Which of the following flow-metering instruments is an areameter ?

Related Mcqs:

1. Which of the following fluid flow measuring devices can measure the largest flow rate ?

   A. V-notch
   B. Rotameter
   C. Orificemeter
   D. Weir

2. Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?

   A. Radiation/infrared pyrometer
   B. Filled system thermometer
   C. Mercury in glass thermometer
   D. Thermo electric pyrometer

3. Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the ________________?

   A. Mercury in glass thermometer
   B. Optical pyrometer
   C. Iron-constantan thermocouple
   D. Alcohol filled thermometer

4. Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?

   A. Platinum resistance thermometer
   B. Mercury in glass thermometer
   C. Vapor pressure thermometer
   D. Radiation pyrometer

5. Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a ________________?

   A. Magnetic flowmeter
   B. Pitot tube
   C. Flow nozzle type flowmeter
   D. Turbine flowmeter

6. Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A0. The model that describes the dynamic variation of temperature of water in the tank with time is given as________________?

   A. Q0(T0 – T) = Ac . h (dT/dt)
   B. Q0T0 – QT = Ac . h (dT/dt)
   C. Q(T0 – T) = Ac . h (dT/dt)
   D. Q(T0 – T) = Ac . (dTH/dt)

7. The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?

   A. d
   B. d2
   C. d3
   D. d4

8. Temperature measuring instruments are standardised mostly with _____________ points of pure substances?

   A. Melting
   B. Boiling
   C. Both A. & B.
   D. Neither A. nor B.

9. Non-metallic diaphragm used as pressure sensor in instruments is generally made of__________________?

   A. Teflon
   B. Synthetic rubber
   C. Bakelite
   D. Thick paper

10. Which of the following is not a differential pressure flow meter ?

    A. Rotameter
    B. Flow nozzle
    C. Orificemeter
    D. Venturimeter