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Consider the base plate of a 800-W household iron having a thickness of L _ 0.6 cm, base area of A _ 160 cm2, and thermal conductivity of k _ 20 W/m · °C. The inner surface of the base plate is subjected to uniform heat flux generated bythe resistance heaters inside. When steady operating conditions are reached, the outer surface temperature of the plate is measured to be 85°C. Disregarding any heat loss through the upper part of the iron and taking the nodal spacing to be 0.2 cm,
(a) obtain the finite difference formulation for the nodes and
(b) determine the inner surface temperature of the plate by solving those equations.
Consider a mixture of saturated liquid water and saturated steam at 2 bar and x = 0.95 that is compressed adiabatically and reversibly to 25 bar in an open system. What is the initial temperature and entropy?
water at standard atmospheric pressure and temperature fills a sealed rigid container. if the temperature of the water
Define and identify unique characteristics of the items below: Abrasive Machining, Honing, Lapping, Surface Grinding, Centerless Grinding.
A pitot probe is used to measure the pressure in a supersonic pipe ?ow (review Solved Problem 9.6). If the pressure in the pipe is 120 kPa absolute, the temperature is 30-C, and the Mach number is 2.0, what pressure is measured by the pitot probe?
two carnot heat engines are operating in series such that the heat sink of the first engine serves as the heat source
determine the maximum value of the coefficient of static friction for which the brake is not self-locking when the drum rotates counterclockwise.
a 2014-t6 aluminum spar in an airframe is expected to support an alternating load ranging between 32 kn and -32 kn at a
A multiple disc clutch employs 3 steel and 2 bronze discs having outer diameter 300 mm and inner diameter 200 mm. For a coefficient of friction of 0.22 find the axial pressure and the power transmitted at 750 r.pm if the normal until pressure is 0.13..
a four cylinder 2.4 liter engine operates on a four stroke cycle at 3200 rpm. the compression ratio is 9.41 the
Prove that if k varies linearly with T in a slab, and if heat transfer is one-dimensional and steady, then q may be evaluated precisely using k evaluated at the mean temperature in the slab.
a truck travelling along a straight road at speed 20 km/hr increases its speed to 120 hr/hr in time 15 sec.If its acceleration is constant, determine the distance traveled.
a tank is rigid and contains r134a at 800 kpa and saturated conditions with quality equal to .75. from this condition a
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