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Air enters the compressor of an ideal cold air-standard Brayton cycle at 100 kPa, 300K, with a mass flow rate of 6 kg/s. The compressor pressure ratio is 10, and the turbine inlet temperature is 1400K. For k=1.4, calculate: (a) the thermal efficiency of the cycle (b) the back work ratio (c) the net power developed, in kW
for a wind speed of 6 ms a stack gas exit velocity of 20 ms a stack diameter of 4 m a heat emission rate of 15 mw and
one mole of an ideal gas at 1.0 mpa and 300k is heated at constant pressure till the volume is doubled and then it is
a single cycle of a ramp function of voltage versus time has the form vt 100t from -0.01 to 0.01 s. using direct
air at 100 kpa and 27degc enters an isentropic compressor at a rate of 100 ls and leaves at 1000 kpa. determine the
a jet-propelled object has a straight-line motion according to the equation x 2 t2 - 2t - 2 where x is in meters and t
the two bars shown in the figure are used to support a load p. when unloaded joint b has coordinates 0 0. after load p
you are designing an ex vivo artificial organ. the cells in the organ cannot tolerate shear stress in excess of 0.5 gcm
a thermocouple is placed in an exhaust pipe in a diesel engine. thermocouple is reading 500oc while the exhaust pipe is
two moles of nitrogen are initially at 10 bar and 600 k state 1 in a horizontal pistoncylinder device. they are
A slab of intrinsic GaAs, 3cm long, 2cm wide, and 0.3cm thick, is exposed to light. The light is absorbed with an absorption coefficient a=500cm-1 (this means that the light intensity decreases in the material exponentially with distance t, and is pr..
A piston-cylinder assembly initially contains 4 mol of substance X in vapor phase at 0.8 bar and 373 K. The vapor is compressed isothermally and reversibly until the first droplet of liquid forms.
Methane gas (CH4) enters a compressor at 298 K, 1 bar and exits at 2 bar and temperature T. Employing the ideal gas model, determine T, in K, if there is no change in specific entropy from inlet to exit.
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