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1. Determine the critical pressure and temperature ratios for
(a) air,
(b) carbon dioxide,
(c) helium.
2. Determine the static pressure to stagnation pressure ratio associated with the following motion in standard air:
(a) a runner moving at the rate of 10 mph,
(b) a cyclist moving at the rate of 40 mph,
(c) a car moving at the rate of 65 mph,
(d) an airplane moving at the rate of 500 mph.
a thick black-painted wood block at 20 c is subjected to constant solar flux of 1250 wm2. if the absorptance of the
A satellite of mass m revolves around a planet of mass M in a circular orbit of radius r. What is the magnitude of the angular momentum of the satellite?
a steel ring of mean diameter 250 mm has a square section 2.5 mm by 2.5 mm. it is split by a narrow radial saw cut. the
Consider a 2500 psia/1000 F turbine inlet, single reheat to 1000 F cycle with a reheat pressure ratio of P2/P1= 0.2 and a steam mass flow rate of 2 x 10^6 ibm/hr. The condensor operates at a pressure of 1 psia. Pump and turbine isentropic efficiencie..
a simply supported circular cylindrical shell of radius a and length l carries its own weight p per unit area that is
The angular velocity of the impeller is 960 rpm. The exit velocity as seen from a coordinate system attached to the impeller can be assumed to be tangent to the vane at its trailing edge. Calculate the power required to drive the pump.
the performance of a device is defined as the ratio of the desired output to the required input and this definition can
the velocity field v -axi byj can be interpreted to represent flow in a corner. obtain the equation for the flow
What is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 22°C and -6°C respectively?
A spring-mass system is subjected to Coulomb damping. When a harmonic force of amplitude 120 N and frequency 2.5173268 Hz is applied, the system is found to oscillate with an amplitude of 75 mm.
1 for the piping diameter changes and flow directions shown below if the velocity at the input is 5 ms the initial
A pneumatic displacement gage has d1=0.762 mm and d2=1.575 mm. The supply pressure is 68919.7 Pa with a random fluctuation of ±483 Pa, and the differential pressure Pd-Pa is measured with a water manometer that may be read with an uncertainty of 12.4..
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