A converging - diverging frictionless nozzle is used to accelerate an airstream emanating from a large chamber. The nozzle has a
n exit area of 30 cm^2 and a throat area of 15 cm^2. If the ambient pressure surrounding the nozzle is 101 kPa and the chamber temperature is 500 K, calculate the following:
A) Minimum chamber pressure to choke the nozzle
B) Mass flow rate for a chamber pressure of 400 kPa
A) Minimum chamber pressure to choke the nozzle
B) Mass flow rate for a chamber pressure of 400 kPa
2 answers:
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Answer: Fulcrum
Definition:
the point on which a lever rests or is supported and on which it pivots.
Definition:
the point on which a lever rests or is supported and on which it pivots.
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The application of force is the main difference between truss and frame.
Explanation:
<u>Truss: </u>
Truss is a collection of beams,which use to handle the tensile and compression loads . That collection of beams creates rigid structure.
The load on the truss will be acting always at the at the hinge. Truss is widely used in the construction areas.
<u>Frame:</u>
Like truss, it is also a combination of beams and used to handle the loads. The main difference between truss and frame is the application of load. In the frame load can apply at the any point of the member of frame along with hinge.
Truss are connected by pin joint and can not transfer moment ,on the other hand frames are connected by rigid joint like welding so frame can transfer moment.
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Answer:
Explanation:
a) the steady-state, 1-D incompressible and no energy generation equation can be expressed as follows:
b) For a transient, 1-D, constant with energy generation
suppose T = f(x)
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where;
= heat generated per unit volume
= Thermal diffusivity
c) The heat equation for a cylinder steady-state with 2-D constant and no compressible energy generation is:
where;
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d) The heat equation for a wire going through a furnace is:
since;
the steady-state is zero, Then:
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e) The heat equation for a sphere that is transient, 1-D, and incompressible with energy generation is: