HET Red Seal- Heavy Duty Equipment Technician Red Seal
Certification EXAM 2026-2027 LATEST UPDATED VERSION 2000
QUESTIONS AND ANSWERS
What type of release system is the engine compression brake of a diesel engine?
A) It is an exhaust release system.
B) It is a fuel release system.
C) It is a compression release system.
D) It is an electronics release system. - answer>>Correct answer=C
Water/oil emulsions are made of what percent water?
A) They are 70 percent water.
B) They are 60 percent water.
C) They are 50 percent water.
D) They are 40 percent water. - answer>>Correct answer=B
How is a pressure gauge installed with respect to the main line?
A) It is installed in parallel with the main line.
B) It is installed in series with the main line.
Correct answer=A
What is the most effective and less damaging method for lifting an object?
A) Bend your back and extend your arms to reach the object.
B) Bend your knees and keep your back erect, lift object by using your legs.
C) Try to carry the object over your head.
D) Use the muscles on your lower back to lift. - answer>>Correct answer=B
What is an Open Centre Hydraulic System often called?
A) Constant pressure.
B) Constant flow.
C) Constant torque.
,D) Constant hydrostatic. - answer>>Correct answer=B
What type of piston ring is usually chromium-plated to prevent scuffing?
A) The cast iron piston ring.
B) The ductile cast iron piston ring.
C) The steel alloy piston ring.
D) The stainless steel piston ring. - answer>>Correct answer=C
A NC valve closes when pilot pressure becomes great enough to overcome spring force.
A) True
B) False - answer>>Correct answer=B
What type of spur type gears are most commonly used with external gear type pumps?
A) Hunting.
B) Non-hunting. - answer>>Correct answer=B
What is a duty cycle?
A) A torque rating.
B) A voltage rating.
C) The amount of time a device is on compared to off.
D) The amount of current expressed as a percent that leads to overheating. - answer>>Correct answer=C
If the oil in a hydraulic lifter leaks down too fast or the lifter does not fill adequately what could it result in?
A) It could result in a light tapping noise.
B) It could result in increased fuel consumption.
C) It could result in reduced torque.
D) It could result in overheated valves. - answer>>Correct answer=A
With a torque motor, how will an increase in applied voltage affect armature movement?
A) Greater movement results.
,B) Less movement results.
C) There is no change to the armature. - answer>>Correct answer=A
When combustion occurs in an engine the force on the piston is transferred to the crankshaft via which
component?
A) It is transferred via the flywheel.
B) It is transferred via the connecting rod.
C) It is transferred via the piston rings.
D) It is transferred via the piston pin. - answer>>Correct answer=B
What design of piston ring is commonly used on diesel engines because it is more resistant to carbon buildup?
A) The design commonly used is the barrel face.
B) The design commonly used is the keystone.
C) The design commonly used is the inside bevel.
D) The design commonly used is the rectangular. - answer>>Correct answer=B
Which of the following is true with respect to PPE?
A) The employer is not responsible for outlining limitations PPE.
B) The employer is responsible for inspecting PPE equipment prior to the employee using it.
C) The use of PPE equipment is considered the highest level of managing hazards in the workplace.
D) The worker cannot modify PPE equipment as required so it fits properly. - answer>>Correct answer=B
Which of the following best describes an internal or external washer?
A) They are often referred to as jams
B) They are referred to as shake proof
C) It is intended to grip the surface of a of the material to prevent slippage
D) They are used to protect the surface of an area - answer>>Correct answer=B
On which of the following hydraulic axial motors can the swash plate angle be changed?
A) Variable displacement.
B) Fixed displacement.
, C) Bent axis. - answer>>Correct answer=A
Which is the most commonly used shackle in rigging?
A) Anchor type with screw pin.
B) Anchor type with round pin.
C) Chain type with screw pin.
D) Chain type with round pin. - answer>>Correct answer=A
When referring to API classifications of engine oils, the oil used ion a gasoline engine would typically have what
type of classification?
A) It will have a CI classification.
B) It will have a DI classification.
C) It will have a GI classification.
D) It will have a SI classification. - answer>>Correct answer=D
A technician servicing a machine with a cushion hitch notices that the cylinder rod does not come out to its full
extent. What could the problem be?
A) The pump servo valve setting is too low.
B) The O-ring seal in the system has failed.
C) The pump is worn out.
D) All of the above. - answer>>Correct answer=D
When referring to heavy-duty diesel engines, the EGR valve will close to allow exhaust gas to enter the intake
manifold.
A) True
B) False - answer>>Correct answer=B
When referring to variable displacement turbochargers, the two common types are the sliding vane type and what
other type?
A) And the fixed vane type.
B) And the pivoting vane type.
