Test: Measurement of Flow - Electronics and Communication Engineering (ECE) MCQ

Match the following :

A differential pressure transmitter is used to measure the flow rate in a pipe. Due to aging, the sensitivity of the pressure transmitter is reduced by 5%. All other aspects of the flow meter remaining constant; change in the sensitivity of the flow measurement is

The accompanying figure shows a VERTICAL venturi meter with upward water flow. When the measured static pressure difference, p₁ – p₂, between the inlet and the throat is 30 kPa, the flow rate is found to be 50 liters per second. Assume that the coefficient of discharge remains the same.

When p₁ – p₂ = 20 kPa, the flow rate, in litres per second, is

In a rotameter, used for measuring the flow rate of a fluid, Pa: pressure above the float, Pb: pressure below the float, A: area of float, V: volume of the float, d₁: density of float material, d₂: density of the fluid, g: acceleration due to gravity. The following equation describes the equilibrium of the float.

The velocity of water flow (density 1000 kg/m3) in a horizontal pipe is measured using the PITOT tube shown below. The fluid in the U-tube manometer is mercury with a density of 13534 kg/m³. Assume g = 9.81 m/s². If the height difference (h) is measured as 94.1 mm, the velocity of flow of water in m/s is

If all particle of fluid has a path parallel to the wall, it is known as ____________

Which of the following represents the Reynolds number for laminar flow?

Which instrument measures velocity at a point of the fluid in a stream?

Which of the following represents obstruction type flow measuring systems?

Which of the following represents the correct relation between flow rate and pipe area?

Which of the following converts flow to rotational motion?

Centrifugal force elements are used for ___________