RED SEAL ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
◍ Upon inspection of a piston the technician finds that scuffing has occurred.
What is this an indication of?
A) It is an indication that the rings need replacing.
B) It is an indication that there was a lack of lubrication.
C) It is an indication that the crankshaft is off balance.
D) It is an indication that the piston has been hitting the valves..
Answer: Correct answer=B
◍ What are flood lamps on a machine controlled by?
A) They are controlled by a pushbutton switch.
B) They are controlled by the key switch controlled circuits.
C) They are controlled by a type IV breaker..
Answer: Correct answer=B
◍ When troubleshooting a mid efficiency furnace, the most useful tool is:.
Answer: the LED diagnostic chart.
◍ When referring to a diesel engine equipped with a governor, what is the
condition where an engine has a zero speed droop defined as?
A) It is defined as governor sensitivity.
B) It is defined as isochronous governing.
C) It is defined as speed droop.
D) It is defined as governor stability..
Answer: Correct answer=B
◍ What is a hydraulic steering system where the hydraulic steering pump and
hydraulic motors are connected directly together called?
A) It is called a closed loop system.
B) It is called a directional control system.
, C) It is called an orbital system.
D) It is called a spool type system..
Answer: Correct answer=A
◍ What should you do if after replacing the fuel filter of a diesel engine it is
apparent that there still is air trapped in the system?
A) You should run the engine until the air is removed.
B) You should loosen the fuel filter to allow the air to escape.
C) You should bleed the fuel system.
D) You should replace the fuel filter..
Answer: Correct answer=C
◍ Setting up a Oxy/Act torch what do you do with the acetylene bottle?
Select one:
a. Open bottle fully at 5 PSI
b. Open bottle no more than 1 turn at 5 PSI
c. Open bottle fully at no more than 15 PSI
d. Open bottle 1 turn at no more than 15 PSI.
Answer: The correct answer is: Open bottle 1 turn at no more than 15 PSI
◍ Trap arms and fixture drains are to be installed with roughly how much of
an inch downward slope for every foot of trap arm length?
A. Half
B. Seven Eighths
C. Three Quarters
D. One Quarter.
Answer: D. One Quarter
◍ An underground water-bearing strata that is capable of yielding a supply of
water is the definition of a/an ________..
Answer: aquifer
◍ What equipment is required if coliforms are detected in a water system.
Answer: Chlorinator.
◍ Which of the following fuel filter classifications would typically filter
, particles in the range of 1 micron?
A) tertiary
B) auxiliary
C) final stage
D) booster.
Answer: Correct answer=C
◍ cendre.
Answer: ash - cheese ripened in Ash
◍ It is recommended to recondition both rear foundation brakes on a single
axle tractor at the same time.
A) True
B) False.
Answer: Correct answer=A
◍ egg storage temp.
Answer: below 40 (4) degrees and humidity of 70-80%
◍ Fifteen cubic feet of natural gas will generate _____ BTU
A. 150,000
B. 15
C. 1500
D. 15,000.
Answer: D. 15,000
◍ The camshaft is support by what in the block or head?
A) It is supported by the rocker arm in the block or head.
B) It is supported by the bearing journals in the block or head.
C) It is supported by the indexing mechanisms in the block or head.
D) It is supported by the push rod in the block or head..
Answer: Correct answer=B
◍ Thermally operated dampers are constructed so that the damper falls closed
if the bimetal fails.
True or False?.
, Answer: False
◍ size of every building drain/sewer downstream of the main c/o shall be a
minimum of?.
Answer: 4" (100mm)
◍ Why do both tubeless and tube type tires often have breakers made of
shredded steel?
A) They have it to protect the tire from punctures.
B) They have it to make the sidewall of the tire stronger.
C) They have it to make a stronger seal at the rim.
D) They have it to help cushion the ride in rough terrain..
Answer: Correct answer=A
◍ When referring to a vehicle stopping distance how is traction just before
wheel lockup?
A) It is the least just before wheel lockup.
B) It is the greatest just before wheel lockup.
C) It is the point at wheel lockup.
D) It is the time at wheel lockup..
Answer: Correct answer=B
◍ What must be done to verify a zero-energy state?.
Answer: Methods to verify must be described and followed according to
regulations.
◍ Aluminum in oil sample could be from?
Select one:
a. Pistons
b. Camshaft
c. Con Rods
d. Crankshaft.
Answer: The correct answer is: Pistons
◍ What cuts are generally available for files?
A) The curved.
