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

A well of cross-sectional area a_w is connected to an inclined tube of cross-sectional area a_t to form a differential pressure gauge as shown in the figure below. When p₁ = p₂ the common liquid level is denoted by A. When p₁ > p₂, the liquid level in the well is depressed to B, and the level in the tube rises by l along its length such that the difference in the tube and well levels is h_d.

The angle of inclination of the tube with the horizontal is:

The diameter of an aluminium sphere is found to be 50 mm at atmospheric pressure of 10⁵ Pa. The bulk modulus for aluminium is 68.6 GPa. The change in the diameter of the sphere in microns, when placed in a vacuum is

A pressure sensor has the following specifications. Sensitivity at the design temperature

= 10 V/MPa, Zero drift = 0.01 V/°C, Sensitivity drift = 0.01 (V/MPa)/°C When the sensor is used in an ambient 20°C above the design temperature, the output from the device is 7.4 V. The true value of the pressure will be

A piezoelectric type 50 MPa full-scale pressure sensor with built-in electronics has a sensitivity of 100 mV per MPa. If this sensor is subjected to a static pressure of 10 MPa then its output will be

A piezoelectric type pressure sensor has a sensitivity of 1 mV/kPa and bandwidth of

300 Hz to 300 kHz. For a constant (dc) pressure of 100 kPa, the steady-state output of the sensor in millivolt is

In which of the following categories is thin plate diaphragm included?

Which of the following devices convert pressure to displacement?

What is the difference between water and transformer oil as a manometric liquid?

Which of the following is detected using manometer devices?

Which of the following conversions take place in bourdon tubes?Options

Capsules are made from diaphragms.

In bellows pressure to displacement conversion takes place.