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question a group of 25 power transistors dissipating 15 w each are to be cooled by attaching them to a black-anodized
question a plate 05 m times 05 m is inclined at an angle of 30deg the top surface of the plate is well insulated
assignment voippart 1 work breakdown structurethis assignment contains two deliverables a summary document to be
question consider a 2-m-high electric hot-water heater that has a diameter of 40 cm and maintains the hot water at
question during a plant visit it was observed that a 15-m-high and 1-m-wide section of the vertical front section of a
question an electric resistance space heater is designed such that it resembles a rectangular box 50 cm high 80 cm long
question skylights or roof windows are commonly used in homes and manufacturing facilities since they let natural light
question an electronic box that consumes 200 w of power is cooled by a fan blowing air into the box enclosure the
question repeat problem assuming the fan fails and thus the entire heat generated inside the duct must be rejected to
question exhaust gases from a manufacturing plant are being discharged through a 10-m-tall exhaust stack with outer
question consider a flat-plate solar collector placed horizontally on the flat roof of a house the collector is 15 m
question a double-door wood-framed window with glass glazing and metal spacers is being considered for an opening that
question consider an ordinary house with r-13 walls walls that have an r-value of 13 hft2degfbtu compare this to the
question consider a house in atlanta georgia that is maintained at 22degc and has a total of 14 m2 of window area the
question a 10-cm-diameter and 10-m-long cylinder with a surface temperature of 10degc is placed horizontally in air at
question in a production facility thin square plates 2m times 2m in size coming out of the oven at 270degc are cooled
question why are the windows considered in three regions when analyzing heat transfer through them name those regions
question a 150-mm-diameter and 1-m-long rod is positioned horizontally and has water flowing across its outer surface
question reconsider problem using ees or other software plot the forced motion velocity above which natural convection
question a 12-cm-high and 20-cm-wide circuit board houses 100 closely spaced logic chips on its surface each
question in an ordinary double-pane window about half of the heat transfer is by radiation describe a practical way of
assignment corrosionhow is galvanisation different from cathodic protectionexplain the mechanism of rusting of iron on
question consider a double-pane window whose air space width is 20 mm now a thin polyester film is used to divide the
question consider a double-pane window whose air space is flashed and filled with argon gas how will replacing the air
question consider a 5-m-long vertical plate at 60degc in water at 25degc determine the forced motion velocity above