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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The specific heat of superheated steam in kcal/kg is generally of the order of

0.1
0.5
0.8
0.3

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following boilers is best suited to meet fluctuating demands?

Cochran
Lancashire
Babcock and Wilcox
Locomotive

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Steam Boilers, Engines, Nozzles and Turbines
The bituminous coal is no caking if its carbon content is

85-90%
90-95%
78-81%
81-85%

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Steam Boilers, Engines, Nozzles and Turbines
An economiser is generally placed between

Air preheater and chimney
Induced draft fan and forced draft fan
Last superheater or reheater and air preheater
None of these

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.

Equal
Less
More
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The aim of a compound steam engine is

To reduce the temperature range in each cylinder
To reduce the length of stroke
To reduce the ratio of expansion in each cylinder
All of these

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