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A pipe of negligible thickness has a hot fluid flowing inside it. It has a diameter of 0.6 m and a surface temperature of 165oC. It is in direct contact with air whose temperature is -18oC during the winter time. The air moves perpendicular to the steam pipe in cross flow with a free stream velocity of 5 m/s. Compute the heat loss per one meter of pipe length. Now, if the pipe is insulated with foam whose thermal conductivity is 0.04 W/(m K), compute the heat loss per unit length of pipe if the insulating layer has a thickness of 30mm.
The roof is supported by cables. If the cables exert FAB = 100N and FAC = 120N on the wall hook at A, determine the magnitude of the resultant force acting at A.
a construction crew lifts about 560 lb of material serveral times during the day from a flatbed truck to a 32 foot
1. air is compressed by a 30 kw compressor from p1 to p2. the air temperature is maintained constant at 25 oc
a new cast iron pipe is 5 km long and 15 mm diameter is used to convey water at a rate of 0.0150m3s-1. given the
a fireworks shell is launched vertically from point a with speed sufficient to reach a maximum altitude of 500 ft. a
one litter of iodine vapour at 0.04 atm pressure and 150c is isothermally compressed. a. determine the nature of the
an irregularly shaped object weighs 100 lb in air and 64 lb when fully submerged in water. determine the volume and
Derive the operational transfer function and the sinusoidal transfer function for an RC high-pass filter. Plot the step response and the complete frequency response (magnitude and phase).
a flat steel plate is 1 m long and 1 m wide. air flows over the plate at 10 ms. the plates leave a heat treatment oven
Find the corresponding damping coefficient c. Identify the system parameters such as the natural frequency and damped frequency. Derive the mathematical expression of the displacement as a function of time with the given initial condition. Plot yo..
steam enters an adiabatic turbine steadily at 8 mpa and 500 c through an inlet with cross-section area of 0.041767 m2
two tanks a and b are connected by a short section of pipe with a valve that is initially closed. both tanks are
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