STEAM BOILERS, ENGINES, NOZZLES AND TURBINES QUIZ

2 to 4 m

1.75 to 2.75 m

1 to 1.75 m

1 to 1.25 m

Raising of steam temperature

Fouling of heat transfer surfaces

High calorific value coal being burnt

Higher effectiveness of boiler

Pressure compounded turbine

Simple reaction turbine

Pressure-velocity compounded turbine

Velocity compounded turbine

Steam temperature remains constant

Steam pressure remains constant

Steam entropy remains constant

Steam enthalpy remains constant

Atmospheric temperature

950-1100°C

700-850°C

500-600°C

Equals 760 mm of mercury

Equals to atmospheric pressure

Equals the pressure of water in the container

Equals that of the surroundings

Natural circulation boiler

Forced circulation boiler

Externally fired boiler

Internally fired boiler

Blade velocity coefficient is unity

Blade solidity is 0.65

Blades are equiangular

Blades are equiangular and frictionless

Vb = V cos α

Vb = V² cos α

Vb = 0.5 V² cosα

Vb = 0.5 V cosα

To draw water

To drain off the water

To circulate water

All of these