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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A safety valve mainly used with locomotive and marine boilers is

High steam and low water safety valve
Spring loaded safety valve
Lever safety valve
Dead weight safety valve

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially wet steam is

0.577
0.601
0.582
0.546

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

pa = pm + K
pa = pm/K
pa = pm × K
pa = K/pm

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of Cornish boiler is of the order of

1.52.5 m
2.53.5 m
23 m
12 m

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Steam Boilers, Engines, Nozzles and Turbines
Hygrometry deals with the

Hygroscopic substances
Water vapor in air
Temperature of air
Pressure of air

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Steam Boilers, Engines, Nozzles and Turbines
The maximum steam pressure in a Locomotive boiler is limited to

0.18 MN/m²
18 MN/m²
180 MN/m²
1.8 MN/m²

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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