ASQ CCT Certified Calibration Technician

How many base SI units are defined in the International System of Units?

• AFive
• BSix
• CSeven
• DEight

Which SI base unit is used to measure thermodynamic temperature?

• ACelsius
• BKelvin
• CJoule
• DCandela

What is the SI derived unit for electrical resistance?

• AAmpere
• BVolt
• COhm
• DSiemens

A calibration laboratory measures a voltage of 0.005 V. How is this value expressed using SI multipliers?

• A5 mV
• B5 μV
• C5 kV
• D0.5 cV

Which fundamental constant defines the speed of light in a vacuum?

• APlanck's constant (h)
• BAvogadro constant (NA)
• CSpeed of light (c)
• DBoltzmann constant (kB)

In the SI hierarchy of measurement standards, which type of standard is maintained by national metrology institutes such as NIST?

• AWorking standard
• BTransfer standard
• CPrimary standard
• DReference standard

A technician needs to calibrate a precision torque wrench but the preferred torque reference standard is unavailable. Which concept governs whether a different standard can be used?

• AGage R&R
• BSubstitution of standards
• CInterlaboratory comparison
• DMeasurement assurance program

Convert 2.5 kilometers to meters.

• A25 m
• B250 m
• C2,500 m
• D25,000 m

Traceability in metrology means that a measurement result can be related to a stated reference through:

• AA single calibration certificate issued by any laboratory
• BAn unbroken chain of comparisons with stated uncertainties
• CRegular proficiency testing with at least five laboratories
• DManufacturer specification sheets for the instrument

What is the SI derived unit for pressure?

• ANewton
• BPascal
• CJoule
• DWatt

A calibration technician uses a direct measurement method to determine the diameter of a precision shaft. What characterizes direct measurement?

• AThe measurand is compared to a known artifact and the difference is recorded
• BThe quantity is measured without reference to another quantity of the same kind
• CThe measurement is performed using a ratio of two independent instruments
• DThe instrument output is inferred from a different physical quantity

Which measurement characteristic describes how closely repeated measurements of the same measurand under unchanged conditions agree with each other?

• AReproducibility
• BBias
• CRepeatability
• DLinearity

In measurement data analysis, resolution refers to:

• AThe range of values over which an instrument can operate safely
• BThe smallest change in a quantity that an instrument can detect and indicate
• CThe degree to which repeated readings agree under the same conditions
• DThe maximum allowable deviation from the true value

A technician notices that a pressure gauge consistently reads 2 psi higher than the reference standard across its full operating range. This systematic deviation is best described as:

• ARandom error
• BRepeatability error
• CBias
• DResolution error

What does 'percent of full scale' mean as an instrument specification term?

• AThe error is expressed as a percentage of the actual reading at any point
• BThe error is a fixed percentage of the maximum value of the instrument's range
• CThe instrument accuracy improves proportionally as the reading decreases
• DThe tolerance is calculated based on the number of display counts

A Gage R&R study is performed on a torque measurement system. The study reveals that 35% of total variation is due to the measurement system. What action is MOST appropriate?

• AAccept the measurement system as adequate because the gage variation is below 50%
• BInvestigate and reduce measurement system variation before using the gage for critical de…
• CReplace the reference standard with a higher-accuracy unit
• DIncrease the number of parts measured to dilute the measurement system variation

Which of the following BEST describes 'drift' as an error source in calibration?

• AA sudden shift in instrument output caused by mechanical shock
• BA slow, gradual change in instrument output over time under constant conditions
• CVariation in readings caused by changes in ambient temperature
• DInconsistent readings caused by different technicians using the instrument

The measurement assurance program (MAP) concept of an interlaboratory comparison involves:

• AOne lab recalibrating all its instruments against a single primary standard
• BMultiple laboratories measuring the same artifact and comparing results
• CA laboratory auditor reviewing calibration records for completeness
• DCalculating the expanded uncertainty for a single measurement process

A calibration procedure document must include which of the following elements?

