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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The average value of diagram factor lies between

0.8 to 1.2
0.2 to 0.5
0.65 to 0.9
0.5 to 0.65

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?

The efficiency of steam turbine is higher
All of these
A steam turbine develops higher speeds
The steam consumption is less

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Steam Boilers, Engines, Nozzles and Turbines
The number of water level indicators in a boiler are generally __________ in number.

Four
Two
Three
One

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Steam Boilers, Engines, Nozzles and Turbines
Which is not correct statement about pulverized fuel firing?

Fuel burns economically
High burning rate is possible
It is the best technique for burning high ash content fuel having low fusion ash
Heat release can be easily controlled

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Steam Boilers, Engines, Nozzles and Turbines
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.

Less than
Equal to
More than
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler

Remain unaffected
Increases
Decreases
First increases and then decreases

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