Description : Which of the following instrument can be used for measuring speed of a submarine moving in deep sea? (A) Venturimeter (B) Orifice plate (C) Hot wire anemometer (D) Pitot tube
Last Answer : Answer: Option D
Description : Which of the following is used for very accurate measurement of flow of gas at low velocity? (A) Pitot tube (B) Rotameter (C) Segmental orificemeter (D) Hot wire anemometer
Last Answer : (D) Hot wire anemometer
Description : Which of the following instrument can be used for measuring speed of an aeroplane? (A) Venturimeter (B) Orifice plate (C) Pitot tube (D) Rotameter
Last Answer : Answer: Option C
Description : Open channel liquid flow is most conveniently measured by a (A) Hot wire anemometer (B) Notch (C) Rotameter (D) Segmental orifice
Last Answer : (B) Notch
Description : Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an (A) Pitot tube (B) Venturimeter (C) Orificemeter (D) Rotameter
Last Answer : (A) Pitot tube
Description : Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a (A) Pitot tube (B) Manometer (C) Rotameter (D) None of these
Description : Flow of water in a pipe about 3 metres in diameter can be measured by (A) Orifice plate (B) Venturimeter (C) Rotameter (D) Pitot tube
Description : Air velocity in ducts can be measured by using and manometer a) Orifice meter b) Borden gauge c) Pitot tube d) Anemometer
Last Answer : Pitot tube
Description : Which of the following may be termed as a variable orifice flow-meter? (A) Rotameter (B) Pitot tube (C) V-notch (D) All (A), (B) and (C)
Last Answer : (A) Rotameter
Description : Which is not a variable head meter? (A) Venturimeter (B) Pitot tube (C) Rotameter (D) None of these
Last Answer : (C) Rotameter
Description : The pressure head of a flow meter remains constant for (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Pitot tube
Description : Which of the following can be used for the direct measurement of volumetric flow rate of slurry? (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Pitot tube
Description : In a/an __________, the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure. (A) Rotameter (B) Pitot tube (C) Venturimeter (D) Flow nozzle
Last Answer : (B) Pitot tube
Description : Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an (A) Weir (B) Hot wire anemometer (C) Cup and vane anemometer (D) None of these
Last Answer : (B) Hot wire anemometer
Description : Which type of flow is measured by hot wire anemometer and describe its working principle with suitable diagram.
Last Answer : Heat transfer flowmeters this type of flowmeter measures the rise in temperature of the fluid after a known amount of heat has been added to it. Its theory is based upon the specific heat equation ... a supply so as to maintain the wire temperature constant, when the amount of heat transfer varies
Description : Which of the following flow measuring devices is an area meter? (A) Venturimeter (B) Orificemeter (C) Anemometer (D) Rotameter
Last Answer : (D) Rotameter
Description : Small pressure differences in liquids is measured using a/an (A) U-tube manometer (B) Inclined tube manometer (C) Pitot tube (D) None of these
Last Answer : (B) Inclined tube manometer
Description : If you are required to monitor the speed of a device with a stroboscope over an extended period of time, what step should be taken to prolong the life of the flasher tube?
Last Answer : Monitor a submultiple frequency to prolong the flasher-tube life.
Description : In hot wire anemometer used for gas flow measurement, the wire is normally made of (A) Copper (B) Platinum (C) Constantan (D) Chromium
Last Answer : (B) Platinum
Description : The resistance wire used in a hot wire anemometer for conducting electrical current is made of (A) Copper (B) Tungsten (C) Chromium (D) Aluminium
Last Answer : (B) Tungsten
Description : Hot wire anemometer is used to measure the (A) Velocity of liquids (B) Temperature of liquids (C) Velocity of gases (D) Pressure of liquids
Last Answer : (C) Velocity of gases
Description : Hot wire anemometer is used to measure (A) Pressure in gases (B) Liquid discharge (C) Pressure in liquids (D) Gas velocities
Description : Explain working of 'hot wire anemometer with the help of diagram.
Last Answer : Diagram : Working: The hot-wire anemometer is a fine resistance wire heated by a current passing through it. If a cooler fluid flows past the wire, heat is removed from it by the ... and responsive to high-frequency change in flow rate. One of its main application is aerodynamic research.
Description : the fluid flow rate increases, the float of the Rotameter (A) Rises in the tube (B) Rotates at higher speed (C) Rotates at lower speed (D) Drops down in the tube
Last Answer : Option A
Description : The pitot static tube does not measure the __________ pressure. (A) Static (B) Total (C) Difference in static & dynamic (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Speed of wind is measured by – (1) barometer (2) hygrometer (3) thermometer (4) anemometer
Last Answer : (4) anemometer Explanation: An anemometer is a device for measuring wind speed, and is a common weather station instrument. The term is derived from the Greek word anemos, meaning wind, ... aerodynamics. The first known description of an anemometer was given by Leon Battista Alberti around 1450.
