October Pop Quiz: Ignition
Choose the answer that BEST completes the following statements or questions.
1) ____________ refers to the precise moment a spark plug fires in relation to the position of a piston in the cylinder. Less power will be produced the earlier the spark event occurs.
A) Ignition rpm
B) Ignition timing
C) Ignition sequence
D) Ignition spark
2) The __________ of a spark plug contributes to the resistance of the ignition secondary circuit and determines how much gasoline is ionized when the spark plug fires.
A) resistance area
B) laminate
C) magnetic force
D) air gap
3) Which of the following ignition system configurations are commonly found on OBD II compliant engines?
A) Hall Effect, Optical, breaker point, fast start
B) Direct ignition, electronic ignition, TIF
C) Distributorless Ignition Systems (DIS), coil near plug, Coil-Over-Plug (COP)
D) None of the above
4) Which of the following sensor types requires signal conditioning by the Powertrain Control Module?
Which type of engine position sensor requires its voltage signal to become amplified, inverted and then shaped into a clean, square wave signal?
A) Hall-effect sensor
B) Magnetic pulse generator
C) Photoelectric sensor
D) Both A and C
5) Some EI systems are called fast start systems because the spark plugs begin firing within _______ degrees of crankshaft rotation.
A) 60
B) 120
C) 180
D) 360
6) When using a digital voltmeter to check a two-wire crankshaft or camshaft sensor signal there are three aspects to measure, they include:
A) Amperage, amplitude, frequency
B) Duty cycle, frequency, resistance
C) A/C voltage, frequency, resistance
D) DC voltage, frequency, resistance
7) Spark duration is measured in:
A) milliseconds
B) milliamps
C) millivolts
D) milliohms
8) When diagnosing ignition problems, trace patterns of the ignition oscilloscope can be divided into three main zones or sections: the firing section, the intermediate section and the _________.
A) spark section
B) dwell section
C) raster pattern
D) timing pattern
9) Ignition systems on OBD II compliant vehicles has two main electrical circuits, the:
A) inductive and reluctive circuits
B) high energy and low energy circuits
C) input and output circuits
D) primary and secondary circuits
10) ______________ is produced when electromagnetic radio waves of sufficient amplitude escape from a spark plug wire or conductor?
A) Capacitive discharge
B) Resistor interference
C) Spark triggering
D) Electromagnetic interference
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Solution to the October Pop Quiz: Ignition
1) ____________ refers to the precise moment a spark plug fires in relation to the position of a piston in the cylinder. Less power will be produced the earlier the spark event occurs.
B) Ignition timing
2) The __________ of a spark plug contributes to the resistance of the ignition secondary circuit and determines how much gasoline is ionized when the spark plug fires.
D) air gap
3) Which of the following ignition system configurations are commonly found on OBD II compliant engines?
C) Distributorless Ignition Systems (DIS), coil near plug, Coil-Over-Plug (COP)
4) Which of the following sensor types requires signal conditioning by the Powertrain Control Module?
Which type of engine position sensor requires its voltage signal to become amplified, inverted and then shaped into a clean, square wave signal?
B) Magnetic pulse generator
5) Some EI systems are called fast start systems because the spark plugs begin firing within _______ degrees of crankshaft rotation.
B) 120
6) When using a digital voltmeter to check a two-wire crankshaft or camshaft sensor signal there are three aspects to measure, they include:
C) A/C voltage, frequency, resistance
7) Spark duration is measured in:
A) milliseconds
8) When diagnosing ignition problems, trace patterns of the ignition oscilloscope can be divided into three main zones or sections: the firing section, the intermediate section and the _________.
B) dwell section
9) Ignition systems on OBD II compliant vehicles has two main electrical circuits, the:
D) primary and secondary circuits
10) ______________ is produced when electromagnetic radio waves of sufficient amplitude escape from a spark plug wire or conductor?
D) Electromagnetic interference
