Login
Login
Register
Questions
Unanswered
Tags
Categories
Ask a Question
Ask a Question
Recent questions tagged device efficiency
+2
votes
1
answer
What is the specific heat of a gas in an isothermal process ?
asked
Apr 2, 2019
in
Class 12
by
kratos
neet
class-11
aiims
jee
thermodynamics
jee mains
device efficiency
+2
votes
1
answer
Air enters a compressor at ambient conditions, 100 kPa, 300 K, and exits at 800 kPa. If the isentropic compressor efficiency is 85%,
asked
Mar 30, 2019
in
Mathematics
by
kratos
bernoulli
thermodynamics
device efficiency
reversible shaft work
law efficiency
+3
votes
1
answer
What is the specific heat of a gas in isothermal process ?
asked
Mar 29, 2019
in
Class 12
by
kratos
neet
class-11
aiims
jee
thermodynamics
jee mains
device efficiency
+3
votes
1
answer
The Specific heat of a gas in an isothermal Process is
asked
Mar 27, 2019
in
Class 12
by
kratos
neet
class-11
aiims
thermodynamics
device efficiency
+3
votes
1
answer
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
asked
Mar 25, 2019
in
Mathematics
by
kratos
thermodynamics
bernoulli equation
device efficiency
processes multiple devices
reversible shaft work
steady state
+1
vote
1
answer
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
+2
votes
1
answer
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?
asked
Mar 15, 2019
in
Mathematics
by
kratos
bernoulli
thermodynamics
reversible processes
device efficiency
processes multiple devices
reversible shaft work
steady state
+1
vote
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
asked
Feb 12, 2019
in
Mathematics
by
kratos
reversible shaft work
thermodynamics
device efficiency
bernoulli
+2
votes
1
answer
What is the difference between a nozzle flow and a throttle process?
asked
Feb 9, 2019
in
Mathematics
by
kratos
thermodynamics
irreversibility
the first law of thermodynamics
irreversible processes
device efficiency
steady state
+3
votes
1
answer
Hollowcone nozzle is used to spray a. Weedicide b. Insecticides
asked
Feb 6, 2019
in
Mathematics
by
kratos
bernoulli
reversible shaft work
thermodynamics
bernoulli equation
device efficiency
general entomology
+1
vote
1
answer
Can you say something about changes in m and V through a steady flow device?
asked
Feb 4, 2019
in
Mathematics
by
kratos
compressors
fans
availability
thermodynamics
steady single flow devices
device efficiency
+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
+3
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
+3
votes
1
answer
A centrifugal compressor takes in ambient air at 100 kPa, 15°C, and discharges it at 450 kPa. The compressor has an isentropic efficiency of 80%.
asked
Dec 30, 2018
in
Mathematics
by
kratos
thermodynamics
device efficiency
+2
votes
1
answer
A flow of water at some velocity out of a nozzle is used to wash a car. The water then falls to the ground. What happens to the water state in terms
asked
Dec 16, 2018
in
Mathematics
by
kratos
thermodynamics
single flow devices
device efficiency
the first law of thermodynamics
+2
votes
1
answer
Air enters the turbocharger compressor (of an automotive engine at 100 kPa, 30°C, and exits at 170 kPa. The air is cooled by 50°C
asked
Dec 15, 2018
in
Mathematics
by
kratos
thermodynamics
irreversibility
law efficiency
device efficiency
+3
votes
1
answer
Air enters a turbine at 800 kPa, 1200 K, and expands in a reversible adiabatic process to 100 kPa. Calculate the exit temperature
asked
Dec 10, 2018
in
Mathematics
by
kratos
thermodynamics
reversible processes
steady single flow devices
device efficiency
steady state
+2
votes
1
answer
Find the second law efficiency of the heat pump has a coefficient of performance of 2 using a power input of 2 kW. Its low temperature
asked
Dec 8, 2018
in
Mathematics
by
kratos
thermodynamics
the second law of thermodynamics
rates or fluxes of entropy
device efficiency
+2
votes
1
answer
Find the isentropic efficiency of the nozzle in Can you say something about changes in m and V through a steady flow device?
asked
Nov 30, 2018
in
Mathematics
by
kratos
thermodynamics
device efficiency
+2
votes
1
answer
Steam enters a turbine at 300°C, 600 kPa and exhausts as saturated vapor at 20 kPa. What is the isentropic efficiency?
asked
Nov 27, 2018
in
Mathematics
by
kratos
thermodynamics
device efficiency
To see more, click for the
full list of questions
or
popular tags
.