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.

Pressure and humidity instrumentsElectrical measuring devicesMedical physics toolsNavigational instruments

Physics Measuring Instruments Questions

Multiple choice

What is the primary function of a barometer?

  1. To measure wind speed

  2. To measure air temperature

  3. To measure atmospheric pressure

  4. To measure humidity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A barometer is a device used to measure atmospheric pressure.

Multiple choice

Which instrument is used to measure wind direction?

  1. Anemometer

  2. Windsock

  3. Barometer

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

A windsock is a conical-shaped fabric sleeve that is used to indicate wind direction.

Multiple choice

Which instrument is used to measure humidity?

  1. Anemometer

  2. Windsock

  3. Barometer

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

A hygrometer is a device used to measure humidity.

Multiple choice

What is the principle behind the operation of a rain gauge?

  1. The collection of raindrops in a graduated cylinder

  2. The measurement of the electrical conductivity of rainwater

  3. The measurement of the weight of raindrops

  4. The measurement of the volume of raindrops
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A rain gauge operates by collecting raindrops in a graduated cylinder.

Multiple choice

Which instrument is used to measure wind speed?

  1. Anemometer

  2. Windsock

  3. Barometer

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

An anemometer is a device used to measure wind speed.

Multiple choice

Which instrument is used to measure solar radiation?

  1. Pyranometer

  2. Sunshine recorder

  3. Albedo meter

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

A pyranometer is a device used to measure solar radiation.

Multiple choice

Which instrument is used to measure precipitation?

  1. Rain gauge

  2. Snow gauge

  3. Tipping bucket rain gauge

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

A rain gauge is a device used to measure precipitation.

Multiple choice

Which instrument is used to measure atmospheric pressure?

  1. Barometer

  2. Anemometer

  3. Hygrometer

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

A barometer is a device used to measure atmospheric pressure.

Multiple choice

Which instrument is used to measure the amount of water vapor in the air?

  1. Anemometer

  2. Windsock

  3. Barometer

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

A hygrometer is a device used to measure the amount of water vapor in the air.

Multiple choice

What is the Pitot tube?

  1. A device used to measure the pressure of a fluid

  2. A device used to measure the velocity of a fluid

  3. A device used to measure the flow rate of a fluid

  4. A device used to measure the temperature of a fluid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Pitot tube is a device used to measure the velocity of a fluid. It consists of a tube that is pointed upstream into the flow. The pressure inside the tube is measured and used to calculate the velocity of the fluid.

Multiple choice

What is the Venturi meter?

  1. A device used to measure the pressure of a fluid

  2. A device used to measure the velocity of a fluid

  3. A device used to measure the flow rate of a fluid

  4. A device used to measure the temperature of a fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Venturi meter is a device used to measure the flow rate of a fluid. It consists of a section of pipe that is constricted in the middle. The pressure drop across the constriction is measured and used to calculate the flow rate of the fluid.

Multiple choice

What is the orifice plate?

  1. A device used to measure the pressure of a fluid

  2. A device used to measure the velocity of a fluid

  3. A device used to measure the flow rate of a fluid

  4. A device used to measure the temperature of a fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The orifice plate is a device used to measure the flow rate of a fluid. It consists of a plate with a hole in the middle. The pressure drop across the plate is measured and used to calculate the flow rate of the fluid.

Multiple choice

What is the rotameter?

  1. A device used to measure the pressure of a fluid

  2. A device used to measure the velocity of a fluid

  3. A device used to measure the flow rate of a fluid

  4. A device used to measure the temperature of a fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The rotameter is a device used to measure the flow rate of a fluid. It consists of a vertical tube with a float inside. The float is lifted by the flow of the fluid, and the position of the float is used to indicate the flow rate.

Multiple choice

What is the ultrasonic flow meter?

  1. A device used to measure the pressure of a fluid

  2. A device used to measure the velocity of a fluid

  3. A device used to measure the flow rate of a fluid

  4. A device used to measure the temperature of a fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ultrasonic flow meter is a device used to measure the flow rate of a fluid. It consists of a pair of transducers that are mounted on the outside of a pipe. The transducers emit ultrasonic waves into the fluid, and the waves are reflected back to the transducers. The difference in the time it takes for the waves to travel upstream and downstream is used to calculate the flow rate of the fluid.

Multiple choice

What is a photometer?

  1. A device used to measure the brightness of stars and galaxies.

  2. A device used to measure the distance to stars and galaxies.

  3. A device used to measure the temperature of stars and galaxies.

  4. A device used to measure the mass of stars and galaxies.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photometers are used to measure the intensity of light from celestial objects.