Thermodynamics Revision
How do you convert degrees celsius to degrees kelvin?
+293.15
-273.15
+273.15
-293.15
Which assumptions can always be made when analysing a nozzle or diffuser:
Adiabatic
No work
No change in potential energy
No change in kinetic energy
The inlet mass flow rate is the same as the exit mass flow rate
Positive work
Negative work
Which assumptions can always be made when analysing a turbine:
Adiabatic
No work
No change in potential energy
No change in kinetic energy
The inlet mass flow rate is the same as the exit mass flow rate
Positive work
Negative work
Which assumptions can always be made when analysing a compressor or pump:
Adiabatic
No work
No change in potential energy
No change in kinetic energy
The inlet mass flow rate is the same as the exit mass flow rate
Positive work
Negative work
Which assumptions can always be made when analysing a throttling valve:
Adiabatic
No work
No change in potential energy
No change in kinetic energy
The inlet mass flow rate is the same as the exit mass flow rate
Positive work
Negative work
What is the difference between a compressor and a pump?
A compressor does work on a gas to change its state and a pump produces work.
A compressor produces work and a pump does work on a gas.
A compressor does work on a gas to change its state and a pump does work on a liquid to change its state.
A compressor does work on a liquid to change its state and a pump does work on a gas to change its state.
A compressor produces work from a liquid and a pump produces work from a gas.
What is the difference between a nozzle and a diffuser?
Nozzles slow fluids down and diffusers speed fluids up.
Nozzles speed fluids up and diffusers slow fluids down.
Nozzles increase the mass flow rate and diffusers decrease it.
Nozzles decrease the mass flow rate and diffusers increase it.
An isentropic process means:
Adiabatic
No work
Constant enthalpy
Constant entropy
Irreversible
Reversible
What cycle is this?
Otto Cycle
Diesel Cycle
Brayton Cycle
Rankine Cycle
Refrigeration Cycle
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