Steam Boilers and Engines MCQ
Steam Boilers and Engines MCQ
1. In a reciprocating steam engine, the heat energy in the steam is converted into mechanical work by the to and fro motion of the piston.
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2. The power of a boiler may be defined as
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Correct Answer:
The amount of water evaporated or steam produced in kg per kg of fuel burnt
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3. Select the following statement is wrong?
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None of these
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4. An air preheater is installed
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Between the economiser and chimney
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5. Pick Up the following statement is correct?
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A simple vertical boiler has one fire tube.
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6. In water tube boilers
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Water passes through the tubes which are surrounded by flames and hot gases
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7. Which of the following statement is correct?
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All of these
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8. An economiser __________ the steam raising capacity of a boiler.
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Correct Answer:
Increases
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9. Which of the following statement is wrong?
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All of these
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10. The diameter of flue tube in a Cornish boiler is __________ that of the shell.
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Three-fifth
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11. La-mont boiler, is a high pressure water tube steam boiler working on forced circulation.
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12. A safety valve mainly used with locomotive and marine boilers is
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Spring loaded safety valve
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13. The fire tubes in a Cochran boiler are
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Horizontal
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14. Which of the following boiler is best suited to meet the fluctuating demand of steam?
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Locomotive boiler
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15. Fire tube boilers are
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Internally fired
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16. In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to
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Steam space
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17. The rate of steam produced in Benson boiler is
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135 tonnes/h
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18. The object of producing draught in a boiler is
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All of these
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19. A device used to increase the temperature of saturated steam without raising its pressure, is called
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Correct Answer:
Superheater
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20. Which of the following statement is correct for a compound steam engine?
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Correct Answer:
The ratio of expansion is reduced, thus reducing the length of stroke.
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