#1
Which instrument is used to measure temperature?
Thermometer
ExplanationA device designed to measure temperature accurately.
#2
What does the abbreviation 'mm' stand for in measurement?
Millimeter
ExplanationMillimeter is a unit of length in the metric system, equal to one thousandth of a meter.
#3
What is the primary purpose of calibration?
To ensure that measurements are accurate and reliable
ExplanationCalibration is essential for maintaining the accuracy and reliability of measurement instruments.
#4
Which of the following is a common unit for measuring electrical resistance?
Ohm
ExplanationOhm (Ω) is the unit of electrical resistance.
#5
Which instrument is commonly used to measure the pH of a solution?
pH Meter
ExplanationA pH meter is specifically designed to measure the acidity or alkalinity of a solution.
#6
Which of the following is a primary standard in calibration?
Water
ExplanationWater is often used as a primary standard in calibration due to its known properties and accessibility.
#7
What does the term 'zero error' mean in calibration?
An error that occurs in the instrument's reading when it should read zero
ExplanationZero error refers to the discrepancy in the instrument's reading when it should ideally read zero.
#8
Which of the following is NOT a common unit of pressure measurement?
Newton (N)
ExplanationNewton (N) is a unit of force, not pressure.
#9
What is the term used to describe the smallest increment of a measuring instrument?
Resolution
ExplanationResolution refers to the smallest increment of measurement that an instrument can detect.
#10
What is the process of adjusting an instrument to accurately measure known values called?
Calibration
ExplanationCalibration involves adjusting an instrument to ensure accurate measurement of known values.
#11
What is the purpose of a calibration certificate?
To certify that the instrument meets specified accuracy standards
ExplanationA calibration certificate verifies that an instrument meets predetermined accuracy standards.
#12
What does the term 'traceability' mean in calibration?
The ability to track the history, application, or location of an item through recorded identification
ExplanationTraceability ensures that the history, usage, and location of an item can be accurately determined through documented identification.
#13
Which of the following is NOT a method of calibration?
Alienation method
ExplanationAlienation method is not a recognized calibration technique.
#14
What is the term used to describe the difference between a measurement and its true value?
Uncertainty
ExplanationUncertainty represents the deviation between a measurement and its true value.
#15
Which of the following organizations is responsible for establishing international standards for measurements?
ISO
ExplanationISO (International Organization for Standardization) sets international standards for measurements.