Which device extracts work from a steady flow of fluid?
turbine
Air exist a diffuser at a higher pressure than it enters:? T/F
True
An ideal gas is compressed isothermally from 100kPa to 900kPa. The change in enthalpy is.
Zero
An air conditioner condenser uses a fan driven flow of air to cool a flow of liquid refrigerant through copper tubes. The air mass flow rate must equal the refrigerant mass flow rate. T?F
False
During a throttle process the temperature of an ideal gas will?
Stay the same
Which device converts kinetic energy from a fluid flow to produce increased pressure.
diffuser
A device that adds work to a steady flow of gas to increase its pressure significantly is a?
Compressor
Air flows steadily and is heated essentially at constant pressure through a pipe that is heated by a furnace, as shown to the right. What happens to the mass flow rate of air as it flows through the pipe?
mass flow rate remains the same.
The purpose of a nozzle is to?
convert high pressure fluid to high velocity fluid
If a process is steady state, steady flow, the sum of mass flow rates into the system equals the sum of the mass flow rates out of the system. T/F
True
A cyclic device that takes in heat from a high temperature source, rejects heat to a low temperature source, and preforms useful work is a?
heat engine
The temperature of a thermal reservoir can be easily changed
False
A heat engine thermal efficiency of 100% satisfies the first law
True
A heat engine thermal efficiency of 100% satisfies the Second Law.
False