An astronaut weighs 282 N on the planet Mars. Calculate the mass of the astronaut if the gravitational acceleration of Mars is 3,711 m.s (1\ [11]11
Q3— Section header —
3.1Define triangle of forces. (1\
3.2Use Bow' s notation and draw and label the triangle of forces of the THREE forces shown in FIGURE 2 Hint
3.3Graphically determine the equilibrant of the TWO forces shown in FIGURE 3 by using the parallelogram method. Hint : Use
3.4Make a neat labelled sketch of a heel and axle lifting machine. The wheel has a diameter of 350 mm and the axle has a diameter of 85 mm. Use scale 1
3.5A lever is used to lift a motorcar engine with a mass of 210 kg through a height of 300 mm. An effort of 425 N is applied at the other end of the lever and moves through a distance of 2 m. Calculate the following:
3.5.1Mechanical advantage of the lever (2\
3.5.2Velocity ratio of the lever (2\
3.6A bolt is tightened by using a 380 mm long spanner. A force of 45 N is applied to the end of the spanner. Calculate the torque at which the bolt is fastened. (2\
3.7Define torque (1\ [14]14
Q4— Section header —
4.1Energy cannot be created or destroyed. Write down the transformation of energy of a locomotive engine from stationary to moving forward (1\
4.2A man of 90 kg climbs 30 steps in 2,5 minutes ach step is 300 mm high.
4.2.1Plot a force/distance graph of the work done. Use scale 100 N = 1 cm and 1 m = 1 cm. (3\
4.2.2Determine from the graph the work done. (1\
4.2.3Calculate the power required. (1\
4.3A car has a mass of 500 kg and travels 1,4 km in 1,5 minutes. Calculate the following:
4.3.1ork done in mega joules (2\
4.3.2ower in kilo att (2\ [10]10
Q5— Section header —
5.1Distinguish between heat and temperature
5.2Describe an alcohol thermometer w ith the aid of a neat labelled sketch (3\
5.3Name ONE advantage and ONE disadvantage of a mercury thermometer.
5.4Stat the propagation of heat in liquids and in vacuum.
5.5Make a neat labelled sketch of a vanishing filament pyrometer (o ptical pyrometer\
5.6Calculate the quantity of heat which is required to increase the temperature of kg water from 25 C to 25 C. Write your answer in mega joules. The specific heat capacity of the water is 4200 J/kg
5.7A steel beam is 4290 mm long at 7 C and 4310 mm long at 35 C. Calculate the expansion of the beam in meter. [15]15
Q6— Section header —
6.1Name the THREE phases of matter and give example of each
6.2Make a neat labelled sketch of an atom and indicate the charges.
6.3Describe the effect of heat on the motion of particles, using water as an example. (3\
6.4What happens to the volume of most substances when heated? [11]11
Q7— Section header —
7.1Giv ONE example of a conductor of electricity. (2\
7.2What is the difference between direct current alternating current (2\
7.3Name the factor, other than temperature and type of material that determine the quantity of current flow in a conductor if the tension ( olt\ stays the same. (1\
7.4Name TWO types of alloys that ha ve few effects, or no effect on its resistance if the temperature changes. (2\
7.5Two parallel resistors of 5 and 10 are connected to a 12 V battery.
7.5.1Make a neat labelled sketch of the circuit. (1\ Calculate the following:
7.5.2Total resistance of the circuit (2\
7.5.3Current flow in the circuit (2\
7.5.4Total power of the ci rcuit (2\
7.6What is the difference between a good and bad conductor regarding resistivity? (1\
7.7Determine the time required to generate 225 kJ of heat energy when a current of 5 A flows through the element of an electric kettle which has a resistance of
7.8Give TWO ways of intensifying the magnetic field in a solenoid. (2\ [19 TOTAL SECTION B: GRAND TOTAL:
Multiple Choice Options
1C)Write your answer in
Mark Allocation
Total100 marks
Sections20 + 11 + 14 + 10 + 15 + 11 = 81 marks
Paper information
TitleDocument
SubjectEngineering Science
LevelN1
Document typeQuestion paper
Year2019
MonthAugust
Pages11
Downloads2
Examination context
Decade2010s
Years ago7y
SeasonWinter (SH)
Start dayThursday
Exam periodAugust 2019
Days since exam2,629
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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