1 promax - Stuvia US 2025/2026
Outdoor Power Equipment NOCTI Review Questions
with Detailed Verified Answers (100% Correct Answers)
/Already Graded A+
Carburetors with fuel adjustment screws should be adjusted when the
engine is:
a. running at full speed
b. at operating temperature
c. within 30 seconds of start up
d. not running
Ans: 1. at operating temperature
Exampromax - Stuvia US
A carburetor that is referred to as being "too rich" has an excessive amount
Approved By:
of:
a. air
b. water
c. oil
d. fuel
Ans: 2. fuel
What is the most common type of fuel system for small gas engines?
a. computer controlled
b. carburetor
c. fuel injection
d. spill dam
Ans: 3. carburetor
Stale gasoline smells most like:
a. varnish
b. diesel fuel
, 2 promax - Stuvia US 2025/2026
c. turpentine
d. rotten eggs
Ans: 4. turpentine
The most common ratio of air to gasoline for small gas engines is:
a. 10:1
b. 20:1
c. 14.7:1
d. 1:10
Ans: 5. 10:1
Exampromax - Stuvia US
If a fuel pump is flooded, the reason could be:
Approved By:
a. nothing, fuel pumps always flood from time to time
b. too high of a gasoline octane is being used
c. the internal pump parts are worn
d. the engine speed is set too high
Ans: 6. the internal pump parts are worn
A diaphragm carburetor does not have a/an:
a. secondary orifice
b. main orifice
c. idle orifice
d. float
Ans: 7. float
A fuel pump equipped carburetor can be operated by:
a. turning it on
b. a vacuum
c. a governor
, 3 promax - Stuvia US 2025/2026
d. none of the above
Ans: 8. a vacuum
A shut off between the fuel tank and the carburetor can help prevent loss of
fuel through a needle and seat, which can be caused:
a. by transporting the equipment
b. when the equipment is idle for a long time
c. when storing the equipment
d. all of the above
Ans: 9. all of the above
Exampromax - Stuvia US
The throttle on the carburetor reacts and adjusts to the:
Approved By:
a. fuel/air ratio
b. fuel in the float bowl
c. amount of fuel/air mixture going into the cylinder
d. load applied to the engine
Ans: 10. load applied to the engine
Carburetor floats can be made from:
a. cork
b. plastic
c. brass
d. all the above
Ans: 11. all of the above
The purpose of a carburetor is to:
a. store gasoline
b. mix fuel and air
c. maintain the engine speed
, 4 promax - Stuvia US 2025/2026
d. clean the air entering the engine
Ans: 12. mix fuel and air
The venturi is part of the:
a. starter
b. valve system
c. ignition coil
d. carburetor
Ans: 13. carburetor
The purpose of a carburetor float is to maintain a constant level of fuel in
Exampromax - Stuvia US
the:
Approved By:
a. fuel tank
b. float bowl
c. venture
d. fuel line
Ans: 14. float bowl
The area of the carburetor that increases air velocity and reduces air
pressure is called the:
a. float
b. throttle
c. choke plate
d. venturi
Ans: 15. venturi
In a gravity fed fuel system, the fuel reservoir is located:
a. higher than the carburetor
b. lower than the carburetor
Outdoor Power Equipment NOCTI Review Questions
with Detailed Verified Answers (100% Correct Answers)
/Already Graded A+
Carburetors with fuel adjustment screws should be adjusted when the
engine is:
a. running at full speed
b. at operating temperature
c. within 30 seconds of start up
d. not running
Ans: 1. at operating temperature
Exampromax - Stuvia US
A carburetor that is referred to as being "too rich" has an excessive amount
Approved By:
of:
a. air
b. water
c. oil
d. fuel
Ans: 2. fuel
What is the most common type of fuel system for small gas engines?
a. computer controlled
b. carburetor
c. fuel injection
d. spill dam
Ans: 3. carburetor
Stale gasoline smells most like:
a. varnish
b. diesel fuel
, 2 promax - Stuvia US 2025/2026
c. turpentine
d. rotten eggs
Ans: 4. turpentine
The most common ratio of air to gasoline for small gas engines is:
a. 10:1
b. 20:1
c. 14.7:1
d. 1:10
Ans: 5. 10:1
Exampromax - Stuvia US
If a fuel pump is flooded, the reason could be:
Approved By:
a. nothing, fuel pumps always flood from time to time
b. too high of a gasoline octane is being used
c. the internal pump parts are worn
d. the engine speed is set too high
Ans: 6. the internal pump parts are worn
A diaphragm carburetor does not have a/an:
a. secondary orifice
b. main orifice
c. idle orifice
d. float
Ans: 7. float
A fuel pump equipped carburetor can be operated by:
a. turning it on
b. a vacuum
c. a governor
, 3 promax - Stuvia US 2025/2026
d. none of the above
Ans: 8. a vacuum
A shut off between the fuel tank and the carburetor can help prevent loss of
fuel through a needle and seat, which can be caused:
a. by transporting the equipment
b. when the equipment is idle for a long time
c. when storing the equipment
d. all of the above
Ans: 9. all of the above
Exampromax - Stuvia US
The throttle on the carburetor reacts and adjusts to the:
Approved By:
a. fuel/air ratio
b. fuel in the float bowl
c. amount of fuel/air mixture going into the cylinder
d. load applied to the engine
Ans: 10. load applied to the engine
Carburetor floats can be made from:
a. cork
b. plastic
c. brass
d. all the above
Ans: 11. all of the above
The purpose of a carburetor is to:
a. store gasoline
b. mix fuel and air
c. maintain the engine speed
, 4 promax - Stuvia US 2025/2026
d. clean the air entering the engine
Ans: 12. mix fuel and air
The venturi is part of the:
a. starter
b. valve system
c. ignition coil
d. carburetor
Ans: 13. carburetor
The purpose of a carburetor float is to maintain a constant level of fuel in
Exampromax - Stuvia US
the:
Approved By:
a. fuel tank
b. float bowl
c. venture
d. fuel line
Ans: 14. float bowl
The area of the carburetor that increases air velocity and reduces air
pressure is called the:
a. float
b. throttle
c. choke plate
d. venturi
Ans: 15. venturi
In a gravity fed fuel system, the fuel reservoir is located:
a. higher than the carburetor
b. lower than the carburetor
