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Worksheetstest metrology
Total questions: 80
Worksheet time: 40mins
What is the main objective of metrology?
To standardize units of measurement
To create new measuring devices
To study the accuracy and precision of measurements
To eliminate all measurement error
What is a gross error in measurement?
A systematic error that is significant
A minor error that can be ignored
An error due to environmental factors
A random error significantly higher than expected
Absolute error is measured by
in named units
in relative units
in per cent
dimensionless
Which type of measuring device processes signals in a form suitable for perception?
Receiver
Transmitter
Measuring Transducer
Measuring Device
Which method involves the direct observation and estimation by an observer?
Zero Method
Opposition Method
Indirect Measurement
Direct Measurement
Which measurement method uses the difference between two values for accuracy?
Differential Method
Direct Measurement
Zero Method
Indirect Measurement
What is the purpose of using the opposition method in measurement?
To decrease random errors
To calibrate instruments
To eliminate systematic errors
To increase measurement speed
Which type of error can be eliminated by correcting at the end of the measurement?
Random Error
Systematic Error
Gross Error
Subjective Error
Which type of error can be eliminated by the opposition method?
Subjective Error
Systematic Error
Random Error
Gross Error
Which method in metrology involves using accurate and stable elements to stabilize static characteristics?
Repeated Measurements
Multi-channel Measurements
Structural Methods
Parametric Stabilization
Which type of error is caused by the imperfection of a measurement method?
Instrumental Error
Methodical Error
Installation Error
Theoretical Error
What is the evaluation of the dispersion of observations calculated by?
Mean Square Deviation
Arithmetic Mean
Sum of Squares
Standard Deviation
What does the term 'Qualimetry' refer to?
Calibration of instruments
Measurement of quality
Measurement of mass
Standardization of units
Which term refers to the characteristics of properties of Measuring Instruments (MI) that influence measurement results?
Precision
Tolerance
Metrological Characteristics
Calibration
What is the significance of normal conditions in metrology?
They provide a reference for measurement standards
They help in calibrating instruments
They eliminate all errors
They are used to ignore environmental factors
What is the purpose of structural methods in increasing the accuracy of MI?
To eliminate random errors
To stabilize static characteristics of MI
To use multiple repeated measurements
To include additional components to improve accuracy
What type of error is caused by individual characteristics of an observer?
Subjective Error
Random Error
Systematic Error
Gross Error
Which term refers to the characteristics of properties of Measuring Instruments (MI) that influence measurement results?
Tolerance
Metrological Characteristics
Calibration
Precision
Which term refers to the characteristics of properties of Measuring Instruments (MI) that influence measurement results?
Tolerance
Metrological Characteristics
Calibration
Precision
What type of error is characterized by its random nature and cannot be predicted?
Systematic Error
Installation Error
Random Error
Gross Error
The ratio of the absolute error to the upper limit of a given measuring instrument is called the error...
Reduced
Absolute
Random
Relative
Which error is known and can be corrected at the end of the measurement?
Systematic Error
Gross Error
Random Error
Subjective Error
Which method is used to eliminate systematic errors before starting measurements?
Structural Methods
Multi-channel Measurements
Elimination Method
Parametric Stabilization
Which error is caused by incorrect installation of measuring instruments?
Installation Error
Methodical Error
Instrumental Error
Influence Value Error
What is a zero method in measurement?
Method using zero calibration
Method ignoring errors
Method where the difference between measured and reproduced values is adjusted to zero
Method with zero error
Which of the following represents the total number of observations in statistical analysis?
Deviation
Mean Value
Sample Size (n)
Variance
Which term is used to describe a device that converts one form of energy to another in measurement?
Receiver
Amplifier
Transmitter
Transducer
What is the principle of the opposition method in measurement?
To average multiple readings
To use digital instrumentation
To compare measurement with a standard
To use two opposing measurements to cancel errors
Which error is due to unpredictable changes during measurement?
Gross Error
Systematic Error
Random Error
Bias Error
What does the term "accuracy" refer to in measurements?
The range within which a measurement falls
The capability of an instrument to detect small variations
The closeness of a measured value to a standard or known value
The consistency of repeated measurements
Which type of error is primarily reduced by increasing the number of measurements?
Gross Error
Instrumental Error
Random Error
Systematic Error
What is meant by the term "calibration"?
Adjusting instruments for accurate measurements
Checking the precision of a measurement
Recording measurement data
Comparing measurement outputs with a standard
Which method uses the least square principle to minimize errors?
Opposition Method
Differential Method
Least Squares Method
Zero Method
What is the purpose of using normal conditions in measurement?
To ensure consistency across measurements
To reduce the need for repeated measurements
To eliminate the need for calibration
To allow for environmental variable adjustments
What is the normal distribution law also known as?
Gaussian Distribution
Poisson Distribution
Exponential Distribution
Binomial Distribution
What does the term "precision" refer to in measurements?
The closeness of a measured value to a standard or known value
The range of measurements an instrument can take
The repeatability of measurements under unchanged conditions
The sensitivity of an instrument to detect changes
What does the term "dispersion" describe in statistical analysis?
The spread of values in a data set
The frequency distribution of data
The central tendency of a data set
The average value of observations
Which type of measuring instrument displays results directly to the observer?
Analog Instrument
Display Device
Digital Instrument
Output Device
Which quality characteristic is often assessed using a control chart?
Durability
Accuracy
Reliability
Precision
What does the symbol 'μ' commonly represent in statistics?
Sample Mean
Standard Deviation
Population Mean
Variance
What is the term for a measure that combines several quality indicators into one value?
Aggregate Value
Complex Indicator
Composite Measure
Single Indicator
The measurement of the resistance of a resistor using an exemplary resistance measure refers to
indirect measurements;
direct measurements;
cumulative measurements
joint measurements;
Which method ensures the accuracy of measurement by considering environmental variables?
