1|Page
CDC 4Y051 ACTUAL EXAM PREP 2026
ALL QUESTIONS AND CORRECT
DETAILED ANSWERS ALREADY A
GRADED WITH EXPERT FEEDBACK
|NEW AND REVISED
(001) The level of maintenance that includes actions relating to
proper operation, daily inspection, cleaning, simple lubrication,
and minor exterior repair and operational adjustment of equipment
is called
o user.
o depot.
o intermediate.
o organizational. - ANSWER- a. user
(001) Inspecting, servicing, lubricating, adjusting, repairing,
calibrating, modifying, and replacing parts of assemblies and
subassemblies are included in what level of maintenance?
o User.
o Depot.
o Intermediate.
o Organizational. - ANSWER- d. Organizational
(001) Major repairs, overhauls, rebuilding of components and
subassemblies, and manufacture of parts are normally limited to
what level of maintenance?
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o User.
o Depot.
o Intermediate.
o Organizational. - ANSWER- b. Depot
(002) What level of maintenance includes the systematic care,
servicing, and inspection of equipment, and detection and
correction of all minor faults before they develop into major
defects?
o Certification.
o Calibration.
o Preventive.
o Contract. - ANSWER- c. Preventive
(002) What type of maintenance involves troubleshooting to isolate
the cause of equipment malfunction, and replacing or adjusting
components or subsystems to restore normal function, safety,
performance, and reliability of medical equipment?
o Contract.
o Scheduled.
o Preventive.
o Unscheduled. - ANSWER- d. Unscheduled
(003) How can you stop a dental chair once the preposition or auto
return switch is activated?
o Cannot be stopped.
o Press another switch.
o Press the safety stop plate.
o Press any other switch or the safety stop plate. - ANSWER-
d. Press any other switch or the safety stop plate.
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(003) What must you do if the preset positions of the preposition or
auto return switches on the dental chair are not correct for
treatment?
o Request a BMET perform preventive maintenance.
o Consult the manufacturer's instructions and adjust them.
o Discontinue using these switches.
o Nothing; they cannot be changed. - ANSWER- b. Consult the
manufacturer's instructions and adjust them.
(003) What feature allows the dental chair to rotate to
approximately 45 degrees from either side of the center and then
lock in position? a. Chair control switches.
b. Foot control switches.
c. Safety stop plate.
d. Swivel/brake. - ANSWER- d. Swivel/brake
(003) Repairing or replacing the inner workings of the dental
chair's hydraulic and electrical systems is done by the
o BMET.
o dental assistant.
o clinic NCOIC.
o dentist. - ANSWER- a. BMET
(004) What dental unit system is affected by a malfunctioning
water system?
o 3-way syringe only.
o Tubing flush systems only.
o 3-way syringe and handpiece water spray only.
CDC 4Y051 ACTUAL EXAM PREP 2026
ALL QUESTIONS AND CORRECT
DETAILED ANSWERS ALREADY A
GRADED WITH EXPERT FEEDBACK
|NEW AND REVISED
(001) The level of maintenance that includes actions relating to
proper operation, daily inspection, cleaning, simple lubrication,
and minor exterior repair and operational adjustment of equipment
is called
o user.
o depot.
o intermediate.
o organizational. - ANSWER- a. user
(001) Inspecting, servicing, lubricating, adjusting, repairing,
calibrating, modifying, and replacing parts of assemblies and
subassemblies are included in what level of maintenance?
o User.
o Depot.
o Intermediate.
o Organizational. - ANSWER- d. Organizational
(001) Major repairs, overhauls, rebuilding of components and
subassemblies, and manufacture of parts are normally limited to
what level of maintenance?
,2|Page
o User.
o Depot.
o Intermediate.
o Organizational. - ANSWER- b. Depot
(002) What level of maintenance includes the systematic care,
servicing, and inspection of equipment, and detection and
correction of all minor faults before they develop into major
defects?
o Certification.
o Calibration.
o Preventive.
o Contract. - ANSWER- c. Preventive
(002) What type of maintenance involves troubleshooting to isolate
the cause of equipment malfunction, and replacing or adjusting
components or subsystems to restore normal function, safety,
performance, and reliability of medical equipment?
o Contract.
o Scheduled.
o Preventive.
o Unscheduled. - ANSWER- d. Unscheduled
(003) How can you stop a dental chair once the preposition or auto
return switch is activated?
o Cannot be stopped.
o Press another switch.
o Press the safety stop plate.
o Press any other switch or the safety stop plate. - ANSWER-
d. Press any other switch or the safety stop plate.
, 3|Page
(003) What must you do if the preset positions of the preposition or
auto return switches on the dental chair are not correct for
treatment?
o Request a BMET perform preventive maintenance.
o Consult the manufacturer's instructions and adjust them.
o Discontinue using these switches.
o Nothing; they cannot be changed. - ANSWER- b. Consult the
manufacturer's instructions and adjust them.
(003) What feature allows the dental chair to rotate to
approximately 45 degrees from either side of the center and then
lock in position? a. Chair control switches.
b. Foot control switches.
c. Safety stop plate.
d. Swivel/brake. - ANSWER- d. Swivel/brake
(003) Repairing or replacing the inner workings of the dental
chair's hydraulic and electrical systems is done by the
o BMET.
o dental assistant.
o clinic NCOIC.
o dentist. - ANSWER- a. BMET
(004) What dental unit system is affected by a malfunctioning
water system?
o 3-way syringe only.
o Tubing flush systems only.
o 3-way syringe and handpiece water spray only.
