Engineering Science N1 — Document
August 2018 — N1 — Engineering Science
N1
2018
Nated Engineering
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6.3The form ula. The replacement of values. The answer and correct SI unit. 7. 8. 9.
1.1Various options are given as possible answers to the following questions. Choose the answer and write only the letter (A D\ next to the question number (1.1.1
1.1.5\n the ANSWER BOOK.
1.1.1The unit for specific heat capacity. N.m J/kg
1.1.2The symbol for an incandescent lamp.
1.1.3What is the charge of the nucleus of an atom? Negative Neutral Positive None of the above
1.1.4What type of material s resistance will stay the same if the temperature rises?
1.1.5FIGURE 1 below shows a system of forces. Identify the resultant of the system of forces. FIGURE 1
1.2Give ONE word for each of the following descriptions by choosing a word from the list below. Write only the word/term next to the question number
1.2.5\ the ANSWER BOOK. torque; power; specific heat capacity; solidification; matter
1.2.1The rate that work is done
1.2.2Anything that occupies space and has mass
1.2.3The amount of heat needed to raise the temperat ure of 1kg of a substance with 1
1.2.4The tendency of a force to cause or change rotational motion of a body
1.2.5When a substance changes from a liquid to a solid (5 1\ (5\ 60 N 80 N
1.3Choose a description from COLUMN B that matches a word in COLUMN A. Write only the letter (A E\next to the question number (1.3.1
1.3.5\in the ANSWER BOOK. COLUMN A COLUMN B
1.3.5The law of moments Speed The law of conservation of ene rgy Joule s law
1.4Indicate whether the following statements are TRUE or FALSE. Cho ose the answer and write only True or
1.4.5\ the ANSWER BOOK.
1.4.1A lifting machine is a device that uses a small force over a long distance to move a large weight over a small distance
1.4.2Time is a vector
1.4.3Mass is measured in kilograms
1.4.4An equilibrant has the same effect on a body than two or more forces
1.4.5force has magnitude and direction (5 1\ (5\ [20] TOTAL SECTION A:20
Q2— Section header —
2.1A traveler travelled from A to B according to the route in FIGURE 2. The route took 1 hour to complete. FIGURE 2 Calculate the following
2.1.1The distance traveled from A to B. (1\
2.1.2The displacement between A and B by means of vector adding. HINT : Use a scale 1 cm km
2.2A man with a mass of 95 kg walks to the back of a train at a velocity of 1,3 m/s while the train moves at a constant velocity of 45 km/h in an easterly direction. Calculate the resultant velocity of the man in m.s
2.3An athlete takes 12 second s to run 100 m at a constant velocity.
2.3.1Draw a displacement time graphic of the athlete s movement. HINT : Use scale 1 cm 10
2.3.2Read from the graphic the distance the athlete has travelled in FOUR seconds. (1\ [9 50km 20km
Q3— Section header —
3.1FIGURE 3 below shows a system of forces. Determine graphically the size and direction of the resultant and equilibrant of the system of forces. (HINT: Use scale 10 N=10 mm
3.2A wheel and axle lifting machine is used to lift a mass of 350 kg. The effort applied is 550 N, the wheel has a diameter of 350 mm and the axle has a diameter of 250 mm. Calculate the following
3.2.1Mechanical advantage (2\
3.2.2Displacement ratio (1\
3.3A force of 850 N is applied on the one end of a spanner 300 mm long. Calculate the torque applied on the nut. (3\
3.4FIGURE 4 below shows a signboard with a weight of 400 N. Determine w ith the aid of a triangle of forces the force F in the cable and force S in the support beam. (HINT: Use scale 10
3.5FIGURE 5 below shows a beam in equilibrium. Calculate the fo rce F. (3\ [15]15
Q4— Section header —
4.1A lifting machine is used to hoist a bucket of water with a mass of 25 kg out of a well, 35 m deep.
4.1.1Calculate the weight of the water. (1\
4.1.2Draw the force/distance graph of this work done. HINT : Use a scale 20 N = 10 mm and
4.1.3Use the graph and determine the work done. (1\
4.2A motor car travels at a speed of 115 km/h on a horizontal road. The force needed to keep the motorcar speed constant is 1200 N. Calculate the following
4.2.1The speed in m/s. (1\
4.2.2The power develop ed through the engine of the motor in kW. (1\
4.3Name the type of energ y in each of the following instances
4.3.1A rock rolling down an incline
4.3.2An ice cube melting
4.3.3A battery (3 1\ (3\ [10] FIGURE 5 20N10
Q5— Section header —
5.1Distinguish in your own words the difference between temperature and heat. (2\
5.2How is hea t propagated in the following phases (conditions\:
5.2.1Solids
5.2.2Liquids
5.2.3Gases
5.2.4Vacuum (4 (2\
5.3Draw a neat, labelled diagram of an optical pyrometer (disappearing filament pyrometer\. (4\
5.4A su bstance changes when heat is added or removed. Name TWO changes that can take place (The effects of heat\ (2\
5.5A bi metallic strip consists of two different types of materials. What principle does the bi metallic strip represent? (1\ .6
5.6.1The rise in temperature (The change in tem perature\ (2\
5.6.2The final temperature (1\
5.7
5.7.1The final length of the pipe (1\
5.7.2The difference in temperature (1\ [16] (15070391\ 10 T620(16
Q6— Section header —
6.1What causes matter to change phase? (1\
6.2Matter can be found in three phases namely solids, liquids and gasses. Nam ONE example of each of these phases. (3\
6.3Name the process that happens when the following phase changes takes place:
6.3.1A solid changes to a l iquid
6.3.2A gas changes to a l iquid
6.3.3A liquid changes to a s olid (3 1\ (3\
6.4FIGURE 6 below shows the structure of an ato m. Name each part of the atom. Write only the answer next to the question number (6.4.1
6.4.4in the ANSWER BOOK FIGURE 6
5.4.415070391\ 11 T620( \(J26\T Copyright reserved
Q7— Section header —
7.1Name ONE of the factors that will influence the resistance of a conductor. (1
7.2Calculate the current that flow through the element of an electric toaster with a resistance of 26 if it is connected to a 220 V supply. (2\
7.3Three resistors of 7 supply. Calculate the following
7.3.1Total resistance of the circuit (2\
7.3.2The current drawn from the su pply. (2\
7.4Name ONE way to strengthen the magnetic field around a coil. (1
7.5A stove plate has a resistance of 125 A from the supply. Determine the time required to generate 1579 kJ of heat energy. (2\
7.6When a current of 8 A flows through an incandescent lamp the power consumption is 120 W. Determine the voltage across the lamp. (2\
7.7Draw a neat label ed drawing of the magnetic field around a current carrying conductor. (3\
7.8Na me ONE practical example where solenoids are used. (1
7.9If the temperature rises what effect will there be on the resistance of the following substances?
7.9.1A conductor such as copper (1\
7.9.2Isolation materials such as mica (1\
7.10Describe the working of a single stroke doorbell in words. (3\ [21] TOTAL SECTION B: 80 GRAND TOTAL:21
Mark Allocation
Total100 marks
Sections20 + 15 + 10 + 16 + 9 + 21 = 91 marks
Paper information
TitleDocument
SubjectEngineering Science
LevelN1
Document typeQuestion paper
Year2018
MonthAugust
Pages12
Downloads3
Examination context
Decade2010s
Years ago8y
SeasonWinter (SH)
Start dayWednesday
Exam periodAugust 2018
Days since exam2,993
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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