Engineering Science N1 — Document
April 2019 — N1 — Engineering Science
N1
2019
Nated Engineering
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Q1— Section header —
1.1Choose a description from COLUMN B that ma tches a word in COLU MN A. Write only the letter (A \next to the question number (1
1.1.5Scalar Resultant Kinetic energy Temperature Insulator
1.2Choose a term for each of the following descriptions from the list below. Write only the term next to the question number (1. 2. 1.
2.5in the ANSWER BOOK. pecific heat capa city; power; displacement ratio; Ohm's law; heat capacity; Lenz's Law; torque; mechanical advantage; work
1.2.1The current in a closed circuit is directly proportional to the potential difference and inversely proportional to the resist ance.
1.2.2The tendency of a force to cause a change in rotational motion of a body
1.2.3The quantity of heat required to increase the temperature of 1 kg of a substance by 1
1.2.4When a force acts on an object and the object moves i n the direction of the force
1.2.5The ratio between the load and the effort of a machine (5 1\ (5 15070391
1.3Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only ' rue' or ' alse' next to the question nu mber (1.
3.11.
3.5\ the ANSWER BOOK.
1.3.1Parallelogram of forces is when two pulling forces acting on a point can be represented in magnitude and direction by the two adjacent sides of a parallelogram.
1.3.2Velocity is the rate at which an object moves in a direction.
1.3.3Triangle of forces is when three forces are acting on a point that is not in equilibrium they can be represented in magnitude and direction by the sides of a triangle taken in sequence.
1.3.4 Gravesand' s ball and ring is used to prove that metal expands when cooled down.
1.3.5Liquid particles have less energy than solid particles and more energy than gas particles. (5 1\ (5 1.
4.11.
4.5\n the ANSWER BOOK.
1.4.1From the list below choose the IEC symbol for a variable resistor:
1.4.2Three resistors with different values are connected in series heir total resistance will be:
4.3Which of the following factors does NOT influence the resistance of a conductor
1.4.4Joule' s law state The heat developed when
1.4.5Which of the following factors wi ll NOT influence the resistivity of a substance
Q2— Section header —
2.1.1Calculate the resultant velocity of the ship.
2.1.2Determine the direction of the resultant veloc ity. (2 1\
2.2Graphically determine the resultant force of the vector diagram in FIGURE 1 below FIGURE 1 (3\
2.3A brick falls from the top of a building, it takes 2 8 seconds to reach the ground. Assume wind r sistance to be negligible.
2.3.1Use a scale of 2 cm = 1 s and 2 cm = 10 m.s to plot a graph for the falling brick
2.3.2Calculate the velocity at which the brick strikes the ground. (1\
2.4In your own words describe the difference between mass and weight (2\ 15070391
2.5Convert a mass of 165 kg to weight if the gravitational acceleration on the moon is 1.6 m.s (1\
2.6An astronaut's weight is 833 N. What is his mass on the earth? [12
Q3— Section header —
3.1A force act ing in on a body can have certain effects on that body. Name TWO of those effects. (2\
3.2A single rope pulley system has three pulleys in the upper block and two pulleys in the lower block. It lifts a mass of 83 kg vertical upwards through 2,5 m.
3.2.1Draw a neat labelled sketch of the pulley system (3\
3.2.2Calculate the mechanical advantage of the system if the effort it takes to move the mass is 162 N. (1\
3.2.3Calculate the distance the effort must move to move the mass 2,5 m. (1\
3.3FIGURE 2 shows the resultant of two forces of which one is unknown. The resultant of these two forces is 92 N. Determine the value of the unknown force A and the angle it has with the
3.4Calculate the magnitude of the unknown force B in FIGURE 3. FIGURE 3 (2\
3.5Name TWO applications of turning moments. (2\ [13]13
Q4— Section header —
4.1Describe the energy transformati on in the two figures below. xample Heat energy to electrical energy\
4.1.2(2 1\ (2\ 15070391
4.2A crane lifts a pallet of bricks to the third level of a building. The bricks have a mass of 200 kg and has been lifted to a he ight of 6 m.
