Physics ยท General Awareness

Physics Measuring Instruments

1,123 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 type of sensor is commonly used in medical devices to measure blood pressure?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

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

Strain gauges are commonly used in medical devices to measure blood pressure by detecting the deformation of a sensor element caused by the pressure exerted by the blood.

Multiple choice

Which of the following is a common type of sensor used in medical devices to measure respiratory rate?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

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

Piezoelectric sensors are commonly used in medical devices to measure respiratory rate by detecting the movement of the chest or abdomen during breathing.

Multiple choice

Which technology is used to measure wind speed and direction at a specific location?

  1. Anemometer

  2. Wind vane

  3. LiDAR

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

Wind speed and direction can be measured using various technologies, including anemometers, wind vanes, and LiDAR (Light Detection and Ranging). Anemometers measure wind speed, wind vanes indicate wind direction, and LiDAR provides detailed information about wind speed and direction over a larger area.

Multiple choice

Which equipment is used to measure the distance traveled by a runner in track and field events?

  1. Stopwatch

  2. Tape Measure

  3. Measuring Wheel

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

A measuring wheel is a device specifically designed to accurately measure the distance covered by runners in track and field events.

Multiple choice

Which equipment is used to measure the speed of a runner or cyclist?

  1. Stopwatch

  2. Tachometer

  3. Speedometer

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

A speedometer is a device used to measure and display the speed of a moving object, such as a runner or cyclist.

Multiple choice

What type of astronomical instrument is used to measure the spectrum of light emitted by celestial objects?

  1. Telescope

  2. Spectrograph

  3. Interferometer

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

A spectrograph is an instrument used to disperse light into its component wavelengths, allowing astronomers to study the chemical composition and physical properties of celestial objects.

Multiple choice

Which of the following is NOT a type of detector commonly used in astronomical instruments?

  1. Charge-coupled device (CCD)

  2. Photomultiplier tube (PMT)

  3. Bolometer

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

Geiger counters are not typically used in astronomical instruments as they are designed to detect ionizing radiation, which is not the primary type of radiation emitted by astronomical objects.

Multiple choice

What is the term for the measurement of blood oxygen levels?

  1. Spirometry

  2. Plethysmography

  3. Oximetry

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

Oximetry is a non-invasive method for measuring blood oxygen levels using a pulse oximeter, which is typically placed on a finger or earlobe.

Multiple choice

What is the name of the thermometer used to measure the temperature inside a tandoor?

  1. Tandoor thermometer

  2. Oven thermometer

  3. Meat thermometer

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

Tandoor thermometer is a thermometer used to measure the temperature inside a tandoor.

Multiple choice

What type of sensor is commonly used to measure the pH of a bioprocess?

  1. pH electrode

  2. Conductivity probe

  3. Dissolved oxygen probe

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

pH electrodes are specifically designed to measure the pH of a solution, providing accurate and reliable measurements of hydrogen ion concentration.

Multiple choice

Which type of sensor is commonly used to measure the dissolved oxygen (DO) concentration in a bioprocess?

  1. pH electrode

  2. Conductivity probe

  3. Dissolved oxygen probe

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

Dissolved oxygen probes are specifically designed to measure the dissolved oxygen concentration in a solution, providing accurate and reliable measurements of oxygen levels.

Multiple choice

Which type of sensor is commonly used to measure the level of liquid in a bioreactor?

  1. pH electrode

  2. Conductivity probe

  3. Dissolved oxygen probe

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

Level sensors are specifically designed to measure the level of liquid in a container or vessel, providing accurate and reliable measurements of liquid volume.

Multiple choice

Which of the following is a common method for measuring streamflow?

  1. Current Meter

  2. Float Method

  3. Acoustic Doppler Current Profiler (ADCP)

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

Current meter, float method, and Acoustic Doppler Current Profiler (ADCP) are all common methods for measuring streamflow. Current meter measures the velocity of water flow at a point, float method measures the average velocity of water flow over a section, and ADCP measures the velocity of water flow throughout a cross-section.

Multiple choice

What is the primary diagnostic technique used to measure the temperature of laboratory plasmas?

  1. Spectroscopy

  2. Interferometry

  3. Magnetic Probes

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

Spectroscopy is the primary diagnostic technique used to measure the temperature of laboratory plasmas. This involves analyzing the light emitted by the plasma, which contains information about the plasma's temperature and composition.

Multiple choice

In basketball, what device is used to measure the time remaining in a game or quarter?

  1. Shot Clock

  2. Game Clock

  3. Stopwatch

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

The game clock in basketball displays the time remaining in a quarter or the entire game.