Applied Technology Mock 2026

WASSCE style · Study mode

Applied Technology Mock 2026

Question 1 of 50

What is the first thing to do before repairing an electrical appliance?

A. isolate it from the power supply B. test it with wet hands C. remove the fuse while it is on D. turn up the voltage

Question 2 of 50

Which item protects the eyes from the bright light of arc welding?

A. welding helmet with a filter lens B. dust mask C. ear muffs D. safety boots

Question 3 of 50

The purpose of a fuse in a circuit is

A. to break the circuit when the current is too high B. to store charge C. to raise the voltage D. to reduce resistance

Question 4 of 50

In a petrol engine, the fuel–air mixture is ignited by the

A. injector B. spark plug C. piston D. crankshaft

Question 5 of 50

The machine tool used to turn cylindrical work is the

A. shaping machine B. drilling machine C. lathe D. grinder

Question 6 of 50

Which of the following is a ferrous metal?

A. copper B. aluminium C. mild steel D. brass

Question 7 of 50

Steel is mainly an alloy of iron and

A. carbon B. copper C. zinc D. aluminium

Question 8 of 50

Which fire extinguisher is suitable for a fire in electrical equipment?

A. water B. foam C. sand mixed with water D. carbon dioxide (CO₂)

Question 9 of 50

In modern single-phase wiring in Ghana, the earth wire is coloured

A. brown B. blue C. green and yellow D. red

Question 10 of 50

A 12 V supply drives current through a 4 Ω resistor. What is the current?

A. 48 A B. 0.33 A C. 16 A D. 3 A

Question 11 of 50

An appliance draws 2 A from a 240 V supply. What is its power?

A. 120 W B. 480 W C. 242 W D. 238 W

Question 12 of 50

Resistors of 3 Ω, 5 Ω and 2 Ω are connected in series. What is the total resistance?

A. 10 Ω B. 0.97 Ω C. 30 Ω D. 5 Ω

Question 13 of 50

A diode allows current to flow

A. in one direction only B. equally in both directions C. only when it is cold D. only in AC circuits

Question 14 of 50

A 2 kW heater is used for 3 hours. How much energy does it use?

A. 1.5 kWh B. 5 kWh C. 6 kWh D. 0.67 kWh

Question 15 of 50

A 12 V car battery is usually made of how many 2 V cells in series?

A. 2 B. 4 C. 6 D. 12

Question 16 of 50

In what order do the strokes of a four-stroke engine happen?

A. intake, compression, power, exhaust B. compression, intake, exhaust, power C. power, intake, compression, exhaust D. intake, power, compression, exhaust

Question 17 of 50

Two 6 Ω resistors are connected in parallel. What is the combined resistance?

A. 12 Ω B. 6 Ω C. 3 Ω D. 36 Ω

Question 18 of 50

A transformer has 1,000 turns on the primary and 50 on the secondary. With 240 V input, what is the output voltage?

A. 4,800 V B. 12 V C. 24 V D. 120 V

Question 19 of 50

A diesel engine ignites its fuel by

A. a spark plug B. a flame from the exhaust C. heat from compressing the air D. a magnet

Question 20 of 50

A driver gear with 20 teeth turns a driven gear with 60 teeth. What is the gear ratio?

A. 1 : 3 B. 3 : 1 C. 2 : 6 D. 20 : 1

Question 21 of 50

In first-angle projection, the plan is drawn

A. above the front elevation B. to the left of the end view C. below the front elevation D. on top of the end view

Question 22 of 50

In a sand mould, the riser

A. cools the metal B. holds the pattern C. is where the sand is mixed D. supplies extra molten metal as the casting cools and shrinks

Question 23 of 50

Forging improves the strength of metal parts because it

A. adds carbon B. refines and aligns the grain structure C. makes them hollow D. melts them

Question 24 of 50

A residual current device (RCD) protects people by

A. raising the voltage B. cutting the supply when current leaks to earth C. storing charge D. cooling the cables

Question 25 of 50

A resistor has the colour bands red, red and brown. What is its value?

