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Recent questions tagged reversible shaft work
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A linear spring, F = ks (x − x0), with spring constant ks = 35 lbf/ft, is stretched until it is 2.5 in. longer. Find the required
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Apr 6, 2019
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Mathematics
by
kratos
reversible shaft work
thermodynamics
force displacement work
bernoulli
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1
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Two tanks are connected by a valve and line. The volumes are both 35 ft^3 with R-134a at 70 F, quality 25% in A
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Apr 2, 2019
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Mathematics
by
kratos
multiple devices
energy equation
bernoulli
thermodynamics
cycle processes
reversible shaft work
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1
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Air enters a compressor at ambient conditions, 100 kPa, 300 K, and exits at 800 kPa. If the isentropic compressor efficiency is 85%,
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Mar 30, 2019
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Mathematics
by
kratos
bernoulli
thermodynamics
device efficiency
reversible shaft work
law efficiency
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1
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A rigid 35 ft^3 tank contains water initially at 250 F, with 50 % liquid and 50% vapor, by volume. A pressure-relief valve on the top of the tank
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Mar 28, 2019
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Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli
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1
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A certain industrial process requires a steady 0.5 kg/* of air at 200 m/*, at the condition of 150 kPa, 300 K. This air is to be the exhaust from
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Mar 25, 2019
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Mathematics
by
kratos
thermodynamics
bernoulli equation
device efficiency
processes multiple devices
reversible shaft work
steady state
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1
answer
A liquid is compressed in a reversible adiabatic process. What is the change in T?
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Mar 24, 2019
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Mathematics
by
kratos
bernoulli
entropy of ideal gases
thermodynamics
bernoulli equation
reversible shaft work
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1
answer
The exit velocity of a nozzle is 500 m/*. If ηnozzle = 0.88 what is the ideal exit velocity?
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Mar 22, 2019
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Mathematics
by
kratos
nozzles
bernoulli
diffusers
thermodynamics
device efficiency
pipe
reversible shaft work
pumps
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1
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A large storage tank contains saturated liquid nitrogen at ambient pressure, 100 kPa; it is to be pumped to 500 kPa and fed to a pipeline
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Mar 21, 2019
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Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli equation
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1
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Saturated water vapor at 20 psia is compressed to 60 psia in a reversible adiabatic process. Find the change in v and T.
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Mar 16, 2019
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Mathematics
by
kratos
bernoulli
thermodynamics
bernoulli equation
reversible processes
polytropic processes
reversible shaft work
steady state
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An air compressor has a significant heat transfer out. for how high T becomes if no heat transfer. Is that good or should it be insulated?
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Mar 15, 2019
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Mathematics
by
kratos
bernoulli
thermodynamics
reversible processes
device efficiency
processes multiple devices
reversible shaft work
steady state
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1
answer
A 35 ft^3 rigid tank has air at 225 psia and ambient 600 R connected by a valve to a piston cylinder. The piston of area
asked
Mar 15, 2019
in
Mathematics
by
kratos
transient processes
compressibility factor
bernoulli
thermodynamics
polytropic processes
reversible shaft work
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vote
1
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Saturated water vapor at 200 kPa is compressed to 600 kPa in a reversible adiabatic process. Find the new v and T.
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Mar 12, 2019
in
Mathematics
by
kratos
bernoulli
thermodynamics
reversible processes
bernoulli equation
reversible shaft work
steady state
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vote
1
answer
A watercooled air compressor takes air in at 70 F, 14 lbf/in.2 and compresses it to 80 lbf/in.2. The isothermal efficiency is 80% and the actual
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Mar 7, 2019
in
Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli
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1
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Carbon dioxide gas enters a steady-state, steady-flow heater at 45 lbf/in.^2 60 F, and exits at 40 lbf/in.^2, 1800 F.
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Mar 5, 2019
in
Mathematics
by
kratos
bernoulli
thermodynamics
single flow devices
reversible shaft work
heaters coolers
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1
answer
You drive on the highway with 120 km/h on a day with 17°C, 100 kPa atmosphere. When you put your hand out of the window
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Mar 4, 2019
in
Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli equation
+3
votes
1
answer
Find the Laurent series expanded around z = 0 for f(z) = 1/z(z - 2).
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Feb 27, 2019
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Mathematics
by
kratos
bernoulli
differential equations
jee
mathematical physics
thermodynamics
class-9
algebraic identities
jee mains
reversible shaft work
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1
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An expansion in a gas turbine can be approximated with a polytropic process with exponent n = 1.25. The inlet air is at 2100 R, 120 psia
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Feb 25, 2019
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Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli equation
bernoulli
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What pressure difference does a 10 m column of atmospheric air show ?
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Feb 17, 2019
in
Mathematics
by
kratos
energy
thermodynamics
bernoulli equation
force
the first law of thermodynamics
reversible shaft work
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1
answer
Helium gas enters a steady-flow expander at 800 kPa, 300°C, and exits at 120 kPa. The mass flow rate is 0.2 kg/*, and the expansion
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Feb 16, 2019
in
Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli equation
bernoulli
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1
answer
A water-cooled air compressor takes air in at 20°C, 90 kPa and compresses it to 500 kPa. The isothermal efficiency is 80% and the actual compressor
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Feb 12, 2019
in
Mathematics
by
kratos
reversible shaft work
thermodynamics
device efficiency
bernoulli
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