1 mark true 6 the ignition systems secondary circuit

( 1 mark ) TRUE
6. The ignition system’s secondary circuit deals with high voltage electricity. ( 1 mark ) 7. In a series hybrid configuration, only the electric motor drives the wheels. ( 1 mark ) 8. An engine converts motion into energy. ( 1 mark
9. The piston is at top dead center (TDC) during the intake stroke. ( 1 mark
10. The rocker arms are valve train components. ( 1 mark

M o d u l e 4 : P e r f o r m a n c e a n d E m i s s i o n s
57
Matching
Match each term with its definition.
(This section is out of 7 marks. On the actual examination, it will be worth 15 marks.)
A. Engine Block B. The engine’s main power shaft
B. Crankshaft
G. Emission system component that releases the
vehicle’s exhaust gases
C. Oil Pump F. Breaks down harmful emissions
D. Cooling Fins
E. Allows electricity to reach the starter motor by
connecting the electrical contacts
E. Starter Solenoid A. The engine’s outer casing
F. Catalytic
Converter
D. Removes heat from an air-cooled engine
G. Tailpipe
C. Moves oil through the galleries and channels
of the engine

G r a d e 9 P o w e r M e c h a n i c s Te c h n o l o g y
58
Fill in the Blanks
Complete each sentence using the terms listed in the word bank.
(This section is out of 10 marks. On the actual examination, it will be worth 15 marks.)
Word Bank
Compression Negative
Exhaust Positive
Full Pressurized Power
Ground Resistance
Heat Splash
1. To jump-start a dead car battery, first connect the positive terminals of the dead car
and the working car. After that, connect the negative terminal with the dead car’s
ground .
2. In a splash system, oil circulates using the engine’s moving parts. In the full
pressurized system, a pump forces oil to move throughout the engine.
3. Friction is a force that creates resistance to movement. It generates heat between two
moving surfaces.
4. After a 4-stroke engine finishes its intake stroke, it proceeds to the compression
stroke, followed, in order, by the power and exhaust strokes.

M o d u l e 4 : P e r f o r m a n c e a n d E m i s s i o n s
59
Diagrams
Label the blanks on each picture using the provided word bank.