PYQs Based Test - 08 : Sensors and Industrial Instrumentation

A piezoelectric pressure sensor has a bandpass characteristic with cut-off frequency of 0.1 Hz and 1 MHz, and a sensitivity of 100 mV/kPa. The sensor is subjected to a static constant pressure of 100 kPa. Its steady-state output will be

A pitot-static tube is used to estimate the velocity of an incompressible fluid of density 1 kg/m³. If the pressure difference measured by the tube is 200 N/m², the velocity of the fluid, assuming the pitot-tube coefficient to be 1.0 is _________ m/s.

The magnetic flux density of an electromagnetic flowmeter is 100 mWb/m². The electrodes are wall-mounted inside the pipe having a diameter of 0.25 m. A voltage of 1 V is generated when a conducing fluid is passed through the flowmeter. The volumetric flowrate of the fluid in m³/s is _________.

A mass-spring damper system with force as input and displacement of the mass as output has a transfer function

$G\left(s\right)=\frac{1}{\left(s^2+24s+900\right)}$

A force input F(t) = 10 sin (70 t) newtons is applied at time t = 0 s. A beam from an optical stroboscope is focused on the mass. In steady state, the strobe frequency in hertz at which the mass appears to be stationary is

The pressure drop across an orifice plate for a particular flow rate is 5 kg/m². If the flow rate is doubled (within the operating range of the orifice), the corresponding pressure drop in kg/m² is