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The exit velocity of a nozzle is 500 m/*. If ηnozzle = 0.88 what is the ideal exit velocity?
asked
Mar 22, 2019
in
Mathematics
by
kratos
nozzles
bernoulli
diffusers
thermodynamics
device efficiency
pipe
reversible shaft work
pumps
+3
votes
1
answer
In time t, an amount of heat Q flows through the solid door of area A and thickness d represented.
asked
Mar 18, 2019
in
Mathematics
by
kratos
transient processes
availability
thermodynamics
pipe
pumps
law efficiency
+2
votes
1
answer
A steam turbine receives water at 15 MPa, 600°C at a rate of 100 kg/*, In the middle section 20 kg/* is withdrawn at 2 MPa, 350°C,
asked
Feb 14, 2019
in
Mathematics
by
kratos
thermodynamics
pumps
pipe
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1
answer
Find the internal energy of 1 kg of superheated steam at a pressure of 10 bar and 280C.
asked
Jan 28, 2019
in
Mathematics
by
kratos
thermodynamics
pumps
pipe
+2
votes
1
answer
A small turbine delivers 150 kW and is supplied with steam at 700°C, 2 MPa. The exhaust passes through a heat exchanger where
asked
Jan 23, 2019
in
Mathematics
by
kratos
thermodynamics
pipe
device efficiency
processes multiple devices
pumps
law efficiency
steady state
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votes
1
answer
Liquid water at 15°C flows out of a nozzle straight up 15 m. What is nozzle Vexit?
asked
Jan 14, 2019
in
Mathematics
by
kratos
thermodynamics
single flow devices
pipe
heat transfer
device efficiency
irreversible processes
pumps
steady state
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vote
1
answer
If the water pressure gauge shows the pressure at ground floor to be 270 kPa, how high would water rise in the pipes of a building?
asked
Jan 10, 2019
in
JEE
by
kratos
fluid mechanics
jee
thermodynamics
jee mains
pipe
pumps
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vote
1
answer
A small water pump is used in an irrigation system. The pump takes water in from a river at 50 F, 1 atm at a rate of 10 lbm/*.
asked
Dec 10, 2018
in
Mathematics
by
kratos
thermodynamics
single flow devices
pipe
pumps
+2
votes
1
answer
The exit velocity of a nozzle is 1500 ft/*. If ηnozzle = 0.88 what is the ideal exit velocity?
asked
Dec 7, 2018
in
Mathematics
by
kratos
bernoulli
thermodynamics
single flow devices
pipe
reversible shaft work
pumps
stagnation properties
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votes
1
answer
A pipe flows water at 15°C from one building to another. In the winter time the pipe loses an estimated 500 W of heat transfer.
asked
Nov 24, 2018
in
Mathematics
by
kratos
thermodynamics
pumps
pipe
+2
votes
1
answer
A large expansion engine has two low velocity flows of water entering. High pressure steam enters at point 1 with 2.0 kg/* at 2 MPa,
asked
Nov 20, 2018
in
Mathematics
by
kratos
thermodynamics
pumps
pipe
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vote
1
answer
A room is heated with an electric space heater on a winter day. Examine the following control volumes, regarding heat transfer
asked
Nov 18, 2018
in
Mathematics
by
kratos
carnot cycles
thermodynamics
rates or fluxes of entropy
pipe
pumps
+3
votes
1
answer
A turbine in a steam power plant operating under steady state conditions receives superheated steam at 3MPa and 350C
asked
Oct 24, 2018
in
Mathematics
by
kratos
availability
thermodynamics
pipe
the first law of thermodynamics
processes multiple devices
pumps
steady state
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vote
1
answer
A compressor receives 0.1 kg/* R-134a at 150 kPa, -10°C and delivers it at 1000 kPa, 40°C. The power input is measured to be 3 kW.
asked
Oct 20, 2018
in
Mathematics
by
kratos
thermodynamics
pumps
pipe
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vote
1
answer
A 2 m^2 window has a surface temperature of 15°C and the outside wind is blowing air at 2°C across it with a convection heat transfer coefficient
asked
Oct 9, 2018
in
Mathematics
by
kratos
thermodynamics
rates or fluxes of entropy
pipe
entropy of a liquid or a solid
pumps
+2
votes
1
answer
A compressor receives R-134a at –10°C, 200 kPa with an exit of 1200 kPa, 50°C. What can you say about
asked
Oct 7, 2018
in
Mathematics
by
kratos
compressors
fans
available energy
thermodynamics
reversible processes
reversible work
pipe
pumps
steady state
+1
vote
1
answer
A cutting tool uses a nozzle that generates a high speed jet of liquid water. Assume an exit velocity of 1000 m/* of 20°C liquid water
asked
Sep 26, 2018
in
Mathematics
by
kratos
thermodynamics
pumps
pipe
+2
votes
1
answer
A compressor receives air at 290 K, 100 kPa and a shaft work of 5.5 kW from a gasoline engine. It should deliver a mass flow rate of 0.01 kg/*
asked
Sep 20, 2018
in
Mathematics
by
kratos
thermodynamics
reversible processes
device efficiency
pipe
pumps
boundary work
steady state
+3
votes
1
answer
An escalator brings four people of total 300 kg, 25 m up in a building. Explain what happens with respect to energy transfer
asked
Sep 16, 2018
in
Mathematics
by
kratos
polytropic processes
force displacement work
thermodynamics
pipe
pumps
+2
votes
1
answer
A steam turbine receives water at 2000 lbf/in.^2, 1200 F at a rate of 200 lbm/* In the middle section 40 lbm/* is withdrawn
asked
Aug 12, 2018
in
Mathematics
by
kratos
multiple flow devices
thermodynamics
pipe
pumps
steady irreversible processes
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