Clinical Lab Equipment Repair
Technician Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
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1. What is the primary purpose of preventive maintenance on clinical
laboratory equipment?
A. To eliminate all equipment failures
B. To reduce unexpected failures and maintain reliable performance
C. To increase equipment operating voltage
D. To replace every component annually
Answer: To reduce unexpected failures and maintain reliable performance
Rationale: Preventive maintenance identifies wear, contamination, calibration
drift, and other problems before they cause equipment failure or inaccurate
laboratory results.
2. Before servicing energized laboratory equipment, what should a technician
do first?
A. Remove the equipment cover
B. Increase the power supply
C. Follow the applicable electrical safety and lockout/tagout procedures
D. Spray the equipment with disinfectant
,Answer: Follow the applicable electrical safety and lockout/tagout procedures
Rationale: Electrical hazards can cause shock, burns, or death. Proper isolation
and verification of de-energization are fundamental maintenance practices.
3. Which instrument is commonly used to measure electrical resistance?
A. Oscilloscope
B. Ohmmeter
C. Tachometer
D. Manometer
Answer: Ohmmeter
Rationale: An ohmmeter measures resistance in ohms and is useful for checking
resistors, wiring continuity, coils, and other electrical components.
4. What is the main function of a centrifuge?
A. To sterilize specimens
B. To separate components based on density using centrifugal force
C. To measure specimen pH
D. To amplify electrical signals
Answer: To separate components based on density using centrifugal force
Rationale: Centrifugation separates materials such as cells, plasma, serum, and
other particles according to their density.
5. A centrifuge produces excessive vibration during operation. What should be
checked first?
A. Printer paper
B. Rotor balance and loading
C. Display brightness
D. Room lighting
Answer: Rotor balance and loading
,Rationale: Unevenly distributed tubes or an improperly seated rotor are
common causes of excessive centrifuge vibration and can create serious
mechanical hazards.
6. What device is commonly used to measure temperature during equipment
troubleshooting?
A. Thermocouple or calibrated thermometer
B. Ammeter
C. Frequency counter
D. Pressure switch
Answer: Thermocouple or calibrated thermometer
Rationale: Temperature measurements are essential when checking incubators,
refrigerators, freezers, water baths, analyzers, and other temperature-
controlled equipment.
7. What is the purpose of a laboratory equipment calibration procedure?
A. To make equipment look newer
B. To compare measurement performance against a known standard
C. To eliminate preventive maintenance
D. To increase instrument noise
Answer: To compare measurement performance against a known standard
Rationale: Calibration establishes whether an instrument's measurements are
accurate and within specified tolerances.
8. What is the function of a fuse?
A. To increase current
B. To protect an electrical circuit from excessive current
C. To regulate specimen temperature
D. To measure voltage
Answer: To protect an electrical circuit from excessive current
, Rationale: A fuse opens the circuit when current exceeds its rated value, helping
prevent damage and fire hazards.
9. A fuse repeatedly blows after replacement. What is the most appropriate
action?
A. Install a larger fuse
B. Bypass the fuse
C. Investigate the underlying electrical fault
D. Wrap the fuse with wire
Answer: Investigate the underlying electrical fault
Rationale: Repeated fuse failure indicates an unresolved fault such as a short
circuit, overload, or defective component. Installing a larger fuse can create a
dangerous condition.
10.What is the primary function of a laboratory refrigerator?
A. To incubate bacterial cultures
B. To maintain designated materials at controlled refrigerated temperatures
C. To centrifuge specimens
D. To generate compressed air
Answer: To maintain designated materials at controlled refrigerated
temperatures
Rationale: Laboratory refrigerators preserve reagents, specimens, controls, and
other temperature-sensitive materials within specified temperature ranges.
11.Why should refrigerator temperature sensors be periodically verified?
A. To improve door appearance
B. To ensure displayed or recorded temperatures accurately represent actual
conditions
C. To reduce electrical grounding
D. To increase compressor noise
Technician Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. What is the primary purpose of preventive maintenance on clinical
laboratory equipment?