• AEmployee performance records for the assigned technician
• BRequired equipment, environmental considerations, and common procedures
• CCustomer billing rates for the calibration service
• DHistorical pass rates for previous calibrations of the instrument type

During calibration, the process of adjusting an instrument to eliminate offset error at a single reference point is called:

• ASpanning
• BLinearization
• CZeroing
• DNulling

ISO/IEC 17025 is the international standard for:

• AQuality management systems for manufacturing organizations
• BGeneral requirements for the competence of testing and calibration laboratories
• CCalibration interval determination for measuring instruments
• DMeasurement uncertainty evaluation in test laboratories

Electrostatic discharge (ESD) is an environmental concern in calibration laboratories primarily because:

• AIt causes temperature fluctuations that shift instrument calibration points
• BIt can damage sensitive electronic components in measuring instruments
• CIt affects the humidity levels required by ISO/IEC 17025
• DIt degrades optical measurement surfaces over time

A calibration laboratory operates under ISO/IEC 17025. Which type of document represents the final deliverable issued to a customer after completing a calibration?

• ANonconformance report
• BCalibration label
• CCalibration certificate
• DUncertainty budget

In a calibration management system, what does 'equipment identification' refer to in the context of IM&TE logistical information?

• AThe uncertainty class assigned to the instrument during calibration
• BThe unique marking or tagging system that tracks each instrument through its lifecycle
• CThe manufacturer's specification sheet attached to the calibration record
• DThe environmental conditions at the time of calibration

When scheduling IM&TE calibration, a technician must consider 'overdue lists.' What is the primary risk of having instruments appear on an overdue calibration list?

• AThe instruments will automatically fail during the next scheduled use
• BMeasurements made with the instrument since its last calibration may be of unknown validi…
• CThe calibration laboratory will lose its ISO 9001 certification
• DThe instrument must be destroyed and replaced per regulatory requirements

Which term describes the ratio of the measurement uncertainty of the reference standard to the tolerance of the unit under test?

• ATest Accuracy Ratio (TAR)
• BCoverage factor (k)
• CGuard band
• DExpanded uncertainty

The Test Uncertainty Ratio (TUR) differs from the Test Accuracy Ratio (TAR) primarily because:

• ATUR uses the full expanded uncertainty of the measurement process, not just the reference…
• BTUR is always larger than TAR for the same calibration
• CTUR applies only to electrical calibrations, while TAR applies to dimensional calibrations
• DTUR is determined by the customer, while TAR is determined by the calibration laboratory

In uncertainty analysis, Type A evaluation of uncertainty is based on:

• AManufacturer's specifications and calibration certificates
• BStatistical analysis of repeated measurement observations
• CEngineering judgment and prior knowledge of the measurement
• DEnvironmental parameters specified in international standards

A calibration laboratory reports measurement uncertainty as U = 0.05 mm at a 95% confidence level with k = 2. What is the standard uncertainty?

• A0.10 mm
• B0.05 mm
• C0.025 mm
• D0.005 mm

When combining multiple independent uncertainty components to form a combined standard uncertainty, the correct mathematical operation is:

• ASum all individual standard uncertainties directly
• BMultiply all individual standard uncertainties together
• CCalculate the square root of the sum of squares (root sum square) of all components
• DAverage all individual standard uncertainties

Guard-banding in calibration decision-making is used to:

• AIncrease the number of calibration points across the instrument's range
• BReduce the risk of falsely accepting an out-of-tolerance instrument
• CEliminate the need to calculate measurement uncertainty
• DExtend the calibration interval when instruments are performing well

In uncertainty analysis, a rectangular (uniform) distribution is typically assigned to which type of uncertainty component?

• ARandom variation from repeated measurements
• BResolution of a digital display
• CMeasurement variation across multiple operators
• DEnvironmental temperature fluctuations measured over one week

Express 0.0000045 in scientific notation.

• A4.5 × 10⁻⁵
• B4.5 × 10⁻⁶
• C45 × 10⁻⁷
• D0.45 × 10⁻⁵

Convert 1,500 grams to kilograms.

• A0.15 kg
• B1.5 kg
• C15 kg
• D150 kg

A calibration result shows a measured value of 10.003 V against a nominal value of 10.000 V. Rounding this result to four significant figures gives:

• A10.00 V
• B10.003 V
• C10.0 V
• D10 V

What is the value of (3 + 4 × 2) ÷ (5 − 3)?

• A3.5
• B5.5
• C7
• D11

A calibration report states a measurement result as 25.4°C ± 0.3°C (k=2, 95% confidence). The '± 0.3°C' value is called the:

• AStandard uncertainty
• BType B uncertainty
• CExpanded uncertainty
• DCoverage interval