Question 1

All of the following statements are true EXCEPT:

Accepted Answer

A) a throttle position sensor (TPS) sends a voltage signal to the computer that relays throttle position. 
B) a manifold absolute pressure (MAP) sensor or mass airflow sensor (MAF) provides intake manifold pressure data to the computer. 
C) the primary trigger in the distributor or on the crankshaft gives the computer the ability to interpret engine speed. 
D) a knock sensor provides information to the computer so it can make adjustments as engine temperature changes. 
A) a throttle position sensor (TPS) sends a voltage signal to the computer that relays throttle position. 
B) a manifold absolute pressure (MAP) sensor or mass airflow sensor (MAF) provides intake manifold pressure data to the computer. 
C) the primary trigger in the distributor or on the crankshaft gives the computer the ability to interpret engine speed. 
D) a knock sensor provides information to the computer so it can make adjustments as engine temperature changes. D

Question 2

All of the following statements are true EXCEPT:

Accepted Answer

A) in SAE terminology, ignition systems without distributors are known as EI. 
B) EI has no rotor or distributor cap but always has spark plug cables. 
C) a typical crank or cam sensor has a spaced ring with one or more unevenly spaced teeth from which the computer can determine crankshaft position. 
D) advantages of EI include reduced cost and lower maintenance. 
A) in SAE terminology, ignition systems without distributors are known as EI. 
B) EI has no rotor or distributor cap but always has spark plug cables. 
C) a typical crank or cam sensor has a spaced ring with one or more unevenly spaced teeth from which the computer can determine crankshaft position. 
D) advantages of EI include reduced cost and lower maintenance. B

Question 3

The length of the threaded area of a spark plug is called its ____.

Accepted Answer

A) heat range 
B) reach 
C) trigger 
D) dwell 
A) heat range 
B) reach 
C) trigger 
D) dwell B

Question 4

When there are fewer coils in the primary part of a transformer, it is a step-down transformer.

Accepted Answer

A) True 
 B)False

Question 5

Coil-on-plug (COP) ignition systems supply a spark to each cylinder through individual spark plug cables.

Accepted Answer

A) True 
 B)False

Question 6

What is the advantage of a CKP sensor with more than one trigger?

Accepted Answer

The sensor ring that has more

Question 7

____________________ is the length of time that current is flowing in the coil primary winding.

Accepted Answer

The answer of ____________________ is the length of time that...

Question 8

When an eight-cylinder engine is running at 3,000 rpm, its ignition coil must do remarkable things. If a single coil is used, its magnetic field must be able to build up and collapse 200 times in 1 second.

Accepted Answer

A) True 
 B)False

Question 9

The four types of sensors that trigger spark timing are the Hall switch, the magnetorisistive sensor, the optical sensor and the ____________________ AC generator.

Accepted Answer

The answer of The four types of sensors that trigger...

Question 10

Which of the following is LEAST-Likely a type of sensor?

Accepted Answer

A) Permanent magnet AC generator 
B) Magnetoresistive sensor 
C) Optical sensor 
D) Reach sensor 
A) Permanent magnet AC generator 
B) Magnetoresistive sensor 
C) Optical sensor 
D) Reach sensor

Question 11

In the ____________________ process, current is passed through a thin semiconductor material while a magnetic field passes through it.

Accepted Answer

The answer of In the ____________________ process, current is passed...

Question 12

While having a discussion, Technician A says that a Hall-effect signal generates an AC signal. Technician B says that it does not generate a signal. Rather its signal is a rise in voltage, followed by a drop in voltage. Who is correct?

Accepted Answer

A) A only 
B) B only 
C) Both A and B 
D) Neither A nor B 
A) A only 
B) B only 
C) Both A and B 
D) Neither A nor B

Question 13

The sensor that MOST-Likely uses a beam of light to control the primary circuit is the:

Accepted Answer

A) Hall-effect sensor 
B) MR sensor 
C) photoelectric sensor 
D) crank angle sensor 
A) Hall-effect sensor 
B) MR sensor 
C) photoelectric sensor 
D) crank angle sensor

Question 14

Fouling means that the spark plug gets covered with material, and a spark will not easily jump its gap.

Accepted Answer

A) True 
 B)False

Question 15

____________________ time depends on the amount of current flowing in the primary winding.

Accepted Answer

The answer of ____________________ time depends on the amount of...

Question 16

Which of the following statements is LEAST-Likely true?

Accepted Answer

A) Hypalon has better high-temperature resistance than Silicone. 
B) EI systems are similar to the electromechanical contact point systems they replaced.However, electronic systems are far superior and require very little maintenance. 
C) Nonelectronic ignition systems used mechanical contact points to alternatively energize and then open the primary ignition circuit. 
D) Most ignition systems control primary current flow on the ground side of the coil. 
A) Hypalon has better high-temperature resistance than Silicone. 
B) EI systems are similar to the electromechanical contact point systems they replaced.However, electronic systems are far superior and require very little maintenance. 
C) Nonelectronic ignition systems used mechanical contact points to alternatively energize and then open the primary ignition circuit. 
D) Most ignition systems control primary current flow on the ground side of the coil.

