Automotive Exam UPDATED Exam
Questions and CORRECT Answers
Which basic element of electricity is also described as "electrical pressure?" - CORRECT
ANSWER - voltage
Technician A says that an electrical short circuit causes excess current flow. Technician B says a
short causes excuess resistance to develop. Who is right? - CORRECT ANSWER - A only
Technician A says that as voltage decreases and resistance remains constant, the number of free
electrons flowing through a circuit decreases. Technician B says that as voltage increases and
resistance remains constant, current increases. Who is right? - CORRECT ANSWER -
Both A and B
_____ is the prefix used to stand for a value of 1,000,000,000 - CORRECT ANSWER -
giga
In a ____ circuit, the vehicle's frame or body serves as an electrical conductor. - CORRECT
ANSWER - One-wire
Which of the following is the Ohm's Law formula for finding current? - CORRECT
ANSWER - I=E/R
If a circuit has a resitance of 2 ohms and a current of 4 amps, the voltage is _____ V -
CORRECT ANSWER -8
To protect an electrical circuit from damage by a "short" a device called a ___ is installed -
CORRECT ANSWER - Fuse
The drawing below shows a device called a _____. - CORRECT ANSWER - Step-down
transformer
, Technician A says that a replacement fuse must have the same amp raing as the original.
Technician B says a 20-amp automotive fuse will handle 25 amps of current without blowing.
Who is right? - CORRECT ANSWER - A only
The drawing below is the symbol for an electronic device called a ___ - CORRECT
ANSWER - PNP transistor
Technician A says a transistor is a device used to rectify current in a circuit. Technician B syas a
transistor is a device used to amplify current in a circuit. Who is right? - CORRECT
ANSWER - B only
A picofarad is equal to ___ of a farad - CORRECT ANSWER - One trillionth
The resistance of a circuit is measured in ____. - CORRECT ANSWER - Ohms
Technician A says a load tester can be used to check the condition of a vehicles's battery.
Technician B says a load tester can be used to check the condition of a vehicles's starting system.
Who is right? - CORRECT ANSWER - Both A and B
Which of the following tools is used when making electrical test on a diesel engine? -
CORRECT ANSWER - Luminosity timing meter
Technician A says an inductive wire tracer generates a dc voltage in the wiring being tested.
Technician B syas an iductive wire tracer checks for high current load in the circuit. Who is
right? - CORRECT ANSWER - Neither A nor B
to protect wiring before it gets to the fuse box, a(n) _____ is installed. - CORRECT
ANSWER - relay
Questions and CORRECT Answers
Which basic element of electricity is also described as "electrical pressure?" - CORRECT
ANSWER - voltage
Technician A says that an electrical short circuit causes excess current flow. Technician B says a
short causes excuess resistance to develop. Who is right? - CORRECT ANSWER - A only
Technician A says that as voltage decreases and resistance remains constant, the number of free
electrons flowing through a circuit decreases. Technician B says that as voltage increases and
resistance remains constant, current increases. Who is right? - CORRECT ANSWER -
Both A and B
_____ is the prefix used to stand for a value of 1,000,000,000 - CORRECT ANSWER -
giga
In a ____ circuit, the vehicle's frame or body serves as an electrical conductor. - CORRECT
ANSWER - One-wire
Which of the following is the Ohm's Law formula for finding current? - CORRECT
ANSWER - I=E/R
If a circuit has a resitance of 2 ohms and a current of 4 amps, the voltage is _____ V -
CORRECT ANSWER -8
To protect an electrical circuit from damage by a "short" a device called a ___ is installed -
CORRECT ANSWER - Fuse
The drawing below shows a device called a _____. - CORRECT ANSWER - Step-down
transformer
, Technician A says that a replacement fuse must have the same amp raing as the original.
Technician B says a 20-amp automotive fuse will handle 25 amps of current without blowing.
Who is right? - CORRECT ANSWER - A only
The drawing below is the symbol for an electronic device called a ___ - CORRECT
ANSWER - PNP transistor
Technician A says a transistor is a device used to rectify current in a circuit. Technician B syas a
transistor is a device used to amplify current in a circuit. Who is right? - CORRECT
ANSWER - B only
A picofarad is equal to ___ of a farad - CORRECT ANSWER - One trillionth
The resistance of a circuit is measured in ____. - CORRECT ANSWER - Ohms
Technician A says a load tester can be used to check the condition of a vehicles's battery.
Technician B says a load tester can be used to check the condition of a vehicles's starting system.
Who is right? - CORRECT ANSWER - Both A and B
Which of the following tools is used when making electrical test on a diesel engine? -
CORRECT ANSWER - Luminosity timing meter
Technician A says an inductive wire tracer generates a dc voltage in the wiring being tested.
Technician B syas an iductive wire tracer checks for high current load in the circuit. Who is
right? - CORRECT ANSWER - Neither A nor B
to protect wiring before it gets to the fuse box, a(n) _____ is installed. - CORRECT
ANSWER - relay
