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Part of an automatic flow-metering system is shown. The main flow goes through a smooth venturi that reduces the area from Am to Av and in which we may assume that all dynamic pressure is fully recovered. The spring-mounted pistons deflect due to the pressure in the main pipe and at the throat. Orifices in the pipes connecting the piston chambers to the main pipe restrict the flows to the pistons to low values. Construct a bond graph for this subsystem, and indicate inertia elements and Bernoulli resistors for the two area change sections of length l. Why should we expect the two pistons to deflect differing amounts? Would the difference between the two deflections serve to measure the main flow?
a pipe transports water in a 4-cm-diameter pipe with an average velocity of 10 ms. the pipe undergoes a 90 degree bend
a pitot-static tube is used to measure the velocity of 20 degrees c 68f water flowing in an open channel. if a
One component in a household refrigerator is the compressor where refrigerant 12 enters as saturated vapor at -24?F and is isentropic ally compressed to 29 psia. Determine the work required in kJ/kg and the exit temperature (in °C) of the refrigeran..
Refrigerant 134a at a flow rate of 0.5 lb/s enters a heat exchanger in a refrigeration system operating at steady state as saturated liquid at 20 degrees Fahrenheit at a pressure of 20lbf/in^2. A separate air stream passes in counter flow to the refr..
H2O at 350oF, 60 psi enters an insulated nozzle at 10 ft/s. It leaves at 1440 ft/s and 35 psi. What is the isentropic efficiency?
The member has a square cross section and is subjected to a resultant internal bending moment of M = 850 Nm as shown. Determine the stress at each corner and sketch the stress distribution produced by M. Set theta = 30 (dimensions 250mm by 250 mm)
air is compressed in a piston-cylinder device from 100 kpa and 17 c to 800 kp reversible adiabatic process. determine
Consider a concentric pipe with inner radius of Rin and outer radius of Rout. The flow is laminar and in the direction of the axis of the pipes. Obtain the velocity profile for this geometry, u(r); and also expressions for the maximum velocity, the m..
The uniform 6-kg slender rod rests on the top center of the 3kg block. If the coefficients of static friction at the points of contact are ua=.4 and ub=.6, and uc=.3, determine the largest couple moment M which can be applied to the rod without ca..
A causal discrete-time LTI system is described by y [n] - fr [n - 1] + i y [n - 2] = x [n] where x [n] and y [n] are the input and output of the system, respectively.
a small bucket of water is swinging above a persons head at a constant angular speed of 10rads. the rope is 1 m long
Save Your Professor's Life EGE 2013, Prof. J. Kerns Spring 2016. At this point, you have determined the specifications for load factors, bolt strengths, and the strength of the strut. Also, you calculated distribution of the lift as a function of p..
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