Charging system and control circuit fundamentals Flashcards

1
Q

what components carry current flow that is required to create a magnetic field in the rotor field coil

A

slips and brushes

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2
Q

heat must be directed away from the alternator using these 3 components

A

heat sinks
oil
cooling fans

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3
Q

why are pole and field windings made of soft iron

A

permeability

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4
Q

heat producing eddy currents are reduced by doing what

A

laminating iron plates

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5
Q

when only half an AC wave is utilized through rectification it is known as

A

half wave rectification

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6
Q

the purpose of a power cap between the output and ground is

A

protection from transient voltage spikes

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7
Q

the two types of stator windings are called

A

y type and delta

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8
Q

what is the purpose of y type winding

A

they are connected in series to produce higher voltage

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9
Q

how are delta type windings connected

A

connected in parallel

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10
Q

if the regulator controls the current flowbefore it passes through the rotor windings its called

A

A circuit

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11
Q

if the regulator controls the current flow after it passes through the rotor windings its called

A

B circuit

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12
Q

max output of an alternator is limited by

A

inductive reactance

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13
Q

what provides rectified current to energize the alternators field coil

A

diode trio

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14
Q

what two terminals will provide one half system voltage from the stator that has not been rectified

A

R and STA terminals

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15
Q

the electrical current required to create the magnetic field in the rotor is supplied to the field conductors through

A

brushes and slip rings

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16
Q

purpose of charging system is

A

charge battery and start unit

17
Q

charging system converts what energy

A

mechanical to electrical

18
Q

charging systems use

A

dc alternators
semiconductor tech for voltage reg
diodes

19
Q

alternators have these three characters

A
high voltage at low speeds
can be operated at high speed
low current flow through brushes
create current in either direction
light weight per amp of output
20
Q

fully charged 24 volt system voltage

A

25.2

21
Q

max charge voltage on a 12v system

A

14.8

22
Q

two major circuits

A

output and field circuits

23
Q

alternator induces current by rotating a _____inside a fixed conductor

A

magnetic field

24
Q

constant change in voltage as the magnetic field is rotated creates what voltage

A

sine wave voltage