Description : Speed of wind is measured by (1) barometer (2) hygrometer (3) thermometer (4)anemometer
Last Answer : anemometer
Description : __________ is used for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline. (A) Venturimeter (B) Pressure gauge (C) Pitot tube (D) Orificemeter
Last Answer : (C) Pitot tube
Description : The simple Pitot tube measures the __________ pressure. (A) static (B) Dynamic (C) Total (D) None of these
Last Answer : (C) Total
Description : The simple Pitot tube does not measure the (A) Static pressure (B) Dynamic pressure (C) Velocity at the stagnation point (D) All (A), (B) and (C)
Description : Bernoulli’s equation does not apply to the functioning of a/an (A) Venturimeter (B) Orificemeter (C) pitot tube (D) None of these
Last Answer : (D) None of these
Description : The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a (A) Weir (B) Pitot tube (C) Kennison nozzle (D) V-notch
Description : The Prandtl Pitot tube measures the (A) Velocity at a point in the flow (B) Pressure at a point (C) Average flow velocity (D) Pressure difference in pipe flow
Last Answer : (A) Velocity at a point in the flow
Description : A Pitot tube indicates 5 cm of water (manometer) when it is being used for measuring velocity of air. The velocity of air in m/sec is (A) 5 (B) 14.1 (C) 56.22 (D) 28.2
Last Answer : (D) 28.2
Description : Non-contact speed measurements can be carried out by a) Tachometer b) Stroboscope c) Oscilloscope d) Speedometer
Last Answer : Stroboscope
Description : Non contact speed measurements can be carried out bb c) Tachometer c) Stroboscope d) Stroboscope d) Speedometer
Description : Non contact speed measurements can be carried out bb a) Tachometer c) Stroboscope b) Stroboscope d) Speedometer
Description : The best instrument for measuring the velocity of a stream flow is (A) Pitot tube (B) Price's current meter (C) Surface float (D) Sub-surface float
Last Answer : Answer: Option B
Description : Bernoulli's equation is applied to (A) Venturimeter (B) Orifice meter (C) Pitot tube (D) All of these
Description : Pitot tube is used for measurement of (A) Pressure (B) Flow (C) Velocity (D) Discharge
Description : Which of the following statement is wrong? (A) A flow whose streamline is represented by a curve is called two dimensional flow. (B) The total energy of a liquid particle is the sum of potential energy, ... (D) A pitot tube is used to measure the velocity of flow at the required point in a pipe.
Description : A pitot tube is used to measure the (A) Velocity of flow at the required point in a pipe (B) Pressure difference between two points in a pipe (C) Total pressure of liquid flowing in a pipe (D) Discharge through a pipe
Last Answer : Answer: Option A
Description : What instrument is used to measure atmospheric pressure? A. Pitot tube B. Wind vane C. Barometer D. Manometer
Last Answer : Barometer
Description : Which of the following is NOT an instrument used to measure pressure? A. Bourdon tube B. Pitot tube C. Aneroid D. Manometer
Description : Explain the working of a Pitot tube.
Last Answer : The pitot tube measures the velocity at point in the conduct. If quantity rate measurement is desired, it must be calculated from the ratio of average velocity to the velocity at the point of measurement. ... will be a measure of the impact pressure and therefore of the velocity of the stream oil.
Description : Electric current is measured by (1) Voltmeter (2) Anemometer (3) Commutator (4) Ammeter
Last Answer : (4) Ammeter
Description : Electric current is measured using which of the following instrument ? (1) Ammeter (2) Voltmeter (3) Anemometer (4) Wattmeter
Last Answer : Ammeter
Description : How deep does a submarine have to dive to no longer feel the effects of a storm?
Last Answer : Below the wave base there is no movement of the water and the wave base is half the wavelength of the surface waves. There is no exact relationship between wave height and wavelength and so a wave height of ... a wavelength of 570 feet and so the storm would be felt down to a depth of 285 feet.
Description : Vane anemometer (A) Is an area meter (B) Is a variable head meter (C) Rotates an element at a speed determined by the velocity of the fluid inwhich the meter is immersed (D) None of these
Last Answer : (C) Rotates an element at a speed determined by the velocity of the fluid inwhich the meter is immersed
Description : . A Rotameter works on the principle of __________ pressure drop. (A) Constant (B) Variable (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (A) Constant