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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
When the nozzle operates with the maximum mass flow, the nozzle is said to be

Choked
Under-damping
Over-damping
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Locomotive boiler has __________ diameter.

47.5 mm
7.45 mm
4.75 mm
5.47 mm

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is a water tube boiler?

Lancashire boiler
Babcock and Wilcox boiler
Cochran boiler
Locomotive boiler

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Steam Boilers, Engines, Nozzles and Turbines
The reheat factor depends upon

Exit pressure
Turbine stage efficiency
Initial pressure and superheat
All of these

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Steam Boilers, Engines, Nozzles and Turbines
De-Laval turbines are mostly used

For large power purposes
Where low speeds are required
For small power purposes and high speeds
For small power purposes and low speeds

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following boiler is best suited to meet the fluctuating demand of steam?

Cornish boiler
Locomotive boiler
Lancashire boiler
Babcock and Wilcox boiler

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