STEAM BOILERS, ENGINES, NOZZLES AND TURBINES QUIZ

Superheater

None of these

Blow off cock

Stop valve

Increases

Decreases

None of these

Remains constant

None of these

Bleeding

Governing

Reheating

Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam

Feed pump is employed to supplement natural circulation in water wall type furnace

Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum

Water is converted into steam in one pass without any recirculation

0.65 to 0.9

0.2 to 0.5

0.5 to 0.65

0.8 to 1.2

All of the listed here

High steam and low water safety valve

Lever safety valve

Dead weight safety valve

Before the superheater

Before the economiser

Between the economiser and chimney

None of these

For large power purposes

Where low speeds are required

For small power purposes and high speeds

For small power purposes and low speeds

Jet condenser

Barometric condenser

Evaporative condenser

Surface condenser

32.5 mm, 180 mm

24.5 mm, 65 mm

65.5 mm, 210 mm

47.5 mm, 130 mm