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 of the following is NOT a method for measuring eustasy?

  1. Tide gauges

  2. Satellite altimetry

  3. Gravity measurements

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

Seismic tomography is not a method for measuring eustasy.

Multiple choice

What is the most important piece of equipment for scuba diving?

  1. Buoyancy Compensator Device (BCD)

  2. Diving Mask

  3. Flippers

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

The air tank is the most important piece of equipment for scuba diving as it provides the diver with the necessary air to breathe underwater.

Multiple choice

Which of the following is a primary flow measurement device?

  1. Venturi meter

  2. Orifice plate

  3. Pitot tube

  4. Magnetic flow meter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A Venturi meter is a primary flow measurement device that uses the principle of conservation of energy to measure the flow rate of a fluid.

Multiple choice

Which of the following is a non-intrusive flow measurement technique?

  1. Ultrasonic flow meter

  2. Laser Doppler velocimetry

  3. Hot-wire anemometer

  4. Turbine flow meter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ultrasonic flow meters are non-intrusive flow measurement devices that use ultrasonic waves to measure the flow rate of a fluid.

Multiple choice

Which of the following is a type of positive displacement flow meter?

  1. Gear flow meter

  2. Paddlewheel flow meter

  3. Turbine flow meter

  4. Vortex shedding flow meter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gear flow meters are positive displacement flow meters that use a pair of gears to measure the flow rate of a fluid.

Multiple choice

Which of the following is a type of inferential flow meter?

  1. Venturi meter

  2. Orifice plate

  3. Pitot tube

  4. Vortex shedding flow meter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vortex shedding flow meters are inferential flow meters that use the principle of vortex shedding to measure the flow rate of a fluid.

Multiple choice

Which of the following is a type of velocity flow meter?

  1. Venturi meter

  2. Orifice plate

  3. Pitot tube

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

Pitot tubes are velocity flow meters that use the principle of Bernoulli's equation to measure the flow rate of a fluid.

Multiple choice

Which of the following is a type of area flow meter?

  1. Venturi meter

  2. Orifice plate

  3. Pitot tube

  4. Magnetic flow meter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Venturi meters are area flow meters that use the principle of conservation of energy to measure the flow rate of a fluid.

Multiple choice

Which of the following is a type of mass flow meter?

  1. Venturi meter

  2. Orifice plate

  3. Pitot tube

  4. Coriolis flow meter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coriolis flow meters are mass flow meters that use the principle of Coriolis force to measure the flow rate of a fluid.

Multiple choice

What is the principle of operation of a vortex shedding flow meter?

  1. Conservation of mass

  2. Conservation of energy

  3. Faraday's law of induction

  4. Bernoulli's principle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vortex shedding flow meters operate on the principle of Bernoulli's equation, which states that the pressure of a fluid decreases as its velocity increases.

Multiple choice

Which of the following is a type of electromagnetic flow meter?

  1. Venturi meter

  2. Orifice plate

  3. Pitot tube

  4. Magnetic flow meter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Magnetic flow meters are electromagnetic flow meters that use the principle of Faraday's law of induction to measure the flow rate of a fluid.

Multiple choice

What are the main components of a ship's instrumentation and control system?

  1. Sensors

  2. Controllers

  3. Actuators

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

A ship's instrumentation and control system consists of sensors, controllers, and actuators. Sensors collect data about the ship's environment and operating conditions, controllers process this data and make decisions, and actuators carry out the controller's decisions.

Multiple choice

What are the different types of sensors used in shipboard instrumentation and control systems?

  1. Temperature sensors

  2. Pressure sensors

  3. Flow sensors

  4. Level sensors

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Shipboard instrumentation and control systems use a variety of sensors to collect data about the ship's environment and operating conditions. These sensors include temperature sensors, pressure sensors, flow sensors, level sensors, and more.

Multiple choice

What are the different types of controllers used in shipboard instrumentation and control systems?

  1. PID controllers

  2. Fuzzy logic controllers

  3. Neural network controllers

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

Shipboard instrumentation and control systems use a variety of controllers to process data from sensors and make decisions. These controllers include PID controllers, fuzzy logic controllers, neural network controllers, and more.

Multiple choice

Which instrument is commonly used to measure horizontal angles in Mine Surveying?

  1. Theodolite

  2. Level

  3. Total Station

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

Theodolite is a precise instrument used to measure horizontal and vertical angles, making it essential for angle measurements in Mine Surveying.