C) And the circular vane type.
Certification EXAM 2026-2027 LATEST UPDATED VERSION 2000
QUESTIONS AND ANSWERS
What type of release system is the engine compression brake of a diesel engine?
A) It is an exhaust release system.
B) It is a fuel release system.
C) It is a compression release system.
D) It is an electronics release system. - answer>>Correct answer=C
Water/oil emulsions are made of what percent water?
A) They are 70 percent water.
B) They are 60 percent water.
C) They are 50 percent water.
D) They are 40 percent water. - answer>>Correct answer=B
How is a pressure gauge installed with respect to the main line?
A) It is installed in parallel with the main line.
B) It is installed in series with the main line.
Correct answer=A
What is the most effective and less damaging method for lifting an object?
A) Bend your back and extend your arms to reach the object.
B) Bend your knees and keep your back erect, lift object by using your legs.
C) Try to carry the object over your head.
D) Use the muscles on your lower back to lift. - answer>>Correct answer=B
What is an Open Centre Hydraulic System often called?
A) Constant pressure.
B) Constant flow.
C) Constant torque.
,D) Constant hydrostatic. - answer>>Correct answer=B
What type of piston ring is usually chromium-plated to prevent scuffing?
A) The cast iron piston ring.
B) The ductile cast iron piston ring.
C) The steel alloy piston ring.
D) The stainless steel piston ring. - answer>>Correct answer=C
A NC valve closes when pilot pressure becomes great enough to overcome spring force.
A) True
B) False - answer>>Correct answer=B
What type of spur type gears are most commonly used with external gear type pumps?
A) Hunting.
B) Non-hunting. - answer>>Correct answer=B
What is a duty cycle?
A) A torque rating.
B) A voltage rating.
C) The amount of time a device is on compared to off.
D) The amount of current expressed as a percent that leads to overheating. - answer>>Correct answer=C
If the oil in a hydraulic lifter leaks down too fast or the lifter does not fill adequately what could it result in?
A) It could result in a light tapping noise.
B) It could result in increased fuel consumption.
C) It could result in reduced torque.
D) It could result in overheated valves. - answer>>Correct answer=A
With a torque motor, how will an increase in applied voltage affect armature movement?
A) Greater movement results.
,B) Less movement results.
C) There is no change to the armature. - answer>>Correct answer=A
When combustion occurs in an engine the force on the piston is transferred to the crankshaft via which
component?
A) It is transferred via the flywheel.
B) It is transferred via the connecting rod.
C) It is transferred via the piston rings.
D) It is transferred via the piston pin. - answer>>Correct answer=B
What design of piston ring is commonly used on diesel engines because it is more resistant to carbon buildup?
A) The design commonly used is the barrel face.
B) The design commonly used is the keystone.
C) The design commonly used is the inside bevel.
D) The design commonly used is the rectangular. - answer>>Correct answer=B
Which of the following is true with respect to PPE?
A) The employer is not responsible for outlining limitations PPE.
B) The employer is responsible for inspecting PPE equipment prior to the employee using it.
C) The use of PPE equipment is considered the highest level of managing hazards in the workplace.
D) The worker cannot modify PPE equipment as required so it fits properly. - answer>>Correct answer=B
Which of the following best describes an internal or external washer?
A) They are often referred to as jams
B) They are referred to as shake proof
C) It is intended to grip the surface of a of the material to prevent slippage
D) They are used to protect the surface of an area - answer>>Correct answer=B
On which of the following hydraulic axial motors can the swash plate angle be changed?
A) Variable displacement.
B) Fixed displacement.
, C) Bent axis. - answer>>Correct answer=A
Which is the most commonly used shackle in rigging?
A) Anchor type with screw pin.
B) Anchor type with round pin.
C) Chain type with screw pin.
D) Chain type with round pin. - answer>>Correct answer=A
When referring to API classifications of engine oils, the oil used ion a gasoline engine would typically have what
type of classification?
A) It will have a CI classification.
B) It will have a DI classification.
C) It will have a GI classification.
D) It will have a SI classification. - answer>>Correct answer=D
A technician servicing a machine with a cushion hitch notices that the cylinder rod does not come out to its full
extent. What could the problem be?
A) The pump servo valve setting is too low.
B) The O-ring seal in the system has failed.
C) The pump is worn out.
D) All of the above. - answer>>Correct answer=D
When referring to heavy-duty diesel engines, the EGR valve will close to allow exhaust gas to enter the intake
manifold.
A) True
B) False - answer>>Correct answer=B
When referring to variable displacement turbochargers, the two common types are the sliding vane type and what
other type?
A) And the fixed vane type.
B) And the pivoting vane type.
C) And the circular vane type.
