Question 1

The Wheatstone bridge is:

Accepted Answer

A) A pressure sensing device that uses a variable capacitor. 
B) A pressure sensing device that uses varying resistances in a series-parallel circuit design. 
C) Used to measure motion by use of magnetic inductance. 
D) None of these choices. 
A) A pressure sensing device that uses a variable capacitor. 
B) A pressure sensing device that uses varying resistances in a series-parallel circuit design. 
C) Used to measure motion by use of magnetic inductance. 
D) None of these choices. B

Question 2

Which of the following would NOT be considered a computer input?

Accepted Answer

A) Throttle position sensor 
B) Magnetic pulse generator 
C) Park/Neutral switch 
D) EGR vent solenoid 
A) Throttle position sensor 
B) Magnetic pulse generator 
C) Park/Neutral switch 
D) EGR vent solenoid D

Question 3

Which of the following is an example of a piezoelectric sensor?

Accepted Answer

A) Fuel gauge sender unit 
B) Knock sensor 
C) Coolant temperature sender unit 
D) Hall-effect sensor 
A) Fuel gauge sender unit 
B) Knock sensor 
C) Coolant temperature sender unit 
D) Hall-effect sensor B

Question 4

When inspecting magnetoresistive sensors, all of the following must be checked EXCEPT:

Accepted Answer

A) Bias voltage 
B)  Proper contact between the sensor and the tone wheel 
C) Proper mounting of the sensor 
D)  Tone wheel teeth condition 
A) Bias voltage 
B)  Proper contact between the sensor and the tone wheel 
C) Proper mounting of the sensor 
D)  Tone wheel teeth condition

Question 5

A low voltage on the pressure sensor's supply circuit could be caused by any of the following EXCEPT :

Accepted Answer

A) An open in the supply circuit wire. 
B)  A short to ground in the supply circuit wire. 
C) High internal resistance in the sensor. 
D)  Excessive voltage drop in the supply circuit. 
A) An open in the supply circuit wire. 
B)  A short to ground in the supply circuit wire. 
C) High internal resistance in the sensor. 
D)  Excessive voltage drop in the supply circuit.

Question 6

When inspecting Magnetoresistive sensors, all of the following must be checked except:

Accepted Answer

A) AC output signal 
B)  Proper air gap between the sensor and the tone wheel 
C) Proper mounting of the sensor 
D)  Tone wheel teeth condition 
A) AC output signal 
B)  Proper air gap between the sensor and the tone wheel 
C) Proper mounting of the sensor 
D)  Tone wheel teeth condition

Question 7

What is the Whetstone Bridge used to measure?

Accepted Answer

A) Pressure 
B)  Motion 
C) Temperature 
D)  All of these choices 
A) Pressure 
B)  Motion 
C) Temperature 
D)  All of these choices

Question 8

The scan tool displays 5 volts for the ambient temperature sensor. This indicates:

Accepted Answer

A)  An open in the reference voltage circuit. 
B)  An open in the voltage sensing circuit 
C) An open in the sensor. 
D)  All of these choices. 
A)  An open in the reference voltage circuit. 
B)  An open in the voltage sensing circuit 
C) An open in the sensor. 
D)  All of these choices.

Question 9

The piezoelectric sensor operates by:

Accepted Answer

A) Altering the resistance values of the bridge circuit located on a ceramic disc. 
B)  Dropping voltage over a fixed resistor as pressure is applied to the switching transistor. 
C) Generating a voltage within a thin ceramic disc voltage generator that is attached to a diaphragm that stresses the crystals in the disc. 
D) None of these choices. 
A) Altering the resistance values of the bridge circuit located on a ceramic disc. 
B)  Dropping voltage over a fixed resistor as pressure is applied to the switching transistor. 
C) Generating a voltage within a thin ceramic disc voltage generator that is attached to a diaphragm that stresses the crystals in the disc. 
D) None of these choices.

Question 10

All of the following can be used to measure movement or position, EXCEPT:

Accepted Answer

A) Potentiometer 
B) Magnetic pulse generator 
C) Piezoelectric device 
D) Hall-effect sensor 
A) Potentiometer 
B) Magnetic pulse generator 
C) Piezoelectric device 
D) Hall-effect sensor

Question 11

A high voltage on the pressure sensor signal wire would most likely be caused by which of the following?

Accepted Answer

A) An open in the supply circuit. 
B)  An open in the signal circuit . 
C) A short to ground in the supply circuit . 
D)  A short to ground in the signal circuit. . 
A) An open in the supply circuit. 
B)  An open in the signal circuit . 
C) A short to ground in the supply circuit . 
D)  A short to ground in the signal circuit. .

The Wheatstone bridge is:

Which of the following would NOT be considered a computer input?

Which of the following is an example of a piezoelectric sensor?

When inspecting magnetoresistive sensors, all of the following must be checked EXCEPT:

A low voltage on the pressure sensor's supply circuit could be caused by any of the following EXCEPT :

When inspecting Magnetoresistive sensors, all of the following must be checked except:

What is the Whetstone Bridge used to measure?

The scan tool displays 5 volts for the ambient temperature sensor. This indicates:

The piezoelectric sensor operates by:

All of the following can be used to measure movement or position, EXCEPT:

A high voltage on the pressure sensor signal wire would most likely be caused by which of the following?

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Exam 10: Computer Input Sensor Diagnostic Routines

The Wheatstone bridge is:

Which of the following would NOT be considered a computer input?

Which of the following is an example of a piezoelectric sensor?

When inspecting magnetoresistive sensors, all of the following must be checked EXCEPT:

A low voltage on the pressure sensor's supply circuit could be caused by any of the following EXCEPT :

When inspecting Magnetoresistive sensors, all of the following must be checked except:

What is the Whetstone Bridge used to measure?

The scan tool displays 5 volts for the ambient temperature sensor. This indicates:

The piezoelectric sensor operates by:

All of the following can be used to measure movement or position, EXCEPT:

A high voltage on the pressure sensor signal wire would most likely be caused by which of the following?

Introduction to Automotive Electrical and Electronic Systems Safety

Basic Theories Special Tools and Procedures

Electrical and Electronic Components Basic Electrical Troubleshooting and Service

Wiring and Circuit Diagrams Wiring Repair and Reading Circuit Diagrams

Automotive Batteries Battery Diagnosis and Service

Starting Systems and Motor Designs Starting System Diagnosis and Service

Charging Systems Charging System Testing and Service

Lighting Circuits Lighting Circuits Repair and Diagnosis

Introduction to the Body Computer Body Computer System Diagnosis

Vehicle Communication Networks Vehicle Multiplexing Diagnostics

Advanced Lighting Circuits Advanced Lighting Systems Diagnosis and Service

Instrumentation and Warning Lamps and Warning Lamp System Diagnosis and Repair

Accessories Electrical Accessories Diagnosis and Repair

Radio Frequency and Infotainment Systems Servicing Radio Frequency and Infotainment Systems

Passive Restraint Systems Servicing Passive Restraint Systems

Vehicles With Alternative Power Sources Hybrid and High-Voltage System Service

Filters