#1
Which of the following instruments is commonly used to measure temperature in mechanical engineering?
Vernier caliper
Micrometer
Thermocouple
Manometer
#2
What does the term 'calibration' refer to in mechanical engineering?
Measuring the accuracy of an instrument
Adjusting an instrument to match a standard
Determining the precision of a measurement
Measuring the sensitivity of an instrument
#3
Which of the following instruments is used to measure the hardness of materials?
Tachometer
Dynamometer
Durometer
Hydrometer
#4
In mechanical engineering, what does the term 'zero error' refer to?
Error caused by incorrect calibration
Error caused by the instrument's display showing zero
Error in measurement when the instrument reading is not zero when it should be
Error due to environmental factors affecting the instrument
#5
What is the purpose of a micrometer screw gauge in mechanical engineering?
To measure small linear distances with high precision
To measure pressure variations
To measure temperature gradients
To measure angles accurately
#6
What is the SI unit of pressure?
Pascal (Pa)
Newton (N)
Joule (J)
Watt (W)
#7
Which of the following statements best describes 'tolerance' in mechanical engineering?
The maximum acceptable deviation from a specified dimension
The average of multiple measurements
The minimum acceptable deviation from a specified dimension
The standard deviation of a set of measurements
#8
What is the principle behind the operation of a strain gauge?
Piezoelectric effect
Thermoelectric effect
Capacitive sensing
Resistance change proportional to strain
#9
What does the acronym 'NIST' stand for in the context of calibration standards?
National Institute of Standards and Testing
National Institute of Standards and Technology
National Institute of Standards and Techniques
National Institute of Science and Testing
#10
What does the acronym 'ISO' stand for in the context of calibration standards?
Institute of Standards Organization
International Standards Organization
Industrial Standards Organization
Innovation Standards Organization
#11
What is the primary purpose of a dial indicator in mechanical engineering?
To measure angles
To measure pressure
To measure small linear distances
To measure temperature
#12
Which of the following instruments is typically used to measure the surface roughness of a component?
Spectrometer
Tensiometer
Sclerometer
Profilometer
#13
What is the primary purpose of a dynamometer in mechanical engineering?
To measure angular velocity
To measure torque and power
To measure linear displacement
To measure pressure
#14
What is the primary purpose of a profilometer in mechanical engineering?
To measure temperature
To measure surface roughness
To measure pressure
To measure volume
#15
What is the primary purpose of a vernier scale in mechanical engineering?
To measure small linear distances with high precision
To measure pressure variations
To measure temperature gradients
To measure angles accurately