QUESTIONS WITH ANSWERS GRADED A+
◍ Upon inspection of a piston the technician finds that scuffing has occurred.
What is this an indication of?
A) It is an indication that the rings need replacing.
B) It is an indication that there was a lack of lubrication.
C) It is an indication that the crankshaft is off balance.
D) It is an indication that the piston has been hitting the valves..
Answer: Correct answer=B
◍ What are flood lamps on a machine controlled by?
A) They are controlled by a pushbutton switch.
B) They are controlled by the key switch controlled circuits.
C) They are controlled by a type IV breaker..
Answer: Correct answer=B
◍ When troubleshooting a mid efficiency furnace, the most useful tool is:.
Answer: the LED diagnostic chart.
◍ When referring to a diesel engine equipped with a governor, what is the
condition where an engine has a zero speed droop defined as?
A) It is defined as governor sensitivity.
B) It is defined as isochronous governing.
C) It is defined as speed droop.
D) It is defined as governor stability..
Answer: Correct answer=B
◍ What is a hydraulic steering system where the hydraulic steering pump and
hydraulic motors are connected directly together called?
A) It is called a closed loop system.
B) It is called a directional control system.
, C) It is called an orbital system.
D) It is called a spool type system..
Answer: Correct answer=A
◍ What should you do if after replacing the fuel filter of a diesel engine it is
apparent that there still is air trapped in the system?
A) You should run the engine until the air is removed.
B) You should loosen the fuel filter to allow the air to escape.
C) You should bleed the fuel system.
D) You should replace the fuel filter..
Answer: Correct answer=C
◍ Setting up a Oxy/Act torch what do you do with the acetylene bottle?
Select one:
a. Open bottle fully at 5 PSI
b. Open bottle no more than 1 turn at 5 PSI
c. Open bottle fully at no more than 15 PSI
d. Open bottle 1 turn at no more than 15 PSI.
Answer: The correct answer is: Open bottle 1 turn at no more than 15 PSI
◍ Trap arms and fixture drains are to be installed with roughly how much of
an inch downward slope for every foot of trap arm length?
A. Half
B. Seven Eighths
C. Three Quarters
D. One Quarter.
Answer: D. One Quarter
◍ An underground water-bearing strata that is capable of yielding a supply of
water is the definition of a/an ________..
Answer: aquifer
◍ What equipment is required if coliforms are detected in a water system.
Answer: Chlorinator.
◍ Which of the following fuel filter classifications would typically filter
, particles in the range of 1 micron?
A) tertiary
B) auxiliary
C) final stage
D) booster.
Answer: Correct answer=C
◍ cendre.
Answer: ash - cheese ripened in Ash
◍ It is recommended to recondition both rear foundation brakes on a single
axle tractor at the same time.
A) True
B) False.
Answer: Correct answer=A
◍ egg storage temp.
Answer: below 40 (4) degrees and humidity of 70-80%
◍ Fifteen cubic feet of natural gas will generate _____ BTU
A. 150,000
B. 15
C. 1500
D. 15,000.
Answer: D. 15,000
◍ The camshaft is support by what in the block or head?
A) It is supported by the rocker arm in the block or head.
B) It is supported by the bearing journals in the block or head.
C) It is supported by the indexing mechanisms in the block or head.
D) It is supported by the push rod in the block or head..
Answer: Correct answer=B
◍ Thermally operated dampers are constructed so that the damper falls closed
if the bimetal fails.
True or False?.
, Answer: False
◍ size of every building drain/sewer downstream of the main c/o shall be a
minimum of?.
Answer: 4" (100mm)
◍ Why do both tubeless and tube type tires often have breakers made of
shredded steel?
A) They have it to protect the tire from punctures.
B) They have it to make the sidewall of the tire stronger.
C) They have it to make a stronger seal at the rim.
D) They have it to help cushion the ride in rough terrain..
Answer: Correct answer=A
◍ When referring to a vehicle stopping distance how is traction just before
wheel lockup?
A) It is the least just before wheel lockup.
B) It is the greatest just before wheel lockup.
C) It is the point at wheel lockup.
D) It is the time at wheel lockup..
Answer: Correct answer=B
◍ What must be done to verify a zero-energy state?.
Answer: Methods to verify must be described and followed according to
regulations.
◍ Aluminum in oil sample could be from?
Select one:
a. Pistons
b. Camshaft
c. Con Rods
d. Crankshaft.
Answer: The correct answer is: Pistons
◍ What cuts are generally available for files?
A) The curved.
