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Exam 6: Starting Systems and Motor Designsstarting System Diagnosis and Service

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Question 1

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Define the current draw test.

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It measures the amount of curr...

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Question 2

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The integrated starter generator (ISG) is a three-phase ____ motor.

A) AC
B) DC
C) HV
D) LV

E) B) and D)
F) A) and B)

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A

Question 3

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Which of the following statements is true of solenoids?

If there is a leak that allows antifreeze from the cooling system to enter the cylinder, the cylinder can fill to such a level that the piston is unable to move upward. This condition is referred to as____.

The two windings in the solenoid are the pull-in and the hold-in.

Common types of AC motors are the ____ motor and the induction motor.

The ring gear teeth of a flywheel are badly worn in various spots. Technician A says this could cause poor drive gear engagement. Technician B says this could cause a lower-than-normal starter current draw. Who is correct?

Slower-than-normal speed and higher-than-normal cranking amperage is usually the result of internal starter problems.

In any DC motor, there are three methods of connecting the field coils to the ____: series, parallel (shunt) , and a compound connection that uses both series and shunt coils.

The most common type of starter drive is the ____.

A tighter-than-normal engine will decrease the amperage draw of the system.

Describe how performing a "relative compression test" using a lab scope and the starting circuit can determine internal engine condition.

List the possible causes of excessive resistance to rotation.

Technician A says the two windings of the solenoid are called the pull-in and the hold-in windings. Technician B says both windings of the solenoid are continually energized any time the ignition switch is in the start position and the starter motor is spinning. Who is correct?

A vehicle is being checked for a no-crank condition. A voltmeter placed across the contacts of the starter solenoid indicates 12 volts when the ignition is turned to the "start" position. A distinct "click" noise is heard coming from the solenoid at the same time. Technician A says the starter motor may have an open armature or field current. Technician B says the starter solenoid needs to be replaced. Who is correct?

The commutator should be cleaned with ____.

Describe how the rotor turns in a three phase AC motor.

Vehicles equipped with manual transmissions have a clutch safety switch.

A starter should draw less current once it is spinning.

What part of the starter motor engages the armature to the engine flywheel (flexplate) ring gear?