| 1. | The amount of water evaporated in kg per kg of fuel burnt is called ? | |
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evaporative capacity of a boiler
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equivalent evaporation from and at 100° C
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boiler efficiency
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none of these
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Report Question| 2. | An air preheater ? | |
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increases evaporative capacity of the boiler
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increases the efficiency of the boiler
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enables low grade fuel to be burnt
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all of the above
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| 3. | Benson boiler requires ? | |
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no drum
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one drum
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two drums
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three drums
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| 4. | In a Tandem type compound engine, the high pressure and low pressure cylinders ? | |
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have common piston rod
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are set at 90?
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have separate piston rods
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are set in V-arrangement
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| 5. | In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of ? | |
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10 atmospheres
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20 atmospheres
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30 atmospheres
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40 atmospheres
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| 6. | Which of the following statement is correct ? | |
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A horizontal steam engine requires less floor area than a vertical steam engine
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The steam pressure in the cylinder is not allowed to fall below the atmospheric pressure
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The compound steam engines are generally non-condensing steam engines
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all of the above
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| 7. | The draught produced by a steam jet issuing from a nozzle placed in the chimney is called ? | |
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induced steam jet draught
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chimney draught
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forced steam jet draught
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none of these
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| 8. | The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as ? | |
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equivalent evaporation
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factor of evaporation
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boiler efficiency
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power of a boiler
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| 9. | A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 180° to each other, is called ? | |
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receiver type compound engine
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Tandem type compound engine
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Woolf type compound engine
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both (a) and (b)
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| 10. | The actual power supplied by the engine crankshaft is called ? | |
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indicated power
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brake power
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frictional power
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none of these
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