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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The rate of steam produced in Benson boiler is

250 tonnes/h
175 tonnes/h
100 tonnes/h
135 tonnes/h

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Steam Boilers, Engines, Nozzles and Turbines
An ideal regenerative cycle is

Could be anything
Less than Carnot cycle
Equal to Carnot cycle
More than Carnot cycle

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Steam Boilers, Engines, Nozzles and Turbines
Incomplete combustion can be best judged by

Measuring temperature of flue gases at exit of furnace
Measuring carbon monoxide in flue gases
Excess air in flue gases
Smoky chimney exit

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Steam Boilers, Engines, Nozzles and Turbines
In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

640 m/s
640/3 m/s
160/3 m/s
320/3 m/s

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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.

None of these
More
Equal
Less

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Steam Boilers, Engines, Nozzles and Turbines
The friction present between the steam and the nozzle surfaces reduces the heat drop by

15 to 25%
10 to 15%
40 to 60%
25 to 40%

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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