Question 1. In SONAR, we use?
(A) Infrasonic waves
(B) Ultrasonic waves
(C) Audible sound waves
(D) Radio waves
Question 2. The apparatus used to measure intensity of sound is ______.
(A) Audiometer
(B) Audiophone
(C) Anemeter
(D) Chronometer
Question 3. Which one of the following instrument is used for locating submerged objects in an ocean?
(A) SONAR
(B) Sextant
(C) Galvanometer
(D) Audiometer
Question 4. SONAR is mostly used by ________.
(A) Navigators
(B) Engineers
(C) Doctors
(D) Astronauts
Question 5. Which of the following is measured by ‘Anemometer’?
(A) Intensity of light
(B) Force of the wind
(C) Depth of water
(D) Velocity of water-flow
Question 6. The velocity of wind is measured by ________.
(A) Wind Vane
(B) Hydrometer
(C) Anemometer
(D) Barometer
Question 7. Which one of the following is not correctly matched?
(A) Pyrometer – High temp
(B) Tachometer – Pressure difference
(C) Ammeter – Electric current
(D) Anemometer – Wind speed
Question 8. Pyrometer is used to measure?
(A) Density
(B) High temperature
(C) Humidity
(D) Air pressure
Question 9. Which one of the following devices is used to measure extremely high temperature?
(A) Pycnometer
(B) Phonometer
(C) Photometer
(D) Pyrometer
Question 10. Which one of the following thermometers is known as pyrometer?
(A) Liquid thermometers
(B) Gas thermometers
(C) Radiation thermometers
(D) Thermo-electric thermometers
Question 11. Which of the following is correctly matched?
(A) Junction Diode – Amplifier
(B) Bipolar Junction Transistor – Rectifier
(C) Capacitor – Thermometer
(D) Thermoresistor – Electronic Thermometer
Question 12. Hygrometer is used to measure?
(A) Velocity of wind
(B) High temperature
(C) Atmospheric pressure
(D) Humidity in atmosphere
Question 13. Which instrument is used for measuring humidity in the air?
(A) Eudiometer
(B) Spectrometer
(C) Hygrometer
(D) Hydrometer
Question 14. The density of milk can be obtained by the use of?
(A) Thermometer
(B) Lactometer
(C) Butyrometer
(D) Hydrometer
Question 15. The liquid/liquids used in the simple barometer is/are?
(A) Mercury
(B) Water
(C) Alcohol
(D) All of these
Question 16. Which instrument is used to measure atmospheric pressure?
(A) Hygrometer
(B) Manometer
(C) Barometer
(D) Hydrometer
Question 17. Which one of the following pair is not correctly matched?
(A) Ammeter – Measuring instrument for electric power
(B) Audiometer – Device for measuring sound intensity
(C) Ondometer – Measuring instrument for frequency of electromagnetic waves
(D) Odometer – Measuring instrument for distance covered by motor wheels
Question 18. What is measured by manometer?
(A) Pressure of oil on the surface
(B) Density of liquids
(C) Pressure of gas
(D) Air pressure
Question 19. The thermometer which used to measure 2000ºC temperature is?
(A) Steam pressure thermometer
(B) Total radiation pyrometer
(C) Mercury thermometer
(D) Gas thermometer
Question 20. ‘Pyrheliometer’ is used for measuring?
(A) Temperature of plants
(B) Air temperature
(C) Solar radiation
(D) Sun spots