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 diagnostic technique is commonly used to measure the plasma rotation velocity?

  1. Magnetic Probe

  2. Spectroscopy

  3. Doppler Spectroscopy

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

Doppler spectroscopy can also be used to measure the plasma rotation velocity. By analyzing the Doppler shift in spectral lines due to the plasma's rotation, the velocity of the plasma can be determined.

Multiple choice

Which instrument provides pilots with information about the aircraft's attitude relative to the horizon?

  1. Airspeed Indicator

  2. Altimeter

  3. Attitude Indicator

  4. Vertical Speed Indicator
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The attitude indicator, also known as the artificial horizon, provides pilots with visual cues regarding the aircraft's orientation relative to the horizon.

Multiple choice

Which instrument provides pilots with information about the aircraft's speed relative to the surrounding air?

  1. Airspeed Indicator

  2. Altimeter

  3. Attitude Indicator

  4. Vertical Speed Indicator
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The airspeed indicator provides pilots with accurate information about the aircraft's speed relative to the surrounding air, which is crucial for maintaining safe flight conditions.

Multiple choice

What is the name of the equipment used to measure the distance in a race?

  1. Tape measure

  2. Stopwatch

  3. Finish line

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

A tape measure is used to measure the distance between the starting line and the finish line.

Multiple choice

What is the name of the astronomical instrument used to measure the altitude of celestial bodies?

  1. Astrolabe

  2. Sextant

  3. Quadrant

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

The quadrant is an astronomical instrument used to measure the altitude of celestial bodies. It is a quarter-circle divided into degrees and minutes and is used to measure the angular distance between the horizon and a celestial body.

Multiple choice

Which of the following is a device used to measure the depth of water beneath a houseboat?

  1. Depth finder

  2. Fish finder

  3. GPS

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

Depth finders are electronic devices that measure the depth of water beneath a boat, providing valuable information for navigation and fishing.

Multiple choice

Which instrument is commonly used to measure the pH of water?

  1. pH meter

  2. Spectrophotometer

  3. Gas chromatograph

  4. Atomic absorption spectrometer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A pH meter is a specialized instrument used to measure the pH of water, which indicates its acidity or alkalinity.

Multiple choice

Which of the following is NOT a common sensor used in Mechatronics?

  1. Accelerometer

  2. Gyroscope

  3. Thermistor

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

Thermistors are not typically used in Mechatronics, as they are primarily used for measuring temperature.

Multiple choice

Which of the following is NOT a common type of sensor used in Mechatronics?

  1. Strain gauge

  2. Load cell

  3. Proximity sensor

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

Tachometers are not typically used in Mechatronics, as they are primarily used for measuring speed.

Multiple choice

Which of the following is NOT a common type of sensor used in Mechatronics?

  1. Strain gauge

  2. Load cell

  3. Proximity sensor

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

Tachometers are not typically used in Mechatronics, as they are primarily used for measuring speed.

Multiple choice

What is the term for the instrument used to measure the angle between the horizon and a celestial body?

  1. Sextant

  2. Astrolabe

  3. Compass

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

The sextant is an instrument used to measure the angle between the horizon and a celestial body, which is essential for navigation.

Multiple choice

What is the term for the instrument used to determine the direction of magnetic north?

  1. Sextant

  2. Astrolabe

  3. Compass

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

The compass is an instrument used to determine the direction of magnetic north, which is essential for navigation.

Multiple choice

What is the term for the instrument used to measure the speed of a ship through water?

  1. Sextant

  2. Astrolabe

  3. Compass

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

The log line is an instrument used to measure the speed of a ship through water.

Multiple choice

Which of these is NOT a common type of mobile device sensor?

  1. Accelerometer

  2. Gyroscope

  3. Magnetometer

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

Barometers are not as common a type of mobile device sensor as accelerometers, gyroscopes, and magnetometers.

Multiple choice

What is the Saffir-Simpson Hurricane Wind Scale used for?

  1. Measuring hurricane wind speeds

  2. Predicting hurricane tracks

  3. Estimating hurricane damage

  4. Classifying hurricane intensity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Saffir-Simpson Hurricane Wind Scale is used to classify the intensity of hurricanes based on their maximum sustained wind speeds, with categories ranging from 1 to 5.