1 promax - Stuvia US 2025/2026
Outdoor Power 1st Semester Exam Questions with
Detailed Verified Answers (100% Correct Answers)
/Already Graded A+
The primary purpose of the ignition system of a small gas engine is to
provide sufficient electrical voltage to discharge ____________.
Ans: A spark between the electrodes of the spark plug.
The ignition system must be capable of producing as much as _____ volts
to force the electrical current across the plug gap.
Ans: 30,000
Exampromax - Stuvia US
A single cylinder, 4-cycle engine running at 3600 rpm requires ____
Approved By:
ignition sparks per minute.
Ans: 1800
Magneto systems produce electrical current for ignition without a primary
source of ___________.
Ans: Electricity
In an ignition coil, the primary windings are ___________.
Ans: Heavy gage with few turns
List 3 characteristics the ceramic spark plug insulator must have.
Ans: High mechanical strength
Good heat conductor
Resistance to heat shock
Ribs on the ceramic spark plug insulator are there to prevent _________.
, 2 promax - Stuvia US 2025/2026
Ans: Flashover
A cold spark plug installed in a cool running engine will tend to ____.
Ans: Foul
In figuring spark plug heat range, the length of the _____________
determine how far and how well the heat travels.
Ans: Insulator nose
The hottest part of the spark plug is the ___ of the insulator.
Ans: tip
Exampromax - Stuvia US
Approved By:
Experiments show that pre-ignition is likely to occur if combustion
chamber temperature exceeds _______ in a 4 cycle engine.
Ans: 1750 degrees F
If the insulator tip temperature is below 700 degrees F plug _______ or
________ is likely to occur.
Ans: Fouling
Shorting
The breaker point contacts are made of ________
Ans: Tungsten
A(n) ___ ignition system is a flywheel magneto inductive system that
employs mechanical breaker contacts to time or trigger system.
Ans: MBI
Outdoor Power 1st Semester Exam Questions with
Detailed Verified Answers (100% Correct Answers)
/Already Graded A+
The primary purpose of the ignition system of a small gas engine is to
provide sufficient electrical voltage to discharge ____________.
Ans: A spark between the electrodes of the spark plug.
The ignition system must be capable of producing as much as _____ volts
to force the electrical current across the plug gap.
Ans: 30,000
Exampromax - Stuvia US
A single cylinder, 4-cycle engine running at 3600 rpm requires ____
Approved By:
ignition sparks per minute.
Ans: 1800
Magneto systems produce electrical current for ignition without a primary
source of ___________.
Ans: Electricity
In an ignition coil, the primary windings are ___________.
Ans: Heavy gage with few turns
List 3 characteristics the ceramic spark plug insulator must have.
Ans: High mechanical strength
Good heat conductor
Resistance to heat shock
Ribs on the ceramic spark plug insulator are there to prevent _________.
, 2 promax - Stuvia US 2025/2026
Ans: Flashover
A cold spark plug installed in a cool running engine will tend to ____.
Ans: Foul
In figuring spark plug heat range, the length of the _____________
determine how far and how well the heat travels.
Ans: Insulator nose
The hottest part of the spark plug is the ___ of the insulator.
Ans: tip
Exampromax - Stuvia US
Approved By:
Experiments show that pre-ignition is likely to occur if combustion
chamber temperature exceeds _______ in a 4 cycle engine.
Ans: 1750 degrees F
If the insulator tip temperature is below 700 degrees F plug _______ or
________ is likely to occur.
Ans: Fouling
Shorting
The breaker point contacts are made of ________
Ans: Tungsten
A(n) ___ ignition system is a flywheel magneto inductive system that
employs mechanical breaker contacts to time or trigger system.
Ans: MBI
