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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The chimney draught varies with

All of these
Climatic conditions
Temperature of furnace gases
Height of chimney

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Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge of steam through a convergent-divergent nozzle depends upon

Initial pressure and volume of steam
Both (A) and (B)
Final pressure of steam leaving the nozzle
Area of nozzle at throat

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off ratio is the ratio of

Volume at cut-off to the clearance volume
Volume at cut-off to the swept volume
Swept volume to the volume at cut-off
Clearance volume to the volume at cut-off

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Steam Boilers, Engines, Nozzles and Turbines
The draught produced by a steam jet issuing from a nozzle placed in the chimney is called

None of these
Induced steam jet draught
Chimney draught
Forced steam jet draught

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Steam Boilers, Engines, Nozzles and Turbines
The actual vacuum in a condenser is equal to

Barometric pressure + actual pressure
Barometric pressure - actual pressure
Gauge pressure - atmospheric pressure
Gauge pressure + atmospheric pressure

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are limited to a maximum working pressure of

0.17 MN/m²
170 MN/m²
1.7 MN/m²
17 MN/m²

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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