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1. According to the pore filling theory, the shrinkage of a compact occurs by a successive accommodation and recovery of grain shape. Explain the process of sample shrinkage in detail and its related driving force.
2. Discuss the effects of wetting angle and dihedral angle on densification and grain growth in liquid phase sintering. All other parameters that affect densification and grain growth are assumed to be invariable.
1. Steady-state conditions exist in the circuit shown in Figure P5.27 for t 0. The switch is closed at t = 0. V1 = 12 V C = 0.47 μF R1 = 680 Q R2 = 2.2 kQ R3 = 1.8 kQ Determine the time constant of the circuit for t > 0.
a gas refrigeration system uses helium as the working fluid operates with a pressure ratio of 3.5. the temperature of
Can you form any conclusions about the effect of the mass ratio on the response of the primary system - What is wrong with using very large μ in an absorber design?
10 mols of liquid benzene at 20degc and 1 bar is pumped to 5 bar. at the inlet conditions the molar volume of benzene
Save Your Professor's Life EGE 2013, Prof. J. Kerns Spring 2016. At this point, you have determined the specifications for load factors, bolt strengths, and the strength of the strut. Also, you calculated distribution of the lift as a function of p..
1. Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 248C and exits at 1 bar. If the refrigerant undergoes a throttling process, what is the quality of the refrigerant exiting the expansion v..
a state runs a lottery in which 6 numbers are randomly selected from 40 without replacement. a player chooses 6 numbers
A room is heated as a result of solar radiation coming in through the windows. Is this a heat or work interaction for the room?
The company has been asked to assess the effects of a variety of engineering conditions on a selection of components, perform calculations for the components that follow. A medium carbon annealed steel rod has a rectangular cross section and must cop..
Consider a sample of thickness L = 25 mm and a square planform of width W = 250 mm. In an experiment per- formed under steady-state conditions, temperature mea- surements made at the lower and upper surface of the sample yield values of T1 = 150°C..
Methane (CH4) is burned with dry air. The volumetric analysis of the products on a dry basis is 5.20 percent CO2, 0.33 percent CO, 11.24 percent O2, and 83.23 percent N2. Determine
consider an air-standard otto cycle and a modified cycle in which the isentropic compression and expansion processes
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