STEAM BOILERS, ENGINES, NOZZLES AND TURBINES QUIZ

1/(I.P)²

I.P.

(I.P.)²

1/(I.P)

1.8 MN/m²

0.18 MN/m²

180 MN/m²

18 MN/m²

1 to 2 m

1.25 to 2.25 m

1.75 to 2.75 m

1.5 to 2.5 m

1 kg/cm² and 100°C

218 kg/cm² abs and 373°C

218 kg/cm² abs and 540°C

100 kg/cm² and 540°C

1 kg/cm²

10 kg/cm²

18 kg/cm²

5 kg/cm²

Medium pressures

Atmospheric pressures

Very low pressure

Very high pressures

All of these

To determine the generating capacity of the boiler

To determine the thermal efficiency of the boiler when working at a definite pressure

To prepare heat balance sheet for the boiler

To keep the engine speed uniform at all load conditions

To convert rotary motion of the crankshaft into to and fro motion of the valve rod

To prevent fluctuation of speed

To convert reciprocating motion of the piston into rotary motion

The steam is expanded both in fixed and moving blades continuously

The pressure and temperature of steam remains constant

The steam is expanded in nozzles only and there is a pressure drop and heat drop

The steam is expanded in moving blades only

I.P. = a × m + b

I.P. = b × m + a

m = (b/I.P.) - a

m = a + b × I.P.