Starting System Flashcards
(51 cards)
Placing one growler test prod on the commutator bar and the other to armature shaft would be?
Reading?
Short to ground
Reading OL
Overheating of the start from prolonged cranking is prevented by?
Internal switch
Magnetic switch reduces current flow through?
Key switch
A low amperage reading during cranking and a slow cranking speed could be caused by?
A) poor brush and commutator condition
B) armature rubbing on the pole shoes
A) poor brush and commutator condition
B) this would be the opposite of (A)
What condition does the starter draw the least amount of current?
Operating free speed.
When testing an armature on a growler a vibrating blade would indicate?
Shorted
Why does current amperage decrease as starter speed increases?
CEMF
Starter solenoid chatter when battery voltage is testing to be good is most likely caused by?
Hold in winding.
Shorted field winding during a no load test will result in the starting motor having excessive?
Current
When the key switch is released current to the solenoid_________ is shut off.
Hold in/pull in
A starter that does not rotate and has high current draw?
Mechanical problem
Never operate a starter motor for more than ________ and cool for ________
30 seconds/2 minutes
Voltage drop reading across a cranking system ground circuit of .8 volts while the engine is cranking indicates that?
High resistance.
What prevents the overspeeding of the armature when the engine starts?
Overrunning clutch
A field winding that prevents high free running speed in a starter motor is a?
Shunt winding.
What circuit does not have to be tested on permanent magnet style starter motor?
Field winding
Open circuits in the armature do to solder thrown out of the winding is a result of?
Overheating
If the pull in windings are energized for more than 8 seconds?
Burn out
Cranking motor safety switches are connected in __________ with magnetic switch?
Series
The cranking system converts electrical energy from the battery to.
Mechanical energy
A basic test for checking starter motor internal condition while off the vehicle is the?
No load test
The basic starting principle is that, when a current carrying conductor is placed in a magnetic field?
Due force through magnetic flux lines
Field coil winding has been shorted to the field frame. What would be the expected results?
No operation
Is there an advantage of the parallel wound field coils over the series wound coils?
Parallel wound field coils have more current flow/ less resistance.
Series wound field coils have more resistance less current flow.
