Biomedical Engineering > GATE 2022 > Flow Measurement
A Hall effect flow meter is used to measure the volumetric flow through a blood vessel. The flow meter induces a magnetic field across the vessel and uses a voltmeter to measure the voltage across the vessel which is normal to both magnetic field and blood flow. A caliper is used to measure the vessel diameter. The system calculated the flow rate to be 100 cm³.s⁻¹ using the known magnetic field, and measured values of voltage and vessel diameter.
After the measurement, a calibration is performed, and it is discovered that the voltmeter was measuring 40% larger than the actual value and the caliper was measuring the diameter 10% smaller than the actual value.
Assuming a uniform flow profile along the vessel and ignoring viscosity, the actual blood flow is _______ cm³.s⁻¹ (rounded off to two decimal places).

Correct : 78.71 to 79.91

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