Engineering Mock 2023

WASSCE style · Study mode

Engineering Mock 2023

Question 1 of 50

The company that distributes electricity in southern Ghana is

A. ECG B. VRA only C. GWCL D. GNPC

Question 2 of 50

CAD stands for

A. Computer-Aided Design B. Central Automated Drawing C. Computer Analogue Device D. Construction And Design

Question 3 of 50

3D printing builds objects by

A. adding material layer by layer B. cutting away material C. casting in moulds only D. welding sheets

Question 4 of 50

An embedded system is

A. a computer built into a device to perform a specific task B. a desktop PC C. a server farm D. a spreadsheet

Question 5 of 50

Civil engineers mainly design

A. computer chips B. roads, bridges and buildings C. medicines D. clothes

Question 6 of 50

Mechanical engineers mainly work with

A. crops B. legal contracts C. machines and mechanical systems D. paintings

Question 7 of 50

Testing a prototype helps engineers to

A. avoid feedback B. skip design C. increase costs only D. find and fix problems before production

Question 8 of 50

Brainstorming in the design process is used to

A. test products B. generate many possible solutions C. sell products D. calculate taxes

Question 9 of 50

Convert 2.5 kN to newtons.

A. 25 N B. 250 N C. 2,500 N D. 25,000 N

Question 10 of 50

The SI unit of energy is the

A. newton B. watt C. volt D. joule

Question 11 of 50

Convert 500 mm to metres.

A. 50 m B. 5 m C. 0.5 m D. 0.05 m

Question 12 of 50

Tension in a member means it is being

A. pushed B. pulled C. twisted D. bent

Question 13 of 50

The moment of a 20 N force acting 0.5 m from a pivot is

A. 20.5 N m B. 40 N m C. 10 N m D. 0.025 N m

Question 14 of 50

Corrosion of iron can be prevented by

A. leaving it outdoors B. wetting it C. heating it D. painting, galvanising or oiling

Question 15 of 50

An inclined plane reduces the

A. load B. work done C. height D. effort needed to raise a load

Question 16 of 50

Heat transfer through a metal rod is by

A. conduction B. convection C. radiation D. evaporation

Question 17 of 50

Sustainable engineering aims to

A. meet needs while reducing environmental harm B. use as many resources as possible C. ignore waste D. avoid recycling

Question 18 of 50

A diode in a circuit allows current to flow

A. in one direction only B. in both directions equally C. only when cold D. only at night

Question 19 of 50

The total resistance of 2 Ω, 4 Ω and 6 Ω in series is

A. 12 Ω B. 1.09 Ω C. 48 Ω D. 6 Ω

Question 20 of 50

A switch in a circuit is used to

A. open or close the circuit B. store energy C. measure current D. produce light

Question 21 of 50

Solar thermal collectors are used mainly to

A. heat water B. generate wind C. store gas D. pump oil

Question 22 of 50

Tidal energy comes from

A. the rise and fall of the sea B. wind C. the sun directly D. coal

Question 23 of 50

An energy-efficient refrigerator has

A. a higher energy rating label B. a lower rating C. no label D. more noise

Question 24 of 50

Efficiency of a motor that converts 800 J of 1,000 J input into useful work is

A. 80% B. 20% C. 125% D. 8%

Question 25 of 50

A design specification should be

A. measurable and clear B. vague C. secret D. unlimited

Question 26 of 50

Insulating a building reduces

A. heat transfer and energy use for cooling B. light C. water supply D. air quality

Question 27 of 50

An energy audit identifies

A. where energy is wasted and how to save it B. the cost of food C. the number of staff D. tax owed

Question 28 of 50

The national electricity grid

A. transmits power from generating stations to consumers B. stores all electricity C. produces water D. carries gas

Question 29 of 50

Electricity is transmitted at high voltage to

A. reduce energy losses in the cables B. make it brighter C. increase current D. make it safer at home

Question 30 of 50

A thermal power plant generates electricity by

A. burning fuel to make steam that drives turbines B. using sunlight directly C. using wind D. using tides

Question 31 of 50

Iteration in design means

A. repeating the design cycle to improve the product B. stopping after one try C. copying another design D. ignoring tests

Question 32 of 50

A design constraint is

A. a limit the design must work within, such as budget B. a design feature C. a finished product D. a test result

Question 33 of 50

A PLC is commonly used to

A. control machines in factories B. write essays C. browse the web D. play music

Question 34 of 50

An actuator

A. converts a control signal into movement B. measures temperature C. stores data D. displays images

Question 35 of 50

A microcontroller such as the Arduino contains

A. a processor, memory and input/output pins on one chip B. only a battery C. only a screen D. a hard disk

Question 36 of 50

Precision of a measurement refers to

A. how close a value is to the true value B. how close repeated measurements are to each other C. the unit used D. the instrument's cost

Question 37 of 50

A beam supported at both ends is a

A. arch B. cantilever C. column D. simply supported beam

Question 38 of 50

Arches are strong because they

A. are always steel B. are made of glass C. have no supports D. transfer loads mainly as compression

Question 39 of 50

Stainless steel resists rusting because it contains

A. copper B. chromium C. tin D. lead

Question 40 of 50

Bronze is an alloy of copper and

A. iron B. zinc C. tin D. lead

Question 41 of 50

A wheelbarrow is an example of a

A. first-class lever B. second-class lever C. third-class lever D. pulley

Question 42 of 50

Tweezers are an example of a

A. second-class lever B. first-class lever C. third-class lever D. screw

Question 43 of 50

Work done = force × distance moved

A. perpendicular to the force B. in the direction of the force C. in any direction D. only upward

Question 44 of 50

The pressure in a hydraulic system is 200 kPa acting on a piston of 0.01 m². The force is

A. 200 N B. 20,000 N C. 2,000 N D. 20 N

Question 45 of 50

Bernoulli's principle explains

A. how faster-moving fluid has lower pressure B. why ice melts C. how magnets work D. why sound echoes

Question 46 of 50

Life-cycle assessment examines a product's environmental impact

A. from raw materials to disposal B. only during use C. only at sale D. only at disposal

Question 47 of 50

Engineers must avoid conflicts of interest because they

A. reduce costs B. increase safety C. can bias professional judgement D. improve design

Question 48 of 50

A mini-grid supplies electricity to

A. a local community not connected to the national grid B. the whole country C. only factories abroad D. satellites

Question 49 of 50

Energy storage systems such as batteries help to

A. balance supply when generation is low B. waste energy C. increase demand D. reduce efficiency always

Question 50 of 50

Simulation software allows engineers to

A. test designs virtually before building B. avoid design C. only draw pictures D. print money

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.