AUTOMOTIVE ELECTRONICS PRACTICE TEST QUESTIONS AND CORRECT VERIFIED ANSWERS

AUTOMOTIVE ELECTRONICS PRACTICE
TEST QUESTIONS AND CORRECT
VERIFIED ANSWERS
AA2seriesA2circuitA2hasA2threeA2resistorsA2ofA24A2ohmsA2each.A2TheA2voltageA2dropA2acros
sA2eachA2resistorA2isA24A2volts.A2TechnicianA2AA2saysA2thatA2theA2sourceA2voltageA2isA212A2
volts.A2TechnicianA2BA2saysA2thatA2theA2totalA2resistanceA2isA218A2ohms.A2WhichA2technici
anA2isA2correct?
TechA2A
TechA2B
Both
NeitherA2-A2Ans--TechA2A

AA2vehicleA2hasA2fourA2parkingA2lightsA2allA2connectedA2inA2parallelA2andA2oneA2ofA2theA2b
ulbsA2burnsA2out.A2TechnicianA2AA2saysA2thatA2thisA2couldA2causeA2theA2parkingA2lightA2fus
eA2toA2blowA2(open).A2TechnicianA2BA2saysA2thatA2itA2wouldA2decreaseA2theA2currentA2inA2t
heA2circuit.A2WhichA2technicianA2isA2correct?
TechA2A
TechA2B
Both
NeitherA2-A2Ans--TechA2B

AsA2additionalA2branchesA2areA2addedA2toA2aA2aA2parallelA2circuit,A2totalA2circuitA2resistanc
eA2________.
RemainsA2theA2same
Decreases
Increases
NoneA2ofA2theA2aboveA2-A2Ans--Decreases

CalculateA2theA2totalA2resistanceA2andA2currentA2inA2aA212-
voltA2parallelA2circuitA2withA2threeA2resistorsA2ofA24A2ohms,A28A2ohms,A2andA216A2ohms,A2u
singA2anyA2oneA2ofA2theA2fiveA2methodsA2(calculatorA2suggested).A2WhatA2areA2theA2totalA2
resistanceA2andA2current?
140A2ohmsA2(18A2amps)
4A2ohmsA2(3.0A2amps)
2.3A2ohmsA2(5.3A2amps)
22A2ohmsA2(0.4A2amps)A2-A2Ans--2.3A2ohms

IfA2oneA2branchA2ofA2aA2parallelA2circuitA2losesA2continuity,A2theA2otherA2branchesA2willA2sti
llA2eachA2receiveA2sourceA2voltageA2andA2ground.
True
FalseA2-A2Ans--True

,IfA2theA2resistanceA2andA2theA2voltageA2areA2known,A2whatA2isA2theA2formulaA2forA2findingA
2theA2currentA2(amperes)?
IA2=A2EA2xA2R
EA2=A2IA2xA2R
RA2=A2EA2xA2I
IA2=A2EA2/A2RA2-A2Ans--IA2=A2EA2/A2R

InA2aA2seriesA2circuit,A2totalA2circuitA2resistanceA2isA2equalA2toA2theA2________A2ofA2theA2re
sistanceA2ofA2allA2loadsA2inA2theA2circuit.
SumA2
Dividend
Difference
NoneA2ofA2theA2AboveA2-A2Ans--Sum

Kirchhoff'sA2lawA2statesA2thatA2theA2voltageA2aroundA2aA2closedA2circuitA2isA2equalA2toA2the
A2sumA2ofA2theA2________A2acrossA2allA2theA2loads.
VoltageA2drops
Resistances
BothA2AA2&A2B
NeitherA2AA2norA2BA2-A2Ans--VoltageA2drops

MoreA2electricalA2currentA2willA2tendA2toA2flowA2throughA2theA2branchA2ofA2aA2parallelA2circ
uitA2withA2________A2resistance.
Infinite
Lowest
Highest
NoneA2ofA2theA2AboveA2-A2Ans--Lowest

