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A two stage reciprocating air compressor works between pressure limits of 1 bar and 20 bar. The inlet temperature is 150C and the polytrophic index is 1.29. Inter cooling between stages reduce the air temperature back to 150C. Both stages have the same stroke. Neglect the effect of clearance volume.
Calculate the following:
a) The free air delivery for each kWh of indicated work.
b) The mass of air that can be compressed for each kW h for indicated work.
c) The ratio of the cylinder diameters
a 27 kg block is pulled across a horizontal surface by a rope. the block has an acceleration of 3.5 ms2 and the
A rod of mass m =0.59 kg and length L=35cm rotates about an axis during one end that is perpendicular to the rod. Compute the rotational inertia of this object. If the object is accelerated from rest with a torque of 1.2 N/m about the same axis, how ..
In an experiment, 300 g of aluminum (with a specific heat of 900 J/kg·K) at 100°C is mixed with 54.0 g of water (4186 J/kg·K) at 20°C, What is the entropy change of the aluminum-water system
Suppose a charge +Q is placed on Earth, and another charge +Q isplaced on the Moon. Find the value of Q needed to "balance" the gravitationattraction between the Earth and the Moon.
What scientific principles/techniques are important in designing and manufacturing electronic devices, including a brief discussion of why the principles/techniques are important.
A 2600 kg truck traveling north at38 km/h turns east and accelerates to 50 km/h.? What is the change in the truck's kinetic energy? What is the magnitude of the change in the linear momentum of the truck?
At what temperature does a carbon resistor have a resistance of 995ohms, if it has a resistance of 1000 ohms at 20 degrees? What is its conductivity at the new temperature
A three disks are released at the same time at the top of an inclined plane. Let disk 1 have a mass M and a radius R, disk 2 have a mass M and a radius 2R, Determine the rank from largest to smallest time for the race
four protons are placed at the corners of a square of side length a 1.0 angstrom. the square is in the x y quadrant of
A 22.0 m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder of aluminum 4.50 cm in diameter. How far to the side does the top of the pole flex
There are three blocks connected by strings. Each block has the mass as following mass, m1=1.0kg, m2=2.7kg, m3=2.0kg. Assuming there is no friction. Find the acceleration of the blocks
Explain what is the difference between 10 dB and 20dB - Playing middle C on the piano keyboard produces a sound with a frequency of 256 Hz. Assuming the speed of sound in air is 345 m/s, determine the wavelength of the sound corresponding to the n..
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