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A turbine rotor is run at the natural frequency of the system. A stroboscope indicates that the maximum displacement of the rotor occurs at an angle 229° in the direction of rotation. At what angular position must mass be removed from the rotor in order to improve its balancing?
(i) What is the expression for b(t) in terms of b(t -1)? (ii) What is the equilibrium debt/income ratio? Is this country a creditor or debtor in equilibrium? (iii) If the initial debt/income ratio is 30%, will this rise or fall over time?
glycolysis can be simplified asglucose 2pi 2adp 2nad -gt 2 pyruvate 2atp 2nadh 2h 2h2oa calculate the standard
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr. When the steam exits the boiler it's temperature is 1000°F and its pressure is 1400psi...
Consider the air chilling process of Problem 7.110a. Determine the outlet air temperature To and mass rate at which the PCM is melted for s = 0.30. Assume the total mass of PCM and the mass flow rate of air are unchanged. The length of the containmen..
you are manufacturing a frame for a vehicle out of some aluminum alloy 6061-t451 tubing. the frame is to be welded
a non-ideal brayton cycle with regeneration operates with incoming air at 22c and 0.1mpa. the compression ratio is 121
The company sets the quality specification to 2 ±0.25 inches per second because an average customer is likely to complain and return the tape if the speed is off by more than 0.25 inch per second. The cost per return is $36. The repair cost before th..
a gas may be considered rare?ed that is it can not be studied with theories based on the continuum assumption if it
What do you understand by ‘scalability'? Discuss the differences between ‘scaling up' and ‘scaling out' and explain when these different approaches to scalability may be used.
The isentropic compressor efficiency is 80%. Refrigerant exits the condenser as a saturated liquid at 160 lbf/in.2 The mass flow rate of the refrigerant is 0.15 lb/s. Kinetic and potential energy changes are negligible as are changes in pressure f..
a rigid 2-ft3 vessel contains water originally at 150of and 5.07 percent quality. the water is then heated until its
Steam enters a converging nozzle at 800 kPa and 280 C with negligible velocity. If the expansion is isentropic, what is the minimum pressure that can be reached in such a nozzle and what is the cross-sectional area at the nozzle throat at this pressu..
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