Please anybody answer this ASAP,i need the answer in 40 min Air flows isentropically through a channel To = 310 ° C. The two ends have identical areas, namely A = 25 cm², pressure p1 = 160 kPa and p2 = 65 kPa Determine a). Mass flow rate, b). Throat area and C). Ma2

For the below low-speed wind tunnel (Fig. 1), Settling chamber (reservoir) V₁ PI Nozzle V₂ P2. A2 Test section Diffuser Figure 2: Low-Speed Wind Tunnel P3 A3 A) Derive a mathematical expression to determine the flow velocity at the test section? B) At the sea level conditions, calculate the velocity at the test section when A1/A2=10 and the pressure difference is 4.9 kPa? C) What is a critical Reynolds number on an airfoil? D) If the airfoil has a critical Reynolds number of 550,000, how far aft of the airfoil's leading edge will transition occur?

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5) A piece of machinery is enclosed in a sound-dampening cabinet, but you are concerned that the noise level is still too high for nearby workers. You make a measurement of absolute pressure exerted by the sound wave 1 ft outside the (closed) cabinet and find that the sound coming from it is 4.8 Pa. a) What is the sound pressure level at the location where you took the measurement? (i.e., 1 ft from the cabinet). b) You have been asked to draw a circle around the machinery cabinet to indicate the boundary beyond which hearing protection is not required. How far from the machinery must you be to be below the OSHA PEL of 90 dB (provide radius in ft)? c) If a worker spends 3 hrs working near the cabinet, what would their total dose be? Assume: 1) an 8-hr shift, 2) the average distance from the cabinet during the exposed portion of the shift is 1 ft (the same distance as the measurement), and 3) that the other 5 hrs had 0 exposure to noise. d) Should hearing protection be required? If so,…

A wind turbine gives the following data: Blade length= 55.5 m. Wind speed = 11 m/s Air density = 1.227 Kg/m3 Power coefficient = 0.55 Assuming equal efficiencies for gearbox and generator, If the Power output from wind turbine, P is 2.1 MW, then find a) Rotor Power Output, P- in M (* b) Wind Power, Pw in MW (: C) Efficiency of Generator Rotor Power Output, Pr in MW

At T= 300 °C and atmospheric pressure, determine the speed of sound if the fluid: a). nitrogen b). hydrogen c). helium d). Water vapor

The rate of flow of water through a horizontal pipe is 200+last two digits of your id lit/s. Thearea of the pipe suddenly enlarges from 300 cm2to 1200 cm2. The pressure intensity in thesmaller pipe is 10+last digit of your id N/cm2. Determine:a) Loss of head due to sudden enlargementb) Pressure intensity in the larger pipec) Power lost due to enlargement    Explain with clear writing and units and diagram Also if you use tables and equation mention it with explanation

constant velocity of 3 m/s?[ Note: Neglect the pressure force effects] DA 7.6 cm jet of water strikes a vertical plate in its centroid. Find the velocity of water through the jet if a horizontal force of 44.5 N is applied to: 1) hold the platte stationary. 2) move the plate to the right by a a nir

Water flows smoothly through a pipe with various circular cross-sections of diameters 2D, 6D, and D`, respectively. a.) What is the ratio of the speed in section 3 to the speed in section 1?  V3/V1=  b.)  In which section is the pressure largest? Choose the best answer.  a.) They are the same b.) Section 1 c.) Section 2 d.) Section 3

A well-insulated nozzle has an entrance area of 0.28 m2 and an exit area of 0.157 of m2. Air enters at a velocity of 65 m/s and leaves at 274 m/s. The exit pressure is 101 kPa and the exit temperature is 12°C. a)What is the inlet temperature? b)What is the exit density? c)What is the inlet density? d)What is the inlet Pressure? A V₁=65m $ 0. be P₁ = 101 kPa T₂ = 12°C m V₂=274™ 19 bobivan S