| 1. | In a boiler, the heat is lost ? | |
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to dry flue gases
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in moisture present in the fuel
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to steam formed by combustion of hydrogen per kg of fuel
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all of the above
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Report Question| 2. | A condenser where circulating water flows through tubes which are surrounded by steam, in known as ? | |
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surface condenser
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jet condenser
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barometric condenser
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evaporative condenser
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| 3. | A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as ? | |
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blow off cock
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fusible plug
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superheater
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stop valve
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| 4. | The actual power generated in the engine cylinder 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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| 5. | The efficiency of a boiler is defined as ? | |
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ratio of heat actually used in producing steam to the heat liberated in the furnace
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ratio of the mass of steam produced to the mass of total water supplied in a given time
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ratio of the heat liberated in the furnace to the heat actually used in producing steam
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none of the above
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| 6. | Locomotive boiler is a ? | |
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single tube, horizontal, internally fired and stationary boiler
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single tube, vertical, externally fired and stationary boiler
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multitubular, horizontal, internally fired and mobile boiler
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multitubular, horizontal, externally fired and stationary boiler
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| 7. | The draught produced by a steam jet issuing from a nozzle placed in the ashpit under the fire grate of the furnace 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. | Which of the following is not a boiler mounting ? | |
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Blow off cock
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Feed check
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Economiser
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Fusible plug
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| 9. | The actual vacuum in a condenser is equal to ? | |
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barometric pressure + actual pressure
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barometric pressure - actual pressure
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gauge pressure + atmospheric pressure
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gauge pressure - atmospheric pressure
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| 10. | The length of Cornish boiler varies from ? | |
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2 to 4.5 m
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3 to 5 m
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5 to 7.5 m
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7 to 9 m
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