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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The diameter of Cornish boiler is of the order of

23 m
12 m
2.53.5 m
1.52.5 m

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Steam Boilers, Engines, Nozzles and Turbines
Green coal, in order to be burnt, must be

Heated to its ignition point
Heated sufficiently
Burnt as powder
Burnt in excess air

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Steam Boilers, Engines, Nozzles and Turbines
For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be

Two times the height of chimney
Four times the height of chimney
Equal to the height of chimney
One-half the height of chimney

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Steam Boilers, Engines, Nozzles and Turbines
A binary vapor plant consists of

All of the listed here
Mercury boiler
Steam turbine
Steam condenser

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Steam Boilers, Engines, Nozzles and Turbines
The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be

0.67
0.4
1.67
0.56

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

Choked
Over-damping
Under-damping
None of these

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