Steam Boilers, Engines, Nozzles and Turbines
The three "Ts" for good combustion are

Thorough mixing, total air and temperature
Total air, true fuel, and turbulence
Temperature, time, and turbulence
Total air, time, and temperature

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Steam Boilers, Engines, Nozzles and Turbines
The function of a piston rod is

To convert heat energy of the steam into mechanical work
To transfer motion from the piston to the cross head
To exhaust steam from the cylinder at proper moment
To guide motion of the piston rod and to prevent it from bending

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Steam Boilers, Engines, Nozzles and Turbines
The function of a safety valve is

None of these
To measure pressure of steam inside the steam boiler
To blow off steam when the pressure of steam inside the boiler exceeds the working pressure
To indicate the water level inside the boiler to an observer

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