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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the atmospheric pressure.

Lower than
Equal to
None of these
Higher than

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Steam Boilers, Engines, Nozzles and Turbines
The safety valve at superheater as compared to drum safety valve setting is set at

Higher value
Any value
Same value
Lower value

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are limited to a maximum working pressure of

17 MN/m²
1.7 MN/m²
0.17 MN/m²
170 MN/m²

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Steam Boilers, Engines, Nozzles and Turbines
The clearance in the engine cylinder

All of these
Increases the mean effective pressure
Decreases the efficiency of the engine
Increases the workdone

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Steam Boilers, Engines, Nozzles and Turbines
The major axis of elliptical manholes on the shell should be provided

Longitudinally
On dished end
Circumferentially
Anywhere

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off governing as compared to throttle governing is

Less efficient and more economical
More efficient and more economical
More efficient and less economical
Less efficient and less economical

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