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Engineering
Felix Terrell
A well-insulated tank in a vapor power plant operates at steady state. Saturated liquid water enters at inlet 1 at a rate of 125 lbm/s at 14.7 psia. Make-up water to replenish steam losses from the plant enters at inlet 2 at a rate of 10 lbm/s at 14.7 psia and 60o F. Water exits the tank at 14.7 psia. Neglect kinetic and potential energy effects, determine for the water exiting the tank (a) The mass flow rate (in lbm/s) (b) The temperature (in o F)
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Engineering
Darren Graham
Choose the correct option in terms of Issues related to professional responsibility
a) Confidentiality
b) Intellectual property rights
c) Both Confidentiality & Intellectual property rights
d) Managing Client Relationships
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Engineering
Damian Hodge
When are speed bumps commonly used where?
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Engineering
Jose Sandoval
1. Asphyxiation is a hazard posed by Compressed Natural Gas (CNG) vehicles and can be detected when you notice this smell.
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Engineering
Kareem Hester
Hot water (cph = 4188 J/kg·K) with a mass flow rate of 2.5 kg/s at 100°C enters a thin-walled concentric tube counterflow heat exchanger with a surface area of 23 m2 and an overall heat transfer coefficient of 1000 W/m2 ·K. Cold water (cpc = 4178 J/kg·K) with a mass flow rate of 5 kg/s enters the heat exchanger at 20°C. Determine
(a) the heat transfer rate for the heat exchanger and
(b) the outlet temperatures of the cold and hot fluids. After a period of operation, the overall heat transfer coefficient is reduced to 500 W/m2 ·K, so determine
(c) the fouling factor that caused the reduction in the overall heat transfer coefficient.
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Engineering
Kash Crane
1. What is the linear distance traveled in one revolution of a 9 in diameter wheel?
2. An industrial water shutoff valve is designed to operate with 15 Ib of effort force. The valve will encounter 155 Ib of resistance force applied to a 0.85 in diameter axle. What is the actual mechanial advantage of the sytem?
3. If the diameter of the wheel is 10.5 inches, what is the efficiency of the wheel and axle system?
4. A block and tackle system with 8 supporting strands is used to lift materials in a manufacturing facility. The motor being used to wind the cable in the pulley system can provide 200 Ib of force. What is the ideal mechanical advantage of the pulley system?
5. Ideally what is the maximum weight of materials that can be lifted?
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Engineering
Chapman
What is the relation between Poisson's ration, young's modulus, shear modulus for an material?
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Engineering
Dania
he major difficulty in designing line graphs (a) - lies in selecting the appropriate color to shade each line (b) - lies in properly choosing the spacing for each axis (c) - lies in making sure that more than three data lines are not separated by visible space (d) - lies in properly placing the independent variable and the dependent variable
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Engineering
Carl Lynch
An inclined plane is a simple machine that can be described as a ramp.
Group of answer choices
True
False
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Engineering
Gael
Which engine component must be able to withstand the extreme heat produced by the burning air-and-fuel mixture as well as the physical forces produced during the power stage?
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Engineering
Donavan Khan
Given the scope of the problems and cheating exposed in the VW emissions cheating scandal, there's reason to believe the scandal will spread to gasoline engines and carbon dioxide emissions, which are considered a prime cause of climate change. a. trueb. false
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Engineering
Guest
Due to loading, a line segment has length 2 m with constant normal strain 0.25. What is the original length of the line segment? Due to loading, a line segment has length 2 with constant normal strain 0.25. What is the original length of the line segment? 1.60 m 1.50 m 1.75 m 2.67 m 2.50 m 2.25 m
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Engineering
Malik Gross
What is a ground fault circuit interrupter and why should it be used in carpentry?
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Engineering
Javier Romero
Before factories made large-scale production possible, what type of workers produced goods like shoes or cloth?
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Engineering
Reese Johns
For some transformation having kinetics that obey the Avrami equation (Equation 10.17), the parameter n is known to have a value of 1.1. If, after 129 s, the reaction is 50% complete, how long (total time) will it take the transformation to go to 86% completion?
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