4.2.1Draw a force distance graph of the movement. (3\
4.2.2Calculate the work done of the movement. (2\
4.3A motor car travels at a constant speed of 80 km/h. It has a tractive resistance of 2 1 kN. Calculate the power nee ded to maintain the speed. (2\
4.4Define the law of conservation of energy (1 [10]10
Q5— Section header —
5.1escribe the difference between heat and temperature.
5.2Draw a neat labelled sketch of an alcohol thermomete r. (3\
5.3Name TWO advantages of a mercury thermometer.
5.4A disappearing filament pyrometer (or optical pyrometer\ is a measuring instrument that measure high temperatures. Write down ONE example where such a pyrometer is used.
5.5During an experiment on an aluminium alloy bar to determine the coefficient of linear expansion the following results were obtained: Initial temperature = 15
5.5.2Calculate the final length of the bar. (2 1\
5.7When heat is applied to a substance it will have certain effects on the substance Write down an example whe re there is a change in colo
5.8Heat propagation in substances depend s on the phase it is in. Name the type of heat propagation in a liquid. (1\
5.9Draw a neat labelled sketch of a thermocouple. (2\ [15]15
Q6— Section header —
6.1Heat can change the motion of particles within matter. Heat can also change the phase of matter. Describe the movement of particles in the following phases
6.1.1Solid
6.1.2Liquid
6.1.3Gas (3 1\ (3\
6.2Name TWO properties of a solid. (2\
6.3Draw a neat, labelled sketch of the s tructure of a hydrogen atom. Indicate the charge of each of the particles. (3\
6.4Complete the following sentences by filling in the missing word or words Write only the words next to the question number (6.4.1
6.4.3\in the ANSWER BOOK. 6. .1 A s olid to form a liquid.
6.4.2 A liquid to form a gas.
6.4.3 A gas to form a liquid. (3 1\
Q7— Section header —
7.1Indicate whether each of the following is a CONDUCTOR or an INSULATOR. Choose the answer and wri te only ' Conductor ' or ' Insulator
7.1.4\ the ANSWER BOOK.
7.1.1PVC
7.1.2Bakelite
7.1.3Bronze
7.1.4
7.2Name a source of each of the following types of currents:
7.2.1Alternating current (AC\
7.2.2Direct current (DC\ (2 1\
7.3An electric heater with a resistance of 98 is connected to a supply of 220 V. Calculate the current flow through the heater. (2\
7.4A circuit consists of three resistors connected in parallel hey are then connected to a battery. The values of the resistors are 35 , 45 and 16 respecti
7.4.1Calculate the total r sistance of the circuit.
7.4.2Draw the circuit and include an ammeter that would measure the total current. (2 2\ (4
7.5The resistance of a conductor can be influenced by three main factors. Discuss how the following factors will influence the resistance of a conductor.
7.5.1The length of the conductor
7.5.2The temperature of the conductor (2 1\ (2
7.6change in temperature has an influence on the resistance of materials. Discuss what influence a decrease of temperature will have on an alloy like German silver. (1\ .7 The heating element of an electrical geyser
7.8The filament of an electrical lamp has a resistance of 450 . It is connected to a 220 V power supply. Calculate the power consumption of the lamp. (2\
7.9Define leming' s right hand rule (1\
7.10Name ONE practical example where a solenoid is used. (1\ [19 TOTAL SECTION B: 80 GRAND T
Mark Allocation
Total100 marks
Sections20 + 13 + 10 + 15 = 58 marks
Paper information
TitleDocument
SubjectEngineering Science
LevelN1
Document typeQuestion paper
Year2019
MonthApril
Pages11
Downloads4
Examination context
Decade2010s
Years ago7y
SeasonAutumn (SH)
Start dayMonday
Exam periodApril 2019
Days since exam2,751
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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