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.

Pressure and humidity instrumentsElectrical measuring devicesMedical physics toolsNavigational instruments

Physics Measuring Instruments Questions

Multiple choice

Which type of instrument is commonly used to measure the pressure of the water in a hydropower plant's penstock?

  1. Pressure transducer

  2. Flow meter

  3. Level sensor

  4. Turbine speed sensor
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pressure transducers are typically used to measure the pressure of the water in a hydropower plant's penstock, providing information about the water flow and the overall performance of the plant.

Multiple choice

Which type of sensor is typically used to measure the humidity in a hydropower plant's control room?

  1. Hygrometer

  2. Flow meter

  3. Pressure transducer

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

Hygrometers are commonly used to measure the humidity in a hydropower plant's control room, ensuring that the environment is suitable for the sensitive electronic equipment.

Multiple choice

Which of the following is NOT a common type of pest monitoring device used in art collections?

  1. Sticky traps

  2. Light traps

  3. Temperature and humidity monitors

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

Motion detectors are not typically used as pest monitoring devices in art collections.

Multiple choice

What is the Kelvin scale?

  1. A scale used to measure color temperature

  2. A scale used to measure exposure

  3. A scale used to measure focus

  4. A scale used to measure contrast
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Kelvin scale is a scale used to measure color temperature.

Multiple choice

How does a color temperature meter work?

  1. It measures the intensity of light emitted by a light source.

  2. It measures the wavelength of light emitted by a light source.

  3. It measures the frequency of light emitted by a light source.

  4. It measures the color temperature of a light source by comparing it to a known reference.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A color temperature meter works by measuring the color temperature of a light source by comparing it to a known reference. It typically uses a sensor that is sensitive to different wavelengths of light, and it calculates the color temperature based on the relative intensities of these wavelengths.

Multiple choice

What are some common types of color temperature meters?

  1. Contact color temperature meters

  2. Non-contact color temperature meters

  3. Spot color temperature meters

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are several types of color temperature meters available, including contact color temperature meters, non-contact color temperature meters, and spot color temperature meters. Contact color temperature meters are placed directly on the light source, while non-contact color temperature meters measure the color temperature from a distance. Spot color temperature meters measure the color temperature of a specific area within a scene.

Multiple choice

What are some factors that can affect the accuracy of a color temperature meter?

  1. The type of light source being measured

  2. The distance between the meter and the light source

  3. The angle at which the meter is pointed at the light source

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The accuracy of a color temperature meter can be affected by several factors, including the type of light source being measured, the distance between the meter and the light source, and the angle at which the meter is pointed at the light source.

Multiple choice

What are some limitations of using a color temperature meter?

  1. Color temperature meters can only measure the color temperature of a single light source.

  2. Color temperature meters cannot measure the color temperature of mixed light sources.

  3. Color temperature meters are not always accurate in low-light conditions.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Color temperature meters have some limitations, including the fact that they can only measure the color temperature of a single light source, they cannot measure the color temperature of mixed light sources, and they are not always accurate in low-light conditions.

Multiple choice

What is the name of the device that is used to measure the thickness of a thin film?

  1. Ellipsometer

  2. Atomic force microscope

  3. Scanning electron microscope

  4. Transmission electron microscope
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An ellipsometer is a device that is used to measure the thickness of a thin film.

Multiple choice

Which instrument is commonly used to measure the Earth's gravitational field?

  1. Gravimeter

  2. Theodolite

  3. Level

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

A gravimeter is a device used to measure the Earth's gravitational field.

Multiple choice

Which instrument is commonly used to measure horizontal angles in surveying?

  1. Theodolite

  2. Level

  3. Total station

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

A theodolite is commonly used to measure horizontal angles in surveying.

Multiple choice

Which type of surveying instrument is commonly used to measure vertical angles?

  1. Theodolite

  2. Level

  3. Total station

  4. GPS receiver
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A level is commonly used to measure vertical angles.

Multiple choice

Which type of surveying instrument is commonly used to measure distances?

  1. Theodolite

  2. Level

  3. Total station

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

A total station is commonly used to measure distances.

Multiple choice

What is the name of the test that is used to measure the function of the vestibular system?

  1. Electronystagmography

  2. Vestibular evoked myogenic potentials

  3. Caloric stimulation test

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tests that are used to measure the function of the vestibular system include electronystagmography, vestibular evoked myogenic potentials, and caloric stimulation test.

Multiple choice

What is the most common method used to measure noise levels?

  1. Sound level meter.

  2. Noise dosimeter.

  3. Audiometer.

  4. None of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A sound level meter is the most common instrument used to measure noise levels.