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 aim of a compound steam engine? |
| A. | to reduce the ratio of expansion in each cylinder |
| B. | to reduce the temperature range in each cylinder |
| C. | to reduce the length of stroke |
| D. | all of the mentioned |
| Answer» B. to reduce the temperature range in each cylinder | |
| 2. |
Throttle governing of steam engines is a method of controlling the engine output by varying ___________ |
| A. | volume of intake steam |
| B. | pressure of intake system |
| C. | temperature of intake system |
| D. | none of the mentioned |
| Answer» C. temperature of intake system | |
| 3. |
The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks at ___________ |
| A. | 180° to each other |
| B. | 90° to each other |
| C. | 0° to each other |
| D. | none of the mentioned |
| Answer» C. 0° to each other | |
| 4. |
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? |
| A. | fusible plug |
| B. | superheater |
| C. | stop valve |
| D. | blow off cork |
| Answer» D. blow off cork | |
| 5. |
In a Tandem type compound engine, the high pressure and low pressure cylinders ___________ |
| A. | have common piston rods |
| B. | have separate piston rods |
| C. | are set at 90 degrees |
| D. | are set in V-arrangement |
| Answer» B. have separate piston rods | |
| 6. |
The cylinder condensation or missing quantity may be reduced by ___________ |
| A. | keeping the expansion ratio small in each cylinder |
| B. | superheating the steam supplied to the engine cylinder |
| C. | the efficient steam jacketing of the cylinder walls |
| D. | all of the mentioned |
| Answer» E. | |
| 7. |
Benson boiler requires ___________ |
| A. | 2 drums |
| B. | 3 drums |
| C. | 0 drums |
| D. | 1 drum |
| Answer» D. 1 drum | |
| 8. |
The performance of a boiler is measured by the ___________ |
| A. | dry flue gases |
| B. | steam formation |
| C. | moisture in fuel |
| D. | unburnt carbon |
| Answer» B. steam formation | |
| 9. |
The high steam and low water safety valve is used to blow off steam when the ___________ |
| A. | steam pressure exceeds the working pressure |
| B. | water level in the boiler becomes too low |
| C. | none of the mentioned |
| D. | steam pressure exceeds the working pressure & water level in the boiler becomes too low |
| Answer» E. | |
| 10. |
The actual vacuum in a condenser is equal to ___________ |
| A. | barometric pressure – actual pressure |
| B. | barometric pressure + actual pressure |
| C. | gauge pressure – atmospheric pressure |
| D. | gauge pressure + atmospheric pressure |
| Answer» B. barometric pressure + actual pressure | |
| 11. |
A compound steam engine in which piston rods of high pressure & low pressure cylinders are attached to two different crank sets at 1800 to each other, is called ___________ |
| A. | Tandem type compound engine |
| B. | Receiver type compound engine |
| C. | Woolf type compound engine |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 12. |
The heat balance sheet for the boiler shows the ___________ |
| A. | steam formed by combustion of hydrogen per kg of fuel |
| B. | moisture present in the fuel |
| C. | complete account of heat supplied by 1 kg of dry fuel & the heat consumed |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 13. |
Lancashire boiler is ___________ |
| A. | stationary fire tube boiler |
| B. | horizontal boiler |
| C. | internally fired boiler |
| D. | all of the mentioned |
| Answer» E. | |
| 14. |
THE_CYLINDER_CONDENSATION_OR_MISSING_QUANTITY_MAY_BE_REDUCED_BY?$ |
| A. | keeping the expansion ratio small in each cylinder |
| B. | superheating the steam supplied to the engine cylinder |
| C. | the efficient steam jacketing of the cylinder walls |
| D. | all of the mentioned |
| Answer» E. | |
| 15. |
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$ |
| A. | fusible plug |
| B. | superheater |
| C. | stop valve |
| D. | blow off cork |
| Answer» D. blow off cork | |
| 16. |
In a Tandem type compound engine, the high pressure and low pressure cylinders$ |
| A. | have common piston rods |
| B. | have separate piston rods |
| C. | are set at 90 degrees |
| D. | are set in V-arrangement |
| Answer» B. have separate piston rods | |
| 17. |
The aim of a compound steam engine is |
| A. | to reduce the ratio of expansion in each cylinder |
| B. | to reduce the temperature range in each cylinder |
| C. | to reduce the length of stroke |
| D. | all of the mentioned |
| Answer» B. to reduce the temperature range in each cylinder | |
| 18. |
Throttle governing of steam engines is a method of controlling the engine output by varying |
| A. | volume of intake steam |
| B. | pressure of intake system |
| C. | temperature of intake system |
| D. | none of the mentioned |
| Answer» C. temperature of intake system | |
| 19. |
The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks |
| A. | 180° to each other |
| B. | 90° to each other |
| C. | 0° to each other |
| D. | none of the mentioned |
| Answer» C. 0¬¨¬®‚Äö√†√ª to each other | |
| 20. |
Benson boiler require? |
| A. | 2 drums |
| B. | 3 drums |
| C. | 0 drums |
| D. | 1 drum |
| Answer» D. 1 drum | |
| 21. |
The performance of a boiler is measured by the |
| A. | dry flue gases |
| B. | steam formation |
| C. | moisture in fuel |
| D. | unburnt carbon |
| Answer» B. steam formation | |
| 22. |
The high steam and low water safety valve is used to blow off steam when the |
| A. | steam pressure exceeds the working pressure |
| B. | water level in the boiler becomes too low |
| C. | none of the mentioned |
| D. | both of the mentioned |
| Answer» E. | |
| 23. |
The actual vacuum in a condenser is equal to |
| A. | barometric pressure – actual pressure |
| B. | barometric pressure + actual pressure |
| C. | gauge pressure – atmospheric pressure |
| D. | gauge pressure + atmospheric pressure |
| Answer» B. barometric pressure + actual pressure | |
| 24. |
A compound steam engine in which piston rods of high pressure & low pressure cylinders are attached to two different crank sets at 1800 to each other, is called |
| A. | Tandem type compound engine |
| B. | Receiver type compound engine |
| C. | Woolf type compound engine |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 25. |
The heat balance sheet for the boiler shows the |
| A. | steam formed by combustion of hydrogen per kg of fuel |
| B. | moisture present in the fuel |
| C. | complete account of heat supplied by 1 kg of dry fuel & the heat consumed |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 26. |
Lancashire boiler is? |
| A. | stationary fire tube boiler |
| B. | horizontal boiler |
| C. | internally fired boiler |
| D. | all of the mentioned |
| Answer» E. | |
| 27. |
The relative efficiency is defined as? |
| A. | ratio of thermal efficiency to rankine efficiency |
| B. | ratio of brake power to the indicated power |
| C. | ratio of heat equivalent to indicated power to the energy supplied in steam |
| D. | product of thermal efficiency & Rankine efficiency |
| Answer» B. ratio of brake power to the indicated power | |