cameroon gce intermediate level 2026 mechanical technology 1

Internal Combustion Engines & Cooling Systems Practice Questions

Test your knowledge on engine components, forced induction, valve layouts, and automotive cooling systems with these 10 multiple-choice questions.

📷 Note: You can view the original page layout and diagrams in image_5f9ba1.jpg.

Question 1

The main function of the combustion chamber is to:

• A. provide space for the ignition and burning of fuel and air.

• B. mix air and fuel.

• C. compress fuel and air.

• D. expel gases.

Question 2

The primary function of a turbocharger in an engine is to:

• A. reduce exhaust emissions.

• B. cool the engine.

• C. increase air intake pressure for improved combustion.

• D. reduce fuel consumption.

Question 3

What is the meaning of OHC as far as valve layout is concerned?

• A. Overheated camshaft

• B. Onhead cams

• C. Overhead camshaft

• D. Oiled head cam followers

Question 4

Select one cause of black smoke at the vehicle’s exhaust:

• A. Excess Water

• B. Excess Oil

• C. Excess air

• D. Excess fuel

Question 5

The component responsible for opening the engine’s intake and exhaust valves is the:

• A. Camshaft

• B. Push rod

• C. Crankshaft

• D. Timing belt

Question 6

Timing of valve trains controls the rotations of the:

• A. flywheel pulley to camshaft

• B. crankshaft pulley to camshaft

• C. crankshaft bearings to camshaft

• D. sprocket to the camshaft

Question 7

Choose a name for the part labelled (A) in Figure 1:

(Refer to Figure 1 in image_5f9ba1.jpg – showing a crossflow radiator layout with an arrow pointing to the side tank/header unit)

• A. Radiator

• B. Radiator head

• C. Fluid cooler

• D. Radiator pipes

Question 8

Which of the following is a common consequence of using the wrong coolant mixture?

• A. Decreased engine efficiency

• B. Increased fuel consumption

• C. Increased risk of engine damage from overheating or freezing

• D. Reduced exhaust emissions

Question 9

Which component is responsible for circulating coolant in the engine?

• A. Radiator water pump

• B. Fan water hose.

• C. Water pump

• D. Thermostat

Question 10

An additive in oil to prevent corrosion is called a/an:

• A. Dispersant

• B. Detergent

• C. Corrosion inhibitor

• D. Anti-wear.