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A converging-diverging nozzle operates at steady state. Air as an ideal gas with k 5 1.4 flows through the nozzle, discharging to the atmosphere at 14.7 lbf/in.2 and 5108R. A normal shock stands at the exit plane with px 5 9.714 lbf/in.2 The exit plane area is 2 in.2 Upstream of the shock, the flow is isentropic. Determine
(a) the throat area, in in.2
(b) the entropy produced in the nozzle, in Btu/8R per lb of air flowing.
in a window unit of air conditioners the temperature of the room to be cooled is around 20oc rather than -20oc as in
a 4mx5mx6m room is to be heated by a baseboard resistance heater. it is desired that the resistance heater be able to
Flowing in a convergent nozzle. At a particular location within the nozzle the pressure is 280kPa, the stream temperature is 345K, and the velocity is 150 m/s. If the cross-section area at this location is 9.29 x 10^3m^2,
a horizontal insulated cylinder has a frictionless piston held against stops by an external force of 500 kn. the piston
a rigid closed tank of volume 3 m3 contains 5 kg of wet steam at a pressure of 200 kpa. the tank is heated until the
An incompressible steady ?ow of a ?uid, such as a strati?ed ?ow of salt water (as in the isthmus between a fresh body of water and a body of salt water), ?ows in a channel with a sudden change in the height of the channel bottom (this allows for n..
A vertical cylinder fitted with a piston contains air initially at 120kPa and 100C. The piston is restrained by a set of stops. The piston diameter is 0.1m, its mass is 5kg, and the ambient pressure and temperature are 100kPa and 20C. The cylinder is..
a 100ft cable is made using a 12-gauge 0.1055in steel wire and three strands of 10gauge .1019in copper wire. find the
the tank has a 180mm diameter and 12 mm wall thickness. knowing that the tank contains compressed air under a pressure of 8 Mpa, determine the magnitude t of applied torque for which the maximum normal stress in tank is 75 Mpa.
a motor delivers 275 hp at 1000 rpm to the end of a shaft. the gears at b and c take out 125 and 150 hp
an injected slug of tracer material flows with its carrier fluid down a long straight pipe in dispersed plug flow. at
Discuss some of the circumstances where mechanical ventilation is required in the welding standards.
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