Structural Methods
Parametric Stabilization
Normalization
Calibration
Which error arises from the inherent limitations of a measuring instrument?
Gross Error
Instrumental Error
Systematic Error
Random Error
What does the term 'standard deviation' measure in a data set?
The number of observations
The central tendency
The highest and lowest values
The average deviation from the mean
The science of measurements, methods and means of ensuring their uniformity and ways of achieving the required accuracy is called.....
the State System for Ensuring Uniformity of Measurements
Metrology
Standardisation.
Qualimetry
Which of the following is an example of a secondary quality indicator?
Primary Indicator
Tertiary Indicator
Derived Indicator
Subordinate Indicator
The deviation of measurement results from the true (actual) value of the measured quantity is called:
correctness of measurements;
accuracy of measurements;
convergence of measurements.
measurement error;
Which type of error is addressed by recalibrating the measuring device?
Random Error
Installation Error
Gross Error
Systematic Error
What does the term "repeatability" refer to in the context of measurements?
The ability to produce the same measurement results under unchanged conditions
The closeness of the measurement to the true value
The range within which repeated measurements fall
The ability to measure small variations accurately
Which law describes the probability distribution of random errors?
Normal Distribution Law
Exponential Law
Binomial Law
Uniform Law
Which method involves the use of multiple measuring devices simultaneously to improve accuracy?
Zero Method
Multi-channel Measurements
Structural Methods
Differential Methods
What does the term 'calibration curve' refer to?
The graphical representation of the instrument's output against known standards
The error margin of the instrument
The accuracy level of the instrument
The curve that shows the range of instrument measurements
The metrological characteristics of measuring instruments do not include...
division price
accuracy
quality
sensitivity
Which of the following errors is least likely to be detected during calibration?
Gross Error
Random Error
Installation Error
Systematic Error
What is the purpose of dispersion analysis in quality management?
To determine the cause of variations
To measure the frequency distribution
To analyze the spread of data values
To identify the central tendency of data
What does the term 'σ' represent in measurement?
Mean Square Deviation
Systematic Error
Gross Error
Calibration Constant
Which quality indicator is typically represented by a ratio or percentage?
Absolute Indicator
Single Indicator
Complex Indicator
Relative Indicator
The primary standard is the standard that ..
ensuring constancy of the size of the unit of physical quantity in time
manufactured for the first time in the world
reproducing the unit of physical quantity with the highest accuracy
manufactured for the first time in the country
Which measurement method involves measuring a known value and comparing it with the instrument reading?
Zero Method
Calibration Method
Opposition Method
Comparison Method
Which of the following is a method to ensure the accuracy of measurements by using stable components?
Multi-channel Measurements
Structural Methods
Repeat Measurements
Parametric Stabilization
What type of error can result from the observer's individual characteristics and judgment?
Systematic Error
Gross Error
Random Error
Subjective Error
What does the term 'precision' signify in a set of measurements?
Closeness to the true value
Range of measurements
Sensitivity of the instrument
Reproducibility of measurements
Metrological services of legal entities are created for...
fulfilment of works on ensuring the uniformity of measurements at their enterprises.
quality control of products manufactured by the enterprise
implementation of the quality system at the enterprise
control of conformity of the enterprise's products to mandatory requirements of standards
What type of error is introduced by environmental factors affecting measurement?
Instrumental Error
Random Error
Environmental Error
Methodical Error
Which method is used to calculate the most likely value in the presence of random errors?
Median
Least Squares Method
Mode
Arithmetic Mean
What does the term 'traceability' refer to in metrology?
The range of measurement values
The ability to reproduce measurements accurately
The precision of the measurement
The capability to trace measurement results to a standard
Which method is used to eliminate systematic errors before starting measurements?
Structural Methods
Elimination Method
Parametric Stabilization
Multi-channel Measurements
What is the significance of confidence intervals in statistical analysis?
They assess the reliability of an estimate
They indicate the precision of a measurement
They provide the range of possible values
They measure the central tendency
Which type of measurement involves direct comparison with a standard?
Direct Measurement
Differential Measurement
Opposition Measurement
Indirect Measurement
What does the term 'tolerance' refer to in quality control?
The range of measurement values
The precision of the measurement
The exact value of measurement
The allowable deviation from a standard value
Which method involves adjusting the instrument to zero before measurement?
Differential Method
Calibration Method
Opposition Method
Zero Method
Which quality indicator is used to evaluate the performance of a process over time?
Relative Indicator
Process Capability Indicator
Temporal Indicator
Absolute Indicator
How many readings on the scale of an exemplary device should be performed when verifying an electromechanical device?
on all digitised divisions of the scale of the device being verified
ten
by all digitised divisions of the scale of the reference instrument
five
What is the significance of 'confidence level' in statistical analysis?
It indicates the spread of data values
It represents the precision of a measurement
It shows the reliability of an estimate
It measures the central tendency
Which measurement method uses the difference between two measurements to find the desired value?
Calibration Method
Comparison Method
Zero Method
Differential Method
What does the term 'resolution' refer to in the context of measuring instruments?
The accuracy of the instrument
The maximum range of measurement
The precision of the instrument
The smallest change in a measured variable that an instrument can detect
Which type of measurement involves comparing the measurement with a known standard?
Opposition Measurement
Differential Measurement
Indirect Measurement
Direct Measurement
What is the definition of a transducer in metrology?
A device that produces a signal for further processing
An instrument that displays measurements
A calibration tool
A recording device
The instability of instrument readings, i.e. the algebraic difference between the highest and lowest measurement results of repeated measurements of the same quantity under unchanged conditions is called:
range of measurement.
variation of readings;
sensitivity of the instrument;
range of readings;
