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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The fusible plug in small boilers is located

Above steam dome
Over the combustion chamber
In the fire tubes
In the drum

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

Vb = 0.5 V² cosα
Vb = 0.5 V cosα
Vb = V² cosα
Vb = V cosα

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Steam Boilers, Engines, Nozzles and Turbines
The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop

Is unpredictable
Decreases
Remains the same
Increases

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Steam Boilers, Engines, Nozzles and Turbines
The value of the reheat factor varies from

1.2 to 1.6
1.02 to 1.06
1.6 to 2
1.08 to 1.10

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Steam Boilers, Engines, Nozzles and Turbines
The turbine blades are

None of these
Curved
Straight
Circular

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Steam Boilers, Engines, Nozzles and Turbines
Mechanical equivalent of heat for 1 kcal or Joule's equivalent is equal to

421 kg.m
539 kg.m
421 kg.m
102 kg.m

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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