Physics ยท General Awareness

Physics Measuring Instruments

1,180 Questions

Physics measuring instruments are essential tools used to measure various physical quantities. This topic covers devices like hygrometers, oscilloscopes, and sphygmomanometers. It is a highly scoring section in general science and general awareness examinations.

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Physics Measuring Instruments Questions

Multiple choice

Which of the following tools is used to measure the thickness of a board?

  1. Calipers

  2. Micrometer

  3. Ruler

  4. Combination square
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Calipers are commonly used to measure the thickness of a board accurately.

Multiple choice

Which of the following tools is used to measure the diameter of a dowel?

  1. Calipers

  2. Micrometer

  3. Ruler

  4. Combination square
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Calipers are commonly used to measure the diameter of a dowel accurately.

Multiple choice

Which of the following tools is used to measure the depth of a hole?

  1. Calipers

  2. Micrometer

  3. Depth gauge

  4. Combination square
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A depth gauge is a specialized tool used to measure the depth of a hole or recess.

Multiple choice

In the context of modern technology, which physical principle is utilized in accelerometers to measure acceleration?

  1. Piezoelectricity

  2. Diffraction

  3. Refraction

  4. Polarization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Piezoelectricity is the principle used in accelerometers to measure acceleration by converting mechanical stress into an electrical signal.

Multiple choice

Which instrument is commonly used to measure surface air temperature?

  1. Thermometer

  2. Barometer

  3. Anemometer

  4. Rain gauge
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A thermometer is used to measure the temperature of the air, typically placed in a shaded area to avoid direct sunlight.

Multiple choice

Which instrument is used to measure wind speed and direction?

  1. Thermometer

  2. Barometer

  3. Anemometer

  4. Rain gauge
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An anemometer is used to measure wind speed and direction, typically consisting of cups or propellers that rotate in response to the wind.

Multiple choice

Which instrument is used to measure atmospheric pressure?

  1. Thermometer

  2. Barometer

  3. Anemometer

  4. Rain gauge
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A barometer is used to measure atmospheric pressure, which is the weight of the air above a given point.

Multiple choice

Which type of hydraulic structure is used to measure the flow rate of water in a river or channel?

  1. Weir

  2. Flume

  3. Orifice

  4. Venturi meter
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Weirs, flumes, orifices, and Venturi meters are all types of hydraulic structures used to measure the flow rate of water in a river or channel, each with its own specific design and application.

Multiple choice

What is the primary role of observation in physics?

  1. To confirm or refute theories

  2. To generate new theories

  3. To collect data

  4. To communicate scientific findings
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary role of observation in physics is to confirm or refute theories. Observations are used to test the predictions of theories and to determine whether or not they are accurate.

Multiple choice

What is the name of the device used to measure the speed of a tennis serve?

  1. Radar gun

  2. Speed gun

  3. Serve meter

  4. Velocity meter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A serve meter is a device used to measure the speed of a tennis serve.

Multiple choice

Which of the following is NOT a common type of geotechnical instrument used for monitoring soil and rock behavior?

  1. Piezometers

  2. Inclinometers

  3. Extensometers

  4. Thermocouples
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Thermocouples are primarily used for measuring temperature, while piezometers, inclinometers, and extensometers are commonly used for monitoring soil and rock behavior in geotechnical engineering.

Multiple choice

Extensometers are commonly used to measure:

  1. Lateral movement of structures.

  2. Settlement of structures.

  3. Pore water pressure in soil or rock.

  4. Strain in soil or rock.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Extensometers are installed in soil or rock to measure strain, which provides information about the deformation and stress distribution within the geotechnical structure.

Multiple choice

Which of the following is NOT a common type of geotechnical monitoring system used for tunnel construction?

  1. Convergence meters

  2. Inclinometers

  3. Piezometers

  4. Extensometers
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Piezometers are primarily used for measuring pore water pressure, while convergence meters, inclinometers, and extensometers are commonly used for monitoring tunnel construction in geotechnical engineering.

Multiple choice

Which of the following is NOT a method for measuring streamflow?

  1. Current meter

  2. Float method

  3. Acoustic Doppler current profiler

  4. Evaporation pan
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An evaporation pan is used to measure evaporation, not streamflow. The other methods, such as current meter, float method, and acoustic Doppler current profiler, are all used to measure streamflow.

Multiple choice

What is the name of the technology that uses sensors to measure the tension of a tennis string?

  1. String Tension Measurement System

  2. Racquet String Tension Meter

  3. String Gauge Measurement System

  4. Racquet String Tension Tester
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

String Tension Measurement System uses sensors to measure the tension of a tennis string.