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A refrigerator uses R134a as the working fluid. It operates with a condensing temperature of 100°F (T3) and a low temperature of -10F. The compressor uses 500W of power. For an ideal cycle Determine: assuming saturated properties out of the evaporator and condenser 1) The Coefficient of performance 2) The cooling capacity Determine: assuming 5 degrees of sub cooling from the condenser and 5 degrees of superheating from the evaporator. 1) The Coefficient of performance 2) The cooling capacity
how do you calculate the strain of a solid cantilever bending beam fixed at one end if given curvature of 0.0243 m and
the aim of this demonstration is to use measurements of the load required to propagate a crack tear in packaging tape
two solid cylinders rods AB and BC are welded together at B and loaded. determine the magnitude of the force P for which the tensile stress in rod AB is twice the magnitude of the compressive stress in rod BC?
How does artificial aging affect KIC in a 7075 alloy? Which is likely to have a higher KIC: 7075-T6 or 7075-T7? Explain.
A similar measurement is made applying the force parallel to one of the cube axes. Explain why the two measurements give different values of the elastic modulus.
Shows an electric-circuit which is called a phase-lag network. Derive the transfer function and consider the above bock-diagram of figure (3). You are now required to derive the transfer function Y(s)/R(s), by using the signal flow graph meth..
Gear A rotates with an angular velocity of 100 rpm clockwise. Knowing that the angular velocity of arm AB is 50 rpm counterclockwise, determine the corresponding angular velocity of gear B.
A wooden board AB, which is used as a temporary prop to support a small roof, exerts at point A of the roof a 57-lb force directed along BA. Determine the moment about C of that force.
Classify the sections of the components in automatic control system.
Now suppose the mean time to failure (mf) on the expose machine is 60 hours and the repair time is exponentially distributed with a mean of 2 hours (mr). What are the effective mean and CV of the process time for a job of 60 panels?
determine the smallest allowable value of the coefficient of static friction between the collar and the rod if the collar is not to slide when a) a =15° b)a = 45°. Indicate for each case the direction of the impending motion.
A centrifugal pump, weighing 600N and operating at 1000 rpm, is mounted on six springs of stiffness 6000 N/m each. Find the maximum permissible unbalance in order to limit the steady-state deflection to 5mmm peak-to-peak.
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