TechnicianA2AA2saysA2thatA2electronicA2calculatorsA2haveA2aA2memoryA2functionA2thatA2ca
nA2beA2usedA2toA2calculateA2resistance,A2current,A2andA2voltageA2valuesA2forA2aA2parallelA2
circuit.A2TechnicianA2BA2saysA2thatA2componentsA2ofA2aA2series-
parallelA2circuitA2areA2separatedA2toA2simplifyA2calculations.A2WhichA2technicianA2isA2corre
ct?
TechA2A
TechA2B
Both
NeitherA2-A2Ans--Both

TheA2amperageA2inA2aA2seriesA2circuitA2________.
IsA2alwaysA2lessA2returningA2thanA2leavingA2theA2battery.
IsA2theA2sameA2anywhereA2inA2theA2circuit.
IsA2highA2atA2theA2beginningA2ofA2theA2circuitA2andA2decreasesA2asA2theA2currentA2flowsA2t
hroughA2theA2resistance.
VariesA2inA2theA2circuitA2dueA2toA2theA2differentA2resistances.A2-A2Ans--
IsA2theA2sameA2anywhereA2inA2theA2circuit.

, TheA2higherA2theA2resistanceA2ofA2aA2loadA2inA2aA2seriesA2circuit,A2theA2__________A2theA2
voltageA2dropsA2acrossA2thatA2load.
Less
Equal
More
NoneA2ofA2theA2aboveA2-A2Ans--More

TheA2sumA2ofA2theA2voltageA2dropsA2inA2aA2seriesA2circuitA2equalsA2theA2________.
Resistance
SourceA2voltage
Wattage
AmperageA2-A2Ans--SourceA2voltage

TheA2voltageA2forA2eachA2branchA2ofA2aA2parallelA2circuitA2isA2________.
ReducedA2byA2theA2resistanceA2ofA2loadsA2inA2eachA2branch
Equal
IncreasedA2byA2theA2resistanceA2ofA2loadsA2inA2eachA2branch
NoneA2ofA2theA2aboveA2-A2Ans--Equal

TwoA2lightA2bulbsA2areA2wiredA2inA2seriesA2andA2oneA2bulbA2burnsA2outA2(opens.)A2Technic
ianA2AA2saysA2thatA2theA2otherA2bulbA2willA2work.A2TechnicianA2BA2saysA2thatA2theA2current
A2willA2increaseA2inA2theA2circuitA2becauseA2oneA2electricalA2loadA2(resistance)A2isA2noA2lon
gerA2operating.A2WhichA2technicianA2isA2correct?A2
TechnicianA2AA2
TechnicianA2BA2
BothA2TechniciansA2AA2andA2BA2
NeitherA2TechnicianA2AA2norA2BA2-A2Ans--Neither

AA2seriesA2circuitA2hasA2threeA2resistorsA2ofA26A2ohmsA2each.A2TheA2voltageA2dropA2acros
sA2eachA2resistorA2isA24A2volts.A2TechnicianA2AA2saysA2thatA2theA2sourceA2voltageA2isA212A2
volts.A2TechnicianA2BA2saysA2thatA2theA2totalA2resistanceA2isA218A2ohms.A2WhichA2technici
anA2isA2correct?
TechnicianA2AA2only
TechnicianA2BA2only
BothA2TechniciansA2AA2andA2B
NeitherA2TechnicianA2AA2norA2BA2-A2Ans--BothA2TechniciansA2AA2andA2B

IfA2aA212A2voltA2batteryA2isA2connectedA2toA2aA2seriesA2circuitA2withA2threeA2resistorsA2ofA22
A2ohms,A24A2ohms,A2andA26A2ohms,A2howA2muchA2currentA2willA2flowA2throughA2theA2circuit
?
1A2ampere
2A2amperes
3A2amperes
4A2amperesA2-A2Ans--1A2ampere