205a 205b true or false

Question 1

Alternator belts shout be adjusted using a belt tension guage

Answer 1

T

Question 2

Loose alternator brackets could cause a belt alignment problem which could offset the pulleys by more then 1mm in 20cm span

Answer 2

T *exam confirmed

Question 3

a corroded battery cable could cause a v drop that would result in the battery being undercharged

Answer 3

t

Question 4

wgeb testing for rated output of an alternator, it is best to use a carbon pile to load the system down

Answer 4

t

Question 5

a new belt should be tensioned to at least 100 lbs

Answer 5

f manufacturers specifications

Question 6

An alternator can only be rotated 1 way, if rotated backwards it will discharge the battery

Answer 6

F bi-directional

Question 7

a swollen battery case could be result of over charging or a battery that was frozen

Answer 7

t

Question 8

on a multiple battery setup one battery in poor condition could cause the other batteries to fail

Answer 8

t

Question 9

a shorted rectifier diode will result in up to 70% loss in alternator output which could also drain the battery when the key is off

Answer 9

t

Question 10

a diode being tested with a dmm reads 0.5v this would indicate that it is in forward bias

Answer 10

t

0v is reverse bias

Question 11

Continuous headlight bulb failure could be an indicator of a faulty voltage regulator

Answer 11

t

Question 12

by full fielding an alternator you could destroy the ecms

Answer 12

t - you are bypassing the voltage regulator

Question 13

radio noise is due to interferance from the alternator fixable with a capacitor or could be due to an internal alternator problem

Answer 13

t

Question 14

alternator maximum current output is limited by inductive reactance

Answer 14

t (think cemf)

Question 15

Digital wave forms are in the form of a wave on a graph

Answer 15

f

Question 16

the generator principal states when you cut magnetic lines of force with a conductor, you will induce a voltage into the conductor

Answer 16

t

Question 17

alternators must supply enough current to operate all electrical loads

Answer 17

t

Question 18

voltage regulators could be located in the ECM

Answer 18

t (voltage regulators control field circuit and the alternator)

Question 19

the greatest induced voltage is when the magnetic field is at right angles to the stator winding

Answer 19

t

Question 20

one cycle is called single phase DC voltage

Answer 20

f (AC voltage)

Question 21

The voltage regulator switches the field circuit which will vary the magnetic field in the pole pieces

Answer 21

t

Question 22

Delta and Y wound alternators both produce a 3 phase DC current

Answer 22

F (AC current always produced)

Question 23

Forward bias diodes do not allow any current flow

Answer 23

f (allow 0.5v) reverse bias would be true

Question 24

a capicitor is installed in parallel with the bat terminal on the alternator

Answer 24

t

Question 25

Y wound stators are considered to be series wound, wheras Delta wound stators are parallel wound

Answer 25

t

Question 26

the diode trio rectifies the voltage from the stator then supplies it to the rotor windings

Answer 26

t

Question 27

the R or the STA (same) terminal on the alternator supplies DC voltage

Answer 27

t (its rectified at this point)

Question 28

the zener diode located in the voltage regulator controls minimum alternator output by turning the TR2 diode off

Answer 28

F (keyword minimum should be maximum) the rest is bullshit

Question 29

some voltage regulator max voltage settings are adjustable

Answer 29

t
thermistor (variable)
potentiometer (manual adjustment)
Cold climate adjustments…