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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
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kratos
thermodynamics
bernoulli equation
device efficiency
processes multiple devices
reversible shaft work
steady state
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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
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kratos
bernoulli
entropy of ideal gases
thermodynamics
bernoulli equation
reversible shaft work
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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
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kratos
reversible shaft work
thermodynamics
bernoulli equation
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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
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kratos
bernoulli
thermodynamics
bernoulli equation
reversible processes
polytropic processes
reversible shaft work
steady state
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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
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Mathematics
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kratos
bernoulli
thermodynamics
reversible processes
bernoulli equation
reversible shaft work
steady state
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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
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Mathematics
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kratos
reversible shaft work
thermodynamics
bernoulli equation
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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
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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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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
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Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli equation
bernoulli
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Hollowcone nozzle is used to spray a. Weedicide b. Insecticides
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Feb 6, 2019
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Mathematics
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kratos
bernoulli
reversible shaft work
thermodynamics
bernoulli equation
device efficiency
general entomology
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A reversible adiabatic flow of liquid water in a pump has increasing P. How about T?
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Jan 2, 2019
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Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli equation
bernoulli
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You observe that carbon dioxide sublimes. Which of the following statements about the signs of this process is/are true?
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Dec 27, 2018
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JEE
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kratos
transient processes
structure of matter and molecule
chemical bonding
jee
nsec
thermodynamics
class-9
bernoulli equation
jee mains
reversible shaft work
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Carbon dioxide flows through a device entering at 300 K, 200 kPa and leaving at 500 K. The process is steady state polytropic with n = 3.8
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Dec 14, 2018
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Mathematics
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kratos
reversible shaft work
thermodynamics
bernoulli equation
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A stream of ammonia enters a steady flow device at 100 kPa, 50°C, at the rate of 1 kg/*. Two streams exit the device at equal mass
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Dec 8, 2018
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Mathematics
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kratos
nozzles
compressors
fans
availability
diffusers
thermodynamics
bernoulli equation
reversible shaft work
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A pump/compressor pumps a substance from 100 kPa, 10°C to 1 MPa in a reversible adiabatic process. The exit pipe has a small *****,
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Dec 3, 2018
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Mathematics
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kratos
reversible shaft work
thermodynamics
bernoulli equation
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1
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An electric dip heater is put into a cup of water and heats it from 20°C to 80°C. Show the energy flow(*) and storage and explain
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Dec 1, 2018
in
Mathematics
by
kratos
entropy generation
heat exchangers
continuity equation
thermodynamics
bernoulli equation
polytropic processes
reversible shaft work
flow rates
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Calculate the air temperature and pressure at the stagnation point right in front of a meteorite entering the atmosphere (-50 °C, 50 kPa)
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Nov 27, 2018
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Mathematics
by
kratos
nozzles
diffusers
thermodynamics
bernoulli equation
reversible processes
reversible shaft work
law efficiency
steady state
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1
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Helium gas enters a steady-flow expander at 120 lbf/in.^2, 500 F, and exits at 18 lbf/in.^2. The mass flow rate is 0.4 lbm/*, and the expansion
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Nov 21, 2018
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Mathematics
by
kratos
reversible shaft work
thermodynamics
bernoulli equation
bernoulli
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Refrigerant R-12 at 30°C, 0.75 MPa enters a steady flow device and exits at 30°C, 100 kPa. Assume the process is isothermal and reversible.
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Nov 18, 2018
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Mathematics
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kratos
reversible shaft work
thermodynamics
bernoulli equation
availability
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A firefighter on a ladder 25 m above ground should be able to spray water an additional 10 m up with the hose nozzle of exit diameter 2.5 cm.
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Oct 31, 2018
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Mathematics
by
kratos
bernoulli
thermodynamics
bernoulli equation
device efficiency
reversible shaft work
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