UTI AT-12 104 ELECTRICAL FUNDAMENTALS FINAL EXAM | STUDY GUIDE, PRACTICE TEST
QUESTIONS AND ANSWERS
What are the Charging system principles? - correct answer ✔✔- The principle of magnetism
- convert mechanical energy to electrical energy
- energy i required to operate the loads in the electrical system.
What are the functions of the charging system in the vehicle? - correct answer ✔✔- generates
electricity to run electrical systems
- recharges battery
- replaces the battery once the vehicle is running
Does the charger produce more voltage than the battery produces? - correct answer ✔✔Yes,
the charging system generates 1-2 votls higher than the batttery is able to.
When the car is off, what powers other accessory systems in the vehicle? - correct answer
✔✔The battery
When the engine is running and the electrical demand exceeds the amount of energy the
charging system provides, what happens? - correct answer ✔✔The battery will act as a
reservoir and deliver high current.
Precise control of the charing system places less what? - correct answer ✔✔Mechanical load on
the engine. This results in higher fuel effeciency
What are the three types of electric generators? - correct answer ✔✔- DC Generator
- Alternator
- Magneto
,What are the characteristics of the DC Generator? - correct answer ✔✔- used until the 1960's
- very simple, very little makeup/ parts
- does not work well at low speed
- uses two stationary elctromagnets to induce current
What are the characteristics of the Alternator Generator? - correct answer ✔✔- Engine turns
alternator's rotor
- Smaller and lighter than DC generators
- spins electromagnet to generate current
- generates AC that must change into DC before it can power the system
What are the characteristics of the Magneto Generator? - correct answer ✔✔- Generates
alternating current
- small and mounted to engine
- not requre electricity to operate
- uses rotating premanent magnets to induce energy
- typically found on motorcycles, ATV's and small watercraft
What is the purpose of the voltage regulator? - correct answer ✔✔To maintain the appropriate
charge to recharge the battery and provide for the vehicles' electrical needs.
What are the characteristics of the Electromechanical Voltage Regulator? - correct answer ✔✔-
uses magnetically operated switches
- found in older vehicles
- switches loes adjustment and wear out
- require mounting on a VERTICAL surface
, What are the characteristics of the Electronic Voltage Regulator? - correct answer ✔✔- found in
modern vehicles
- has no moving parts
- does not lose adjustment or wear out
- mounts in any position on or inside the generator
What are the characteristics of the Computer-controlled voltage regulator? - correct answer
✔✔- has benefits of electronic voltage regulators
- uses PCM's diagnostic capabilites
- asssists in troubleshooting charging system concerns
- charges battery as necessary
- prolongs battery life
- reduces engine power that is consumed
What type of machines and vehicles may need one or more alternators? - correct answer ✔✔-
Construction Machines (cranes, bulldozers, forklifts)
Do Farm Equipment have high electrical demands? - correct answer ✔✔No, they do not. They
use a single alternator.
What do small engines use for the charging system? - correct answer ✔✔- A small magneto
generator
What is Flux? - correct answer ✔✔an invisible force generated by a magnetic field
Where does Flux exit from in a magnet? - correct answer ✔✔It exits from the north pole and
enters the south pole
QUESTIONS AND ANSWERS
What are the Charging system principles? - correct answer ✔✔- The principle of magnetism
- convert mechanical energy to electrical energy
- energy i required to operate the loads in the electrical system.
What are the functions of the charging system in the vehicle? - correct answer ✔✔- generates
electricity to run electrical systems
- recharges battery
- replaces the battery once the vehicle is running
Does the charger produce more voltage than the battery produces? - correct answer ✔✔Yes,
the charging system generates 1-2 votls higher than the batttery is able to.
When the car is off, what powers other accessory systems in the vehicle? - correct answer
✔✔The battery
When the engine is running and the electrical demand exceeds the amount of energy the
charging system provides, what happens? - correct answer ✔✔The battery will act as a
reservoir and deliver high current.
Precise control of the charing system places less what? - correct answer ✔✔Mechanical load on
the engine. This results in higher fuel effeciency
What are the three types of electric generators? - correct answer ✔✔- DC Generator
- Alternator
- Magneto
,What are the characteristics of the DC Generator? - correct answer ✔✔- used until the 1960's
- very simple, very little makeup/ parts
- does not work well at low speed
- uses two stationary elctromagnets to induce current
What are the characteristics of the Alternator Generator? - correct answer ✔✔- Engine turns
alternator's rotor
- Smaller and lighter than DC generators
- spins electromagnet to generate current
- generates AC that must change into DC before it can power the system
What are the characteristics of the Magneto Generator? - correct answer ✔✔- Generates
alternating current
- small and mounted to engine
- not requre electricity to operate
- uses rotating premanent magnets to induce energy
- typically found on motorcycles, ATV's and small watercraft
What is the purpose of the voltage regulator? - correct answer ✔✔To maintain the appropriate
charge to recharge the battery and provide for the vehicles' electrical needs.
What are the characteristics of the Electromechanical Voltage Regulator? - correct answer ✔✔-
uses magnetically operated switches
- found in older vehicles
- switches loes adjustment and wear out
- require mounting on a VERTICAL surface
, What are the characteristics of the Electronic Voltage Regulator? - correct answer ✔✔- found in
modern vehicles
- has no moving parts
- does not lose adjustment or wear out
- mounts in any position on or inside the generator
What are the characteristics of the Computer-controlled voltage regulator? - correct answer
✔✔- has benefits of electronic voltage regulators
- uses PCM's diagnostic capabilites
- asssists in troubleshooting charging system concerns
- charges battery as necessary
- prolongs battery life
- reduces engine power that is consumed
What type of machines and vehicles may need one or more alternators? - correct answer ✔✔-
Construction Machines (cranes, bulldozers, forklifts)
Do Farm Equipment have high electrical demands? - correct answer ✔✔No, they do not. They
use a single alternator.
What do small engines use for the charging system? - correct answer ✔✔- A small magneto
generator
What is Flux? - correct answer ✔✔an invisible force generated by a magnetic field
Where does Flux exit from in a magnet? - correct answer ✔✔It exits from the north pole and
enters the south pole