Question 17

While having a discussion, Technician A says that the length of time required for ignition coil primary winding saturation varies with engine speed. At low engine rpm, dwell is longer. Technician B says that at low engine rpm, there is more time between cylinder firings than at high speeds, so dwell time can be shorter. Who is correct?

Accepted Answer

A) A only 
B) B only 
C) Both A and B 
D) Neither A nor B 
A) A only 
B) B only 
C) Both A and B 
D) Neither A nor B

Question 18

List five parts of the primary ignition system.

Accepted Answer

The primary ignition system includes the

Question 19

The sensor that will MOST-Likely determine the speed of the engine and the position of the crankshaft is the:

Accepted Answer

A) EI sensor 
B) DIS sensor 
C) CKP sensor 
D) Hall-effect sensor 
A) EI sensor 
B) DIS sensor 
C) CKP sensor 
D) Hall-effect sensor

Question 20

Spark plugs often have an internal resistor that lowers the firing voltage output of the coil.

Accepted Answer

A) True 
 B)False

Exam 37: Ignition System Fundamentals

All of the following statements are true EXCEPT:

All of the following statements are true EXCEPT:

The length of the threaded area of a spark plug is called its ____.

When there are fewer coils in the primary part of a transformer, it is a step-down transformer.

Coil-on-plug (COP) ignition systems supply a spark to each cylinder through individual spark plug cables.

What is the advantage of a CKP sensor with more than one trigger?

____________________ is the length of time that current is flowing in the coil primary winding.

When an eight-cylinder engine is running at 3,000 rpm, its ignition coil must do remarkable things. If a single coil is used, its magnetic field must be able to build up and collapse 200 times in 1 second.

The four types of sensors that trigger spark timing are the Hall switch, the magnetorisistive sensor, the optical sensor and the ____________________ AC generator.

Which of the following is LEAST-Likely a type of sensor?

In the ____________________ process, current is passed through a thin semiconductor material while a magnetic field passes through it.

While having a discussion, Technician A says that a Hall-effect signal generates an AC signal. Technician B says that it does not generate a signal. Rather its signal is a rise in voltage, followed by a drop in voltage. Who is correct?

The sensor that MOST-Likely uses a beam of light to control the primary circuit is the:

Fouling means that the spark plug gets covered with material, and a spark will not easily jump its gap.

____________________ time depends on the amount of current flowing in the primary winding.

Which of the following statements is LEAST-Likely true?

List five parts of the primary ignition system.

The sensor that will MOST-Likely determine the speed of the engine and the position of the crankshaft is the:

Spark plugs often have an internal resistor that lowers the firing voltage output of the coil.

Introduction to the Automobile

Automotive Careers and Technician Certification

Shop Safety

Shop Management, Service Records, and Parts

Locating Service Information and Specifications

Measuring Tools and Systems

Hardware, Fasteners, Drills, and Thread Repair

Shop Tools

General Shop Equipment

Cleaning Equipment and Methods

Lifting Equipment and Air Compressors

Engine Lubrication

Underhood and Body Inspection Vehicle on Ground

Undercar Inspection and Service

Introduction to the Engine

Engine Classifications and Types

Engine Size and Measurements

Engine Upper End

Engine Lower End and Lubrication System Theory

Cooling System Theory

Cooling System Service

Automotive Belts

Automotive Hoses

Automotive Plumbing: Tubing and Pipe

Basic Electrical System Theory and Repairs

Battery Fundamentals

Battery Service

Starting System Fundamentals

Starting System Service

Charging System Fundamentals

Charging System Service

Lighting and Wiring Fundamentals

Lighting and Wiring Service

Safety, Security, Comfort Systems, and Electrical Accessories

Heating and Air-Conditioning Fundamentals

Heating and Air-Conditioning Service

Ignition System Service

Petroleum Fuels and Alternative Fuel Technologies

Fuel System Fundamentals, Gasoline and Diesel

Fuel System Service

Intake and Exhaust Systemsturbochargers and Superchargers

Emission Control System Fundamentals, Gasoline and Diesel

Emission Control System Service

Electronics and Computer Systems Fundamentals

Electronics and Computer Systems Service

Advanced Emission and On-Board Diagnostics Obd

Diagnosing Engine Performance Problems

Diagnosing Engine Mechanical Problems

Engine Removal and Disassembly

Engine Sealing Gaskets, Fastener Torque

Engine Diagnosis and Service: Cylinder Head and Valve Train

Engine Diagnosis and Service: Block, Crankshaft, Bearings, and Lubrication System

Engine Diagnosis and Service: Piston, Piston Rings, Connecting Rod, Engine Balancing

Ordering Parts, Short and Long Blocks, Engine Assembly

Engine Installation, Break-In, and In-Chassis Repairs

Brake Fundamentals

Brake Service

Antilock Brakes, Traction, and Stability Control

Bearings, Seals, and Greases

Tire and Wheel Theory