cameroon gce intermediate level 2025 electrical and electronic technology 1

 

1. The density or the state of charge of a lead acid battery can be checked with the help of a:

• A) cell tester
• B) thermometer
• C) hydrometer
• D) hygrometer

2. One of the following components “turns on” the ignition system.

• A) The battery
• B) The Alternator
• C) The ignition switch
• D) The coil

3. One of the following is the name of the computer which controls the ignition.

• A) Ignition Control Module
• B) Management Control Module
• C) Power Control Module
• D) Transmission Control Module

4. The direction of magnetic lines of force is from:

• A) North pole to south pole
• B) South pole to North pole
• C) End of the magnet to another
• D) The centre of the magnet to North pole

5. If the battery has zero internal resistance and the external resistance R is gradually reduced in the circuit shown in Figure 1, the voltmeter reading will:

• A) remain constant
• B) increase
• C) decrease
• D) Turn to infinity

6. The check or test represented in figure 2 is called:

• A) continuity test between rotor windings and the slip rings
• B) ground test between slip rings and rotor ground
• C) continuity test between commutators and rotor ground
• D) ground test between stator assembly and the slip rings

7. In a lead acid battery, sulphation occurs as a result of:

• A) fast charging
• B) heavy charging
• C) incomplete charging
• D) trickle charging

8. A device that converts chemical energy into electrical energy through chemical action is called a/an:

• A) Generator
• B) Electric cell
• C) Alternator
• D) Electrolyte

9. One of the following is a possible cause of a noisy Alternator:

• A) Blown fuse wire
• B) Broken drive belt
• C) Loose mounting
• D) Voltage regulator winding open

10. As the battery is discharged, the active materials in both negative and positive plates of a lead acid battery are changed to:

• A) Spongy lead
• B) Sulphuric acid
• C) Lead oxide
• D) Lead sulphate