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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The maximum heat loss is a boiler occurs due to

Unburnt carbon
Dry flue gases
Moisture in fuel
Steam formation

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

Efficiency of the chimney
Power of the boiler
Efficiency of the fan
Efficiency of the boiler

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Steam Boilers, Engines, Nozzles and Turbines
In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as

100°C and normal atmospheric pressure
50°C and normal atmospheric pressure
50°C and 1.1 bar pressure
100°C and 1.1 bar pressure

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Steam Boilers, Engines, Nozzles and Turbines
When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a

High speed steam engine
Slow speed engine
Medium speed steam engine
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The discharge is __________ at critical pressure.

Minimum
None of these
Zero
Maximum

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Steam Boilers, Engines, Nozzles and Turbines
1 kg.m is equal to

9.81 Joules
427 Joules
None of these
102 Joules

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