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

To indicate the water level inside the boiler to an observer
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

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Steam Boilers, Engines, Nozzles and Turbines
The equivalent evaporation is defined as

The amount of water evaporated from and at 100°C into dry and saturated steam
The amount of water evaporated or steam produced in kg per kg of fuel burnt
The evaporation of 15.653 kg of water per hour from and at 100°C
The ratio of heat actually used in producing the steam to the heat liberated in the furnace

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

To provide simple harmonic motion to the D-slide valve
To provide reciprocating motion to the slide valve
To convert rotary motion of the crankshaft into to and fro motion of the valve rod
To convert reciprocating motion of the piston into rotary motion of the crank

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Steam Boilers, Engines, Nozzles and Turbines
Besides mean effective pressure, the data required to determine the indicated power of an engine include

Specific fuel consumption, speed of rotation and torque
Piston diameter, length of stroke and calorific value of fuel
Piston diameter, specific fuel consumption and Calorific value of fuel
Piston diameter, length of stroke and speed of rotation

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