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.

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Physics Measuring Instruments Questions

Multiple choice

Which medical device is commonly used to monitor a patient's respiratory rate and oxygen levels?

  1. Pulse oximeter

  2. Electrocardiograph (ECG) Machine

  3. Nebulizer

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

A spirometer is a medical device used to measure a patient's lung function, including respiratory rate and oxygen levels.

Multiple choice

Which medical device is commonly used to measure a patient's blood glucose levels?

  1. Pulse oximeter

  2. Electrocardiograph (ECG) Machine

  3. Glucometer

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

A glucometer is a medical device used to measure a patient's blood glucose levels.

Multiple choice

What is the name of the instrument that is used to measure the depth of the sea?

  1. Echo sounder

  2. Side-scan sonar

  3. Multibeam sonar

  4. Sub bottom profiler
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An echo sounder is an instrument that is used to measure the depth of the sea. It works by sending out a sound wave and measuring the time it takes for the sound wave to bounce off the seafloor and return to the instrument.

Multiple choice

What is the name of the instrument that is used to create images of the seafloor?

  1. Echo sounder

  2. Side-scan sonar

  3. Multibeam sonar

  4. Sub bottom profiler
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A side-scan sonar is an instrument that is used to create images of the seafloor. It works by sending out a sound wave and measuring the time it takes for the sound wave to bounce off the seafloor and return to the instrument.

Multiple choice

What is the name of the instrument that is used to create three-dimensional images of the seafloor?

  1. Echo sounder

  2. Side-scan sonar

  3. Multibeam sonar

  4. Sub bottom profiler
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A multibeam sonar is an instrument that is used to create three-dimensional images of the seafloor. It works by sending out a fan-shaped beam of sound waves and measuring the time it takes for the sound waves to bounce off the seafloor and return to the instrument.

Multiple choice

What is the name of the instrument that is used to study the layers of sediment beneath the seafloor?

  1. Echo sounder

  2. Side-scan sonar

  3. Multibeam sonar

  4. Sub bottom profiler
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A sub bottom profiler is an instrument that is used to study the layers of sediment beneath the seafloor. It works by sending out a sound wave and measuring the time it takes for the sound wave to bounce off the different layers of sediment and return to the instrument.

Multiple choice

Which of the following is NOT a common type of ceramic sensor?

  1. Thermistor

  2. Piezoelectric sensor

  3. Pyroelectric sensor

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

Thermistors are not ceramic sensors. They are semiconductor devices whose resistance changes with temperature.

Multiple choice

Which type of ceramic sensor is commonly used to measure temperature?

  1. Thermistor

  2. Piezoelectric sensor

  3. Pyroelectric sensor

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

Thermistors are ceramic sensors whose resistance changes with temperature, making them suitable for temperature measurement.

Multiple choice

Which underwater acoustic technique is used to measure the depth of water?

  1. Echo Sounding

  2. Side-scan Sonar

  3. Multibeam Sonar

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

Echo sounding is a method that utilizes sound waves to determine the depth of water by measuring the time it takes for a sound pulse to travel to the seabed and back.

Multiple choice

What is the unit used to measure noise levels?

  1. Decibels (dB)

  2. Hertz (Hz)

  3. Pascals (Pa)

  4. Watts (W)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Noise levels are typically measured in decibels (dB), which represent the relative loudness of a sound compared to a reference level.

Multiple choice

Which instrument is commonly used to measure the water level in a hydropower reservoir?

  1. Pressure transducer

  2. Flow meter

  3. Level sensor

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

Level sensors, such as ultrasonic or float-based sensors, are typically used to measure the water level in a hydropower reservoir.

Multiple choice

Which type of flow meter is commonly used to measure the flow rate of water in a hydropower plant?

  1. Venturi meter

  2. Orifice plate

  3. Magnetic flow meter

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

Venturi meters are commonly used to measure the flow rate of water in hydropower plants due to their accuracy and reliability.

Multiple choice

Which type of sensor is typically used to measure the vibration of a hydropower turbine?

  1. Accelerometer

  2. Strain gauge

  3. Temperature sensor

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

Accelerometers are commonly used to measure the vibration of hydropower turbines, providing valuable information for condition monitoring and fault detection.

Multiple choice

Which type of instrument is commonly used to measure the temperature of a hydropower turbine bearing?

  1. Thermocouple

  2. Resistance temperature detector (RTD)

  3. Infrared thermometer

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

Resistance temperature detectors (RTDs) are often used to measure the temperature of hydropower turbine bearings due to their accuracy and reliability.

Multiple choice

Which type of sensor is typically used to detect leaks in a hydropower plant's water pipes?

  1. Acoustic leak detector

  2. Flow meter

  3. Pressure transducer

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

Acoustic leak detectors are commonly used to detect leaks in hydropower plant's water pipes by identifying the sound generated by the escaping water.