Auto mechanics Paper 2 WASSCE (PC 2ND), 2019

candidates' Strength

 

The candidates demonstrated a great deal of knowledge in their ability to answer questions asked on:
- how combustion takes place in compression-ignition engine;
- the functions of automobile steering ball joint;
- naming the parts of external relief valve;
- the effects of faultiness of automobile relief valve;
- functions of automobile clutch;
- remedy of excessive free-play of automobile clutch pedal;
- sketching of ball-and-plunger type of gearbox interlocking mechanism;
- functions of ball-and-plunger type of interlocking mechanism;
- naming the components that provide gear reduction in final the gear;
- naming the parts of strangler valve of a simple carburettor;
- the materials used to construct an air-cooled engine block;
- explanation of what “dwell angle” is;
- naming the tools used for adjusting contact breaker gap;
- identifying hot/soft and cold/hard plugs;
- advantages of cold plugs over hot plugs, as used in automobiles;
- how spark plug gap is checked;
- the purpose of automobile coil ignition system.