A. 122 Ω B. 22 Ω C. 2.2 kΩ D. 220 Ω

Question 26 of 50

In a DC motor, the commutator

A. reverses the current in the coil every half turn B. stores charge C. cools the motor D. measures speed

Question 27 of 50

An alternator in a vehicle produces

A. alternating current, which is rectified to charge the battery B. only direct current C. mechanical energy D. heat for the cabin

Question 28 of 50

Losses in a transformer caused by the resistance of its windings are

A. copper losses B. iron losses C. eddy current losses D. hysteresis losses

Question 29 of 50

Blockboard has a core of

A. fibres B. wood chips C. wooden strips sandwiched between veneers D. foam

Question 30 of 50

Sand moulds are made using a box called a

A. ladle B. crucible C. flask (moulding box) D. kiln

Question 31 of 50

Blinding concrete is a

A. thin layer of weak concrete at the bottom of a foundation trench B. roof screed C. wall plaster D. paving slab

Question 32 of 50

Terrazzo is a

A. floor finish of marble chips set in cement B. roof sheet C. wall paint D. window type

Question 33 of 50

Case hardening produces

A. a melted surface B. a soft surface C. a brittle core D. a hard surface with a tough core

Question 34 of 50

Molten metal enters a sand mould through the

A. vent only B. runner and sprue C. pattern D. core box

Question 35 of 50

A 555 timer IC is used to

A. produce timing pulses and delays B. store data C. amplify sound only D. rectify AC

Question 36 of 50

Two 100 μF capacitors in series give

A. 200 μF B. 50 μF C. 100 μF D. 10 μF

Question 37 of 50

Gear ratio of a gearbox with input 30 teeth driving output 90 teeth is

A. 1 : 3 increase B. 3 : 1 reduction C. 1 : 1 D. 9 : 3 increase

Question 38 of 50

Brass is easily machined because it

A. is brittle like glass B. is very hard C. is magnetic D. is relatively soft and forms short chips

Question 39 of 50

Brake fade occurs when

A. brakes are new B. brakes overheat and lose effectiveness C. tyres are inflated D. the clutch slips

Question 40 of 50

A resistor coded brown–black–orange–gold has a value of

A. 10 Ω ± 5% B. 1 kΩ ± 5% C. 100 kΩ ± 10% D. 10 kΩ ± 5%

Question 41 of 50

An engine with a bore of 80 mm and stroke of 100 mm has a swept volume per cylinder of about

A. 250 cm³ B. 800 cm³ C. 503 cm³ D. 1,005 cm³

Question 42 of 50

A compression ratio of 10 : 1 means

A. fuel is ten times air B. ten cylinders C. ten strokes D. total volume is ten times the clearance volume

Question 43 of 50

The tapping drill size for an M10 × 1.5 thread is about

A. 11.5 mm B. 10 mm C. 8.5 mm D. 6 mm

Question 44 of 50

Timber shrinks most

A. longitudinally B. tangentially (along the growth rings) C. radially D. not at all

Question 45 of 50

Quarter-sawn timber is preferred for flooring because it

A. is lighter B. is cheaper C. is more stable and wears evenly D. has more knots

Question 46 of 50

Normalising steel involves heating it and

A. cooling it in still air B. quenching in water C. cooling in the furnace D. cooling in oil

Question 47 of 50

A 3 kW water heater on 230 V needs a cable rated for at least

A. 13 A B. 5 A C. 30 A D. 1 A

Question 48 of 50

A residual current device typically trips at an earth leakage of

A. 30 mA B. 30 A C. 3 A D. 300 A

Question 49 of 50

Overall gear ratio with gearbox 3 : 1 and differential 4 : 1 is

A. 1 : 12 B. 7 : 1 C. 0.75 : 1 D. 12 : 1

Question 50 of 50

Ackermann steering geometry ensures that

A. wheels do not turn B. both wheels turn equally C. rear wheels steer D. the inner wheel turns at a greater angle than the outer

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