MCQOPTIONS
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MCQOPTIONS
This section includes 27 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the rate of steam produced in Benson boiler? |
| A. | 250 tonnes/h |
| B. | 175 tonnes/h |
| C. | 100 tonnes/h |
| D. | 135 tonnes/h |
| Answer» E. | |
| 2. |
What is the function of a safety valve? |
| A. | to indicate the water level inside the boiler to an observer |
| B. | to measure pressure of steam inside the steam boiler |
| C. | to blow off steam when the pressure of steam inside the boiler exceeds the working pressure |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 3. |
What is the average operating pressure of Benson boiler? |
| A. | 200 bar |
| B. | 150 bar |
| C. | 250 bar |
| D. | 100 bar |
| Answer» C. 250 bar | |
| 4. |
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod is called __________ |
| A. | Tandem type compound engine |
| B. | Woolf type compound engine |
| C. | Receiver type compound engine |
| D. | None of the mentioned |
| Answer» B. Woolf type compound engine | |
| 5. |
Besides mean effective pressure, the data required to determine the indicated power of an engine include __________ |
| A. | piston diameter, length of stroke and calorific value of fuel |
| B. | piston diameter, specific fuel consumption and Calorific value of fuel |
| C. | piston diameter, length of stroke and speed of rotation |
| D. | specific fuel consumption, speed of rotation and torque |
| Answer» D. specific fuel consumption, speed of rotation and torque | |
| 6. |
The diameter of Cornish boiler varies from __________ |
| A. | 1 to 2m |
| B. | 0.5 to 1m |
| C. | 1.25 to 2.5m |
| D. | 2 to 3m |
| Answer» B. 0.5 to 1m | |
| 7. |
The power of a boiler may be defined as __________ |
| A. | the amount of water evaporated or steam produced in kg per kg of fuel burnt |
| B. | the ratio of heat actually used in producing the steam to the heat liberated in the furnace |
| C. | the evaporation of 15.653 kg of water per hour from and at 100° C |
| D. | the amount of water evaporated from and at 100° C into dry and saturated steam |
| Answer» B. the ratio of heat actually used in producing the steam to the heat liberated in the furnace | |
| 8. |
A safety valve mainly used with locomotive and marine boilers is __________ |
| A. | lever safety valve |
| B. | dead weight safety valve |
| C. | spring loaded safety valve |
| D. | high steam and low water safety valve |
| Answer» D. high steam and low water safety valve | |
| 9. |
In a uniflow engine __________ |
| A. | steam enters and exhausts through the same port |
| B. | steam enters at one end and exhausts at the centre |
| C. | steam enters at the centre and exhausts at the other end |
| D. | none of the mentioned |
| Answer» C. steam enters at the centre and exhausts at the other end | |
| 10. |
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose is known as __________ |
| A. | air preheater |
| B. | superheater |
| C. | injector |
| D. | none of the mentioned |
| Answer» B. superheater | |
| 11. |
Cut-off governing of steam engines is a method of controlling the engine output by varying __________ |
| A. | volume of intake steam |
| B. | pressure of intake steam |
| C. | temperature of intake steam |
| D. | all of the mentioned |
| Answer» B. pressure of intake steam | |
| 12. |
A single acting steam engine produces __________ power than that of double acting steam engine. |
| A. | equal |
| B. | double |
| C. | half |
| D. | 4 times |
| Answer» D. 4 times | |
| 13. |
When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as _____________ |
| A. | forced circulation boiler |
| B. | externally fired boiler |
| C. | naturally circulation boiler |
| D. | internally fired boiler |
| Answer» B. externally fired boiler | |
| 14. |
THE_DIAMETER_OF_CORNISH_BOILER_VARIES_FROM?$ |
| A. | 1 to 2m |
| B. | 0.5 to 1m |
| C. | 1.25 to 2.5m |
| D. | 2 to 3m |
| Answer» B. 0.5 to 1m | |
| 15. |
WHICH_OF_THE_FOLLOWING_BOILER_IS_BEST_SUITED_TO_MEET_THE_FLUCTUATING_DEMAND_OF_STEAM??$ |
| A. | Cornish boiler |
| B. | Lancashire boiler |
| C. | Locomotive boiler |
| D. | Babcock & Wilcox boiler |
| Answer» D. Babcock & Wilcox boiler | |
| 16. |
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called$ |
| A. | Tandem type compound engine |
| B. | Woolf type compound engine |
| C. | Receiver type compound engine |
| D. | None of the mentioned |
| Answer» B. Woolf type compound engine | |
| 17. |
Besides mean effective pressure, the data required to determine the indicated power of an engine include$ |
| A. | piston diameter, length of stroke and calorific value of fuel |
| B. | piston diameter, specific fuel consumption and Calorific value of fuel |
| C. | piston diameter, length of stroke and speed of rotation |
| D. | specific fuel consumption, speed of rotation and torque |
| Answer» D. specific fuel consumption, speed of rotation and torque | |
| 18. |
The rate of steam produced in Benson boiler is |
| A. | 250 tonnes/h |
| B. | 175 tonnes/h |
| C. | 100 tonnes/h |
| D. | 135 tonnes/h |
| Answer» E. | |
| 19. |
The function of a safety valve is |
| A. | to indicate the water level inside the boiler to an observer |
| B. | to measure pressure of steam inside the steam boiler |
| C. | to blow off steam when the pressure of steam inside the boiler exceeds the working pressure |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 20. |
The average operating pressure of Benson boiler is |
| A. | 200 bar |
| B. | 150 bar |
| C. | 250 bar |
| D. | 100 bar |
| Answer» C. 250 bar | |
| 21. |
The power of a boiler may be defined a? |
| A. | the amount of water evaporated or steam produced in kg per kg of fuel burnt |
| B. | the ratio of heat actually used in producing the steam to the heat liberated in the furnace |
| C. | the evaporation of 15.653 kg of water per hour from and at 100° C |
| D. | the amount of water evaporated from and at 100° C into dry and saturated steam |
| Answer» B. the ratio of heat actually used in producing the steam to the heat liberated in the furnace | |
| 22. |
A safety valve mainly used with locomotive and marine boilers is |
| A. | lever safety valve |
| B. | dead weight safety valve |
| C. | spring loaded safety valve |
| D. | high steam and low water safety valve |
| Answer» D. high steam and low water safety valve | |
| 23. |
In a uniflow engine |
| A. | steam enters and exhausts through the same port |
| B. | steam enters at one end and exhausts at the centre |
| C. | steam enters at the centre and exhausts at the other end |
| D. | none of the mentioned |
| Answer» C. steam enters at the centre and exhausts at the other end | |
| 24. |
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as |
| A. | air preheater |
| B. | superheater |
| C. | injector |
| D. | none of the mentioned |
| Answer» B. superheater | |
| 25. |
Cut-off governing of steam engines is a method of controlling the engine output by varying |
| A. | volume of intake steam |
| B. | pressure of intake steam |
| C. | temperature of intake steam |
| D. | all of the mentioned |
| Answer» B. pressure of intake steam | |
| 26. |
A single acting steam engine produces __________ power than that of double acting steam engine |
| A. | equal |
| B. | double |
| C. | half |
| D. | 4 times |
| Answer» D. 4 times | |
| 27. |
When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as |
| A. | forced circulation boiler |
| B. | externally fired boiler |
| C. | naturally circulation boiler |
| D. | internally fired boiler |
| Answer» B. externally fired boiler | |