Engineering Science N5 — Document
April 2019 — N5 — Engineering Science
N5
2019
Nated Engineering
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Q1— Section header —
1.1Give ONE term for each of the following descriptions. Write only the term next to the question number (1.1.1
1.1.5\n the ANSWER BOOK.
1.1.1When different substances are placed next to each other, the movement of their molecules may cause them to form one homogeneous mixture.
1.1.2The amount of light radiated by a black container with a surface area of 100 mm filled with liquid platinum allowed to set at 500
1.1.3The intensity of an internal force acting at a point in an object
1.1.4When a wave does not move forward through a medium but is reflected just as much as it is transmitted so that the total movement of the wave is zero
1.1.5
1.2Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only True or False
1.2.5\ the ANSWER BOOK.
1.2.1If the elasticity limit of a metal is exceeded, the metal will return to its original s hape when the load is removed
1.2.2Adiabatic compression takes place so rapidly that heat cannot be transferred to its surroundings and the temperature of the system will decrease
1.2.3When incident light rays pass through a lens which cause them to become parallel, the rays will no longer overlap after dispersion
1.2.4In an alternating current generator the curr ent continuously changes direction with each 180 that the conductor turns.
1.2.5The lateral force of attraction between molecules of gase s that are on the surface of a liquid cause the liquid to behav e as if it was covered with a
1.3Name TWO ways to measure the surface tension of a liquid. (2\ 15070115
1.4he following re sults were obtained uring an experiment to investigate Boyle s law
1.4.1Find the possible values of A and B (2\
1.4.2Give Boyle s law in words. (3\
1.4.3Draw a graph which best describe Boyle s law. (3\
1.5Determine the force with which two masses of 20 kg and 50 g respectively attract one another when they are 225 cm apart. (2\
1.6Complete the following sentences by writing the missing word or words next to the question number (1.6.1
1.6.3\n the ANSWER BOOK.
1.6.1of a sound depend on the amplitude of the wave.
1.6.2One part red to two parts peacock blue will produce light.
1.6.325
Q2— Section header —
2.1arbon dioxide is compressed at different temperatures uring the liquefaction of a gas as shown in the graph
2.1.113 C line at point F when meniscus is formed
2.1.221 C line
2.1.331, C line 15070115
2.1.435 C line
2.1.548 C line
2.1.6
2.2Give TWO exa mples of a semi permeable membrane. (2\
2.315 g of gas is a by product at water purification p lant in Tza
2.3.1as constant for this gas (3\
2.3.2hange in internal energy (5\
2.3.3Wo rk done by the gas while expanding (3\ [25]25
Q3— Section header —
3.1Study the diagram of t he image formation in a concave curved mirror below Use the diagram to answer the following questions:
3.1.1List the meaning of B, C, F , I and S (5\
3.1.2Briefly explain what happen to th e object between F and S. (4\ 15070115
3.2An object is placed at a distance of 300 mm from a concave mirro r with a focal length of 200 m. Determine the
3.2.1osition of the image (2\
3.2.2ature of the image (2\
3.2.3ize of the image formed if th e height of the object is 40 mm (3\
3.3A combination of two lenses in contact is built up of lenses with radii of curvature of 1 ,6 m and 1 m an d the index of refraction n = 1, 8.
3.4In a diffraction grating the lines are 500/mm, the two spectra are 180 mm apart and the scr een is 240 mm from the grating. alculate
3.4.1ngle by which red light deviated
3.4.2
3.5Explain the term short sighted person (2\ [25]25
Q4— Section header —
4.1A string is 4 m long and has a mass of 8 g. One end of the string hangs over a drum and is f astened to a copper mass of 16 k g. The density of the
4.1.1Tension exerted on the string (1\
4.1.2Velocity of the transmission of the sound along the string (2\
4.1.3avelength of the waves emitted if the note has frequency of 150 Hz (2\
4.1.4Young s modulus of elasticity for the copper metal (2\ 15070115
4.2
4.2.1ew volume of the gas (3\
4.2.2Mass of th e gas if the gas constant R = 0,17 kJ/k g. (2\
4.2.3ensity of the gas (2\
4.3Briefly explain the difference between:
4.3.1Cohesive force and adhesive force
4.3.2
4.4Given:
4.4.1What is this formula used for? (1\
4.4.2Give the meaning of each of the following components of the formula: (a\ (b\ (c\ (d\
Topics Identified
1
Business Plan
Mark Allocation
Total100 marks
Sections25 + 25 + 25 + 25 = 100 marks
Paper information
TitleDocument
SubjectEngineering Science
LevelN5
Document typeQuestion paper
Year2019
MonthApril
Pages10
Downloads2
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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