| 1. | The shell of the Cochran boiler is made hemispherical ? | |
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to give maximum space and strength
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to withstand the pressure of steam inside the boiler
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both (a) and (b)
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none of the above
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Report Question| 2. | Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler ? | |
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Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
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Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler
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Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes
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Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
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| 3. | The cylinder condensation or missing quantity may be reduced by ? | |
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the efficient steam jacketing of the cylinder walls
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super heating the steam supplied to the engine cylinder
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keeping the expansion ratio small in each cylinder
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all of the above
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| 4. | Which of the following statement is wrong ? | |
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Locomotive boiler is a water tube boiler
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Water tube boilers are internally fired
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La-mont boiler is a low pressure water tube boiler
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all of the above
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| 5. | The diameter of superheated tubes in a locomotive boiler is ? | |
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13 mm
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31 mm
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130mm
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230 mm
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| 6. | Which of the following statement is correct for a compound steam engines ? | |
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The cost of the engine, for the same power and economy, is more than that of a simple steam engine
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The forces in the working parts are increased as the forces are distributed over more parts
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The ratio of expansion is reduced, thus reducing the length of stroke
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The temperature range per cylinder is increased, with corresponding increase in condensation
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| 7. | The artificial draught is produced by ? | |
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steam jet
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centrifugal fan
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chimney
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both (a) and (b)
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| 8. | Which of the following are boiler accessories ? | |
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economiser
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superheater
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both (a) and (b)
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none of these
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| 9. | The ratio of the actual vacuum to the ideal vacuum in a condenser is called ? | |
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condenser efficiency
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vacuum efficiency
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nozzle efficiency
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boiler efficiency
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| 10. | The length of shell of a Locomotive boiler is ? | |
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1m
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2m
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3m
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4m
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