A. To eliminate all equipment failures
B. To reduce unexpected failures and maintain reliable performance
C. To increase equipment operating voltage
D. To replace every component annually
Answer: To reduce unexpected failures and maintain reliable performance
Rationale: Preventive maintenance identifies wear, contamination, calibration
drift, and other problems before they cause equipment failure or inaccurate
laboratory results.
2. Before servicing energized laboratory equipment, what should a technician
do first?
A. Remove the equipment cover
B. Increase the power supply
C. Follow the applicable electrical safety and lockout/tagout procedures
D. Spray the equipment with disinfectant
,Answer: Follow the applicable electrical safety and lockout/tagout procedures
Rationale: Electrical hazards can cause shock, burns, or death. Proper isolation
and verification of de-energization are fundamental maintenance practices.
3. Which instrument is commonly used to measure electrical resistance?
A. Oscilloscope
B. Ohmmeter
C. Tachometer
D. Manometer
Answer: Ohmmeter
Rationale: An ohmmeter measures resistance in ohms and is useful for checking
resistors, wiring continuity, coils, and other electrical components.
4. What is the main function of a centrifuge?
A. To sterilize specimens
B. To separate components based on density using centrifugal force
C. To measure specimen pH
D. To amplify electrical signals
Answer: To separate components based on density using centrifugal force
Rationale: Centrifugation separates materials such as cells, plasma, serum, and
other particles according to their density.
5. A centrifuge produces excessive vibration during operation. What should be
checked first?
A. Printer paper
B. Rotor balance and loading
C. Display brightness
D. Room lighting
Answer: Rotor balance and loading
,Rationale: Unevenly distributed tubes or an improperly seated rotor are
common causes of excessive centrifuge vibration and can create serious
mechanical hazards.
6. What device is commonly used to measure temperature during equipment
troubleshooting?
A. Thermocouple or calibrated thermometer
B. Ammeter
C. Frequency counter
D. Pressure switch
Answer: Thermocouple or calibrated thermometer
Rationale: Temperature measurements are essential when checking incubators,
refrigerators, freezers, water baths, analyzers, and other temperature-
controlled equipment.
7. What is the purpose of a laboratory equipment calibration procedure?
A. To make equipment look newer
B. To compare measurement performance against a known standard
C. To eliminate preventive maintenance
D. To increase instrument noise
Answer: To compare measurement performance against a known standard
Rationale: Calibration establishes whether an instrument's measurements are
accurate and within specified tolerances.
8. What is the function of a fuse?
A. To increase current
B. To protect an electrical circuit from excessive current
C. To regulate specimen temperature
D. To measure voltage
Answer: To protect an electrical circuit from excessive current
, Rationale: A fuse opens the circuit when current exceeds its rated value, helping
prevent damage and fire hazards.
9. A fuse repeatedly blows after replacement. What is the most appropriate
action?
A. Install a larger fuse
B. Bypass the fuse
C. Investigate the underlying electrical fault
D. Wrap the fuse with wire
Answer: Investigate the underlying electrical fault
Rationale: Repeated fuse failure indicates an unresolved fault such as a short
circuit, overload, or defective component. Installing a larger fuse can create a
dangerous condition.
10.What is the primary function of a laboratory refrigerator?
A. To incubate bacterial cultures
B. To maintain designated materials at controlled refrigerated temperatures
C. To centrifuge specimens
D. To generate compressed air
Answer: To maintain designated materials at controlled refrigerated
temperatures
Rationale: Laboratory refrigerators preserve reagents, specimens, controls, and
other temperature-sensitive materials within specified temperature ranges.
11.Why should refrigerator temperature sensors be periodically verified?
A. To improve door appearance
B. To ensure displayed or recorded temperatures accurately represent actual
conditions
C. To reduce electrical grounding
D. To increase compressor noise
