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The outer surface of a vertical tube, which is 1 m long and has an outer diameter of 80 mm, is exposed to saturated steam at atmospheric pressure and is maintained at 50°C by the flow of cool water through the tube. What is the rate of heat transfer to the coolant, and what is the rate at which steam is condensed at the surface?
five kg of a material is heated at constant volume from a state where its internal energy is 40 mjkg to a state where
If heat engines efficiency can be increased by increasing the highest temperature why do we not increase the temperature further for our power plants? What could be done still to raise the temperature of the high temperature reservoir? What could be ..
a 500 mw electric station utilizes a rankine cycle power plant with superheat. the steam temperature and pressure at
A horizontal platform rests on four vertical springs, each of stiffness 15kN/m and mass 0.25kg. what will the frequency of oscillation of the table be if it has a mass of 2.okg
the acceleration of a particle is defined as a25-3x2 a is expressed in msec2 and x is in meters. the particle starts
two of the three velocity components for an incompressible flow are u x2 2xz vy22 yz what is the general form of the
the mass flow rate of water in a tube is measured using a beaker to catch water during a timed interval. the nominal
a 10-lb block b rests as shown on a 20-lb bracket a. the coefficients of friction are us0.3 and uk0.25 between block b
design a container using differentiation that has a volume of 2500 litres. it must use the minimum amount of material.
an electric circuit consists of a 12-v storage battery a 10 ohm resistor and an electric motor connected in parallel.
a vessel contains 4 kg of wet steam liquid-vapor mixture at 140 degc. after the addition of heat the steam has a
For plain carbon steel and convection (h=50 W/m^2 K) to air at 500K, Ti=300k, with a slab geometry 0.2 m thick (2L), find Boat Number. For a Fourier number (based on l=0.1m) of 0.1, is the tearm series valid? Find the time
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