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In an experiment, the temperature of a hot gas stream is to be measured by a thermocouple with a spherical junction. Due to the nature of this experiment, the response time of the thermocouple to register 99% of the initial temperature difference must be within 5s. The properties of the thermocouple jinction are k=35 w/m.k, p=8500 kg/m^3, and cp = 320 J/kg.k. If the heat transfer coefficient between the thermocouple junction and the gas is 250 w/m^2.K, determine the diameter of the junction.
a 500w cylindrical resistance heater is 1m long and 0.5cm in diameter. the resistance wire is placed horizontally in
steam enters an adiabatic turbine at 10 mpa and 500 0c and leaves at 10 kpa with quality of 90 . neglecting the changes
If the petrol engine used in this experiment at a full throttle setting (throttle valve fully open) consumes 20ml of fuel in 2 mins and 15 sec, what is the mass flow rate of fuel? How much power has been input to the system?
a contact feedwater heater operates on the principle of mixing steam and water. steam enters the heater at 100 psia and
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 absolute roughness of the pipe is 0.26 mm, density of water is 998 kg/m3 and dynamic viscosity of water is 1.14 × 10-3 kgm 1s-1.
an airplane wing modeled as a spring-mass system with natural frequency 40 hz is driven harmonically by the rotation of
Lawn mower engines normally have finned surfaces directly attached to the engine block, with no radiator, in order to achieve the required cooling. Why might the cooling strategies be different in these two applications?
A paddle wheel and an electric heater operate in a system. If the torque is 200 N-m, the rotational speed is 400 rpm, the voltage is 20 V, and the amperage is 10 A, What is the rate of doing work?
determine the size of the contact patch and the maximum contact stresses for a 40-mm-dia steel cylinder 25 cm long
Saturated steam at 230 degrees F, 20.78 psia and 19.386 ft cubed per pound of mass enters a compressor with an internal energy of 108.26 Btu/lb of mass and is compressed to 80 psia. the mass flow rate is 50 lb mass per hour. Heat loss from the compre..
in the bird-on-a-wire group work example how do you expect the angle and tension to be related? remember that this is
a team of astronomers have proposed to construct a large parabolic telescope mirror by spinning a cylindrical container
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