Engine performance Exam 2 UPDATED
ACTUAL Questions and CORRECT
Answers
The primary (low-voltage) ignition system must be working correctly before any spark occurs from a coil.
Which component is NOT in the primary ignition circuit? - CORRECT ANSWER - Spark plug
wiring
A reluctor is a ________. - CORRECT ANSWER - Notched ring or pointed wheel
The ignition module has direct control over the firing of the coil(s) of an EI system. Which component(s)
triggers (controls) the module? - CORRECT ANSWER - Pick up coil
HEI and EIS are examples of ________. - CORRECT ANSWER - Distributor ignition systems
Coil polarity is determined by the ________. - CORRECT ANSWER - Direction of rotation of the
coil windings
Because of ________, an ignition coil cannot be fully charged (reach magnetic saturation) until after a
delay of about 10 ms. - CORRECT ANSWER - Inductive reactance
The pulse generator ________ - CORRECT ANSWER - Signals the computer that fires the spark
plug directly
Two technicians are discussing distributor ignition. Technician A says that the pickup coil or optical
sensor in the distributor is used to pulse the ignition module (igniter). Technician B says that some
distributor ignition systems have the ignition coil inside the distributor cap. Which technician is correct? -
CORRECT ANSWER - Both tech distributor ignition
A waste-spark-type ignition system ________. - CORRECT ANSWER - Fires one spark lug with
reverse polarity
Fires one spark plug with straight polarity
, Fires two spark plugs at the same time
An ion-sensing ignition system allows the ignition system itself to be able to ________. - CORRECT
ANSWER - Detect rich or lean air-fuel mixture
Detect spark knock
Detect misfire
Technician A says that a defective crankshaft position sensor can cause a no-spark condition. Technician
B says that a faulty ignition control module can cause a no-spark condition. Which technician is correct? -
CORRECT ANSWER - Both tech no-spark condtion
Most ignition systems work by switching the circuit grounding the ignition coil's primary windings. -
CORRECT ANSWER - True
Which term describes the principle used to create high voltage from low voltage? - CORRECT
ANSWER - Electromagnetic induction
Technician A says that the primary and secondary ignition systems are never connected. Technician B
says that the primary and secondary windings are connected in some ignition coils. Which technician is
correct? - CORRECT ANSWER - Tech B ignition coils
Technician A says that the primary coil has more windings. Technician B says that the secondary coil has
more windings. Which technician is correct? - CORRECT ANSWER - Tech B secondary had
more coils
Turning off the low voltage primary coil induces a high voltage in the secondary windings. - CORRECT
ANSWER - True
The primary coil windings are designed for higher current (2-6 Amperes). - CORRECT
ANSWER - TrUe
What is the name of the electronic component inside the ignition module that opens and closes the
primary ignition circuit? - CORRECT ANSWER - Tansistor
ACTUAL Questions and CORRECT
Answers
The primary (low-voltage) ignition system must be working correctly before any spark occurs from a coil.
Which component is NOT in the primary ignition circuit? - CORRECT ANSWER - Spark plug
wiring
A reluctor is a ________. - CORRECT ANSWER - Notched ring or pointed wheel
The ignition module has direct control over the firing of the coil(s) of an EI system. Which component(s)
triggers (controls) the module? - CORRECT ANSWER - Pick up coil
HEI and EIS are examples of ________. - CORRECT ANSWER - Distributor ignition systems
Coil polarity is determined by the ________. - CORRECT ANSWER - Direction of rotation of the
coil windings
Because of ________, an ignition coil cannot be fully charged (reach magnetic saturation) until after a
delay of about 10 ms. - CORRECT ANSWER - Inductive reactance
The pulse generator ________ - CORRECT ANSWER - Signals the computer that fires the spark
plug directly
Two technicians are discussing distributor ignition. Technician A says that the pickup coil or optical
sensor in the distributor is used to pulse the ignition module (igniter). Technician B says that some
distributor ignition systems have the ignition coil inside the distributor cap. Which technician is correct? -
CORRECT ANSWER - Both tech distributor ignition
A waste-spark-type ignition system ________. - CORRECT ANSWER - Fires one spark lug with
reverse polarity
Fires one spark plug with straight polarity
, Fires two spark plugs at the same time
An ion-sensing ignition system allows the ignition system itself to be able to ________. - CORRECT
ANSWER - Detect rich or lean air-fuel mixture
Detect spark knock
Detect misfire
Technician A says that a defective crankshaft position sensor can cause a no-spark condition. Technician
B says that a faulty ignition control module can cause a no-spark condition. Which technician is correct? -
CORRECT ANSWER - Both tech no-spark condtion
Most ignition systems work by switching the circuit grounding the ignition coil's primary windings. -
CORRECT ANSWER - True
Which term describes the principle used to create high voltage from low voltage? - CORRECT
ANSWER - Electromagnetic induction
Technician A says that the primary and secondary ignition systems are never connected. Technician B
says that the primary and secondary windings are connected in some ignition coils. Which technician is
correct? - CORRECT ANSWER - Tech B ignition coils
Technician A says that the primary coil has more windings. Technician B says that the secondary coil has
more windings. Which technician is correct? - CORRECT ANSWER - Tech B secondary had
more coils
Turning off the low voltage primary coil induces a high voltage in the secondary windings. - CORRECT
ANSWER - True
The primary coil windings are designed for higher current (2-6 Amperes). - CORRECT
ANSWER - TrUe
What is the name of the electronic component inside the ignition module that opens and closes the
primary ignition circuit? - CORRECT ANSWER - Tansistor
