Before a rotameter can beused to measure an unknown flow rate, a calibration curve of flow rate versus rotameter reading must be prepared. The following calibration curve data has been collected for a specific rotameter: Rotameter reading Collection time (min) Volume collected (cm3) 1 297 2 1 301 4 1 454 4 1 448 0.5 300 6. 0.5 298 8. 0.5 371 8 0.5 377 10 0.5 440 10 0.5 453 Assuming the liquid is water at 25 C, draw a calibration curve of mass flow rate versus rotameter reading, and use it to estimate the mass flow rate of a water stream for which the rotameter reading is 5.3.

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10. Air flows over a plate at a particular velocity from left to right. The velocity and boundary layer thickness can be expressed by the following two expressions. Зу 1 у. 2 8 U 28 4.64x %3D VRex where x is the distance measured from the left end of the plate, y is the height above the plate, & is the boundary layer thickness, U. is the free stream velocity and Rex is Reynolds number at a distance x from left end. Calculate the shear stress at x = 1 m, taking the free stream velocity of air to be 2 m s-1, the kinematic viscosity of air to be 1.5 x 10-5 m2 s1 and density of air to be 1.23 kg m-3

A. yield stress B. ultimate tensile stress C. fracture stress D. elastic deformation region E. plastic deformation region

Q1 a) The Coriolis flowmeter is primarily used to measure the mass flow rate of liquids, although it has also been successfully used in some gas-flow measurement applications. Present the operation principle Coriolis flowmeter. 0 120 240 0.5 1 0 0.42 0.99 0 A pressure sensor is used to measure the absolute pressure in a pipe. A calibration record table is given below. Determine the accuracy and the linearity best fit straight line of the sensor. The true output of the system has a linear relationship with the input. The expected output are 0 V at 0 kPa pressure and 4 mV at 960 kPa pressure. Input (kPa) Output increasing mV Output decreasing mV 360 480 600 720 840 960 1.49 1.9 2.46 2.85 3.5 4 1.5 1.96 2.49 2.68 3.6 4.1