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Magnetic resonance imaging (MRI) employs a strong magnetic field to produce detailed pictures of internal organs and tissues. As shown in Fig., the patient reclines on a table that slides into the cylindrical opening where the field is created. Considering a MRI scanner as a system, identify locations on the system boundary where the system interacts with its surroundings. Also describe significant occurrences within the system and the measures taken for patient comfort and safety. Write a report including at least three references.
consider a thermal energy reservoir at 1000 k that can supply heat at a rate of 100000 kjh. determine the exergy of
determine the amount of heat necessary to raise the temperature of 1 kg of aluminum from 30oc to 100oc.
Refrigerant 22 enters an insulated compressor operating at steady state as saturated vapor at - 16oC with a mass flow rate of 1.5 kg/s. Refrigerant exits at 7 bar, 70oC. Changes in KE and PE from inlet to exit can be ignored.
Draw the T-s diagram (hint: it would help to begin with a schematic of the cycle) and.
cold water at 20oc and 5000 kgh is to be heated by hot water supplied at 80oc and 10000 kgh. you select from a
a fixed amount of water vapor initially at 20mpa 520c is cooled at constant volume until its temperature reaches
determine the number of vehicles needed to satisfy the indicated deliveries per hour? Assume that availability = 0.90.
With the aid of diagram, briefly explain how collector current is obtain if the transistor is connected in c-e configuration. How is phase reversal achieved between the input and output in the circuit
Refrigerant - 12 as saturated vapor at 0.5 MPa is isentropically compressed by a compressor in a refrigeration plant to 0.9 MPa. Determine the enthalpy change for the process and the final fluid phase.
a closed fricitionless piston-cylinder assembly contains 4 lbm of water. beginning with an initial volume 10 ft3 the
an otto cycle engine has an initial air pressure and temperature of 14.7 psia and 60deg f respectively. 750 btu of heat
a hot air ballon is traveling upward at a velocity of 10.94 fts and at a horizontal velocity of 18.23 fts. if sand bag
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