Ordinary level 2026 North west regional mock electrical and electronic technology 1

Here is the data extracted from the final image provided, which appears to be a multiple-choice section on automotive electrical systems and vehicle technology.

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1. The expression “potential difference” is often used to express

• A. current

• B. resistance

• C. voltage

• D. electrons

2. Which of the following parts is rotated by the self-starter when starting a diesel engine?

• A. Crankshaft

• B. Flywheel

• C. Camshaft

• D. Vibration damper

3. In a 12V system, one amp is roughly the current required to light a

• A. 1 watt bulb

• B. 6-watt bulb

• C. 12-watt bulb

• D. 24-watt bulb

4. The role of a thermistor used in an alternator regulator is to

• A. control maximum current

• B. control maximum voltage

• C. compensate for temperature change

• D. control minimum current

5. When a battery is “taken off charge”, the terminal voltage is

• A. 2.1 volts

• B. 1.8 volt

• C. less than 2.1 volts

• D. less than 1.8 volt

6. In figure below, part 1 is

(The figure shows a simple lead-acid cell with $PbO_2$, $Pb$, and $2H_2SO_4$)

• A. negative electrode

• B. positive electrode

• C. casing

• D. electrolyte

7. The heat range of a spark plug can be determined by

• A. the number of electrodes

• B. its diameter

• C. its length

• D. its part number

8. The figure below shows a transistorised ignition with a hall effect type of pulse generator. What is the name given to the numbered part 1?

(The diagram shows a hall effect sensor assembly)

• A. Vane

• B. Magnet

• C. Hall detector

• D. Electronic amplifier

9. All of the following are the three major parts of a spark plug EXCEPT

• A. Electrode gap, insulator, terminal

• B. Insulator, electrodes, terminal nuts

• C. Centre electrode, earth electrode, spark gap

• D. Corrugation, top insulator, electrode

10. The device that uses engine power to produce electricity is known as

• A. alternator drive belt

• B. charging system harness

• C. battery

• D. alternator

11. Two types of windscreen wiper dives are

• A. rack and pinion system

• B. link and rack system

• C. cam and peg system

• D. link and blade system

12. The apparatus used for adjusting ignition timing is

• A. accurate clock

• B. tachometer

• C. stop watch

• D. stroboscopic light

13. When a car battery is half charged, the specific gravity of acid in this battery is usually

• A. 0.74

• B. 1.00

• C. 1.12

• D. 1.19

14. Centre housing that holds coils and shoes on the starting system is called

• A. field frame

• B. pinion assembly

• C. armature

• D. brush and frame

15. Anti-lock braking systems

• A. decrease stopping distance in all conditions

• B. assist the driver to retain control during emergency stops

• C. are not used on heavy vehicles

• D. are a form of re-generative braking system

16. The magnetic field required for starting a motor operation is provided by the

• A. armature assembly

• B. field-winding assembly

• C. solenoid