MCQOPTIONS
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MCQOPTIONS
This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant Engg knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The relation between the steam rate of ideal regenerative cycle & steam rate of rankine cycle is? |
| A. | steam rate of ideal regenerative cycle = steam rate of rankine cycle |
| B. | steam rate of ideal regenerative cycle > steam rate of rankine cycle |
| C. | steam rate of ideal regenerative cycle < steam rate of rankine cycle |
| D. | no relation |
| Answer» C. steam rate of ideal regenerative cycle < steam rate of rankine cycle | |
| 2. |
The heat transfer taking place in the turbine is? |
| A. | irreversible |
| B. | reversible |
| C. | irreversible & reversible |
| D. | none of the mentioned |
| Answer» C. irreversible & reversible | |
| 3. |
External Thermal Irreversibility can be removed by which of the following process? |
| A. | Reheat |
| B. | Regeneration |
| C. | Pre-heat |
| D. | None of the mentioned |
| Answer» C. Pre-heat | |
| 4. |
THE_HEAT_TRANSFER_TAKING_PLACE_IN_THE_TURBINE_IS??$ |
| A. | irreversible |
| B. | reversible |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» C. both of the mentioned | |
| 5. |
IS_REGENERATIVE_CYCLE_ALONE_USEFUL??$ |
| A. | Yes |
| B. | No |
| C. | may be |
| D. | depends on other factors |
| Answer» B. No | |
| 6. |
The_relation_between_the_steam_rate_of_ideal_regenerative_cycle_&_steam_rate_of_rankine_cycle_is?$ |
| A. | steam rate of ideal regenerative cycle = steam rate of rankine cycle |
| B. | steam rate of ideal regenerative cycle > steam rate of rankine cycle |
| C. | steam rate of ideal regenerative cycle < steam rate of rankine cycle |
| D. | no relation |
| Answer» C. steam rate of ideal regenerative cycle < steam rate of rankine cycle | |
| 7. |
Function_of_surge_tank?$ |
| A. | Regulation of water pressure |
| B. | Regulation of steam pressure |
| C. | Storage |
| D. | Regulation of lubricants |
| Answer» B. Regulation of steam pressure | |
| 8. |
Heat transfer taking place in the turbine is? |
| A. | from the vapour to the condensate |
| B. | from the condensate to the vapour |
| C. | no heat transfer |
| D. | none of the mentioned |
| Answer» B. from the condensate to the vapour | |
| 9. |
What is the use of draft tube? |
| A. | To regain kinetic energy |
| B. | To regain potential energy |
| C. | Passage for water |
| D. | Stores energy |
| Answer» B. To regain potential energy | |
| 10. |
What is the relation between efficiencies of Carnot cycle & the ideal Sterling Engine? |
| A. | Both are equal |
| B. | Carnot cycle efficiency > Efficiency of Sterling Engine |
| C. | Carnot cycle efficiency < Efficiency of Sterling Engine |
| D. | No relation between Carnot cycle efficiency & efficiency of Sterling Engine |
| Answer» B. Carnot cycle efficiency > Efficiency of Sterling Engine | |
| 11. |
What is the function of Fore bay? |
| A. | Temporary water storage |
| B. | Steam passage |
| C. | Water flow in penstock |
| D. | condensate storage |
| Answer» B. Steam passage | |
| 12. |
What is the use of surge tank? |
| A. | To store condensate |
| B. | To prevent surging |
| C. | To provide better regulation of water pressure in the system |
| D. | To prevent chocking |
| Answer» D. To prevent chocking | |
| 13. |
The product of cycle efficiency & heat input is given by which of the following relations? |
| A. | Wt – WP |
| B. | Wt x WP |
| C. | Wt / WP |
| D. | none of the mentioned |
| Answer» B. Wt x WP | |
| 14. |
Why trash rack is used? |
| A. | To prevent the entry of debris |
| B. | To prevent steam overflow |
| C. | It is used as an insulter |
| D. | Prevents back flow |
| Answer» B. To prevent steam overflow | |
| 15. |
The product of Steam rate & the difference of work done between turbine & pump, when the steam rate is expressed in kg/kWh is equal to? |
| A. | 36 |
| B. | 60 |
| C. | 360 |
| D. | 3600 |
| Answer» E. | |
| 16. |
Name the coolants commonly used for fast breeder reactors? |
| A. | Liquid metal (Na (or) Na K) |
| B. | Helium (He) |
| C. | Carbon dioxide |
| D. | All of the mentioned |
| Answer» E. | |
| 17. |
What is the relation between energy gain of feedwater & energy given off by vapour in condensation? |
| A. | energy gain of feedwater > energy given off by vapour in condensation |
| B. | energy gain of feedwater < energy given off by vapour in condensation |
| C. | energy gain of feedwater = energy given off by vapour in condensation |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 18. |
Mean temperature of heat addition is _______ due to Regeneration |
| A. | Decreases |
| B. | not effected |
| C. | Increases |
| D. | varied exponentially |
| Answer» D. varied exponentially | |
| 19. |
When is the relation between mean temperature of heat addition (T) with regeneration & without regeneration? |
| A. | (T)with regeneration is independent of(t)without regeneration |
| B. | (T)with regeneration > (t)without regeneration |
| C. | (T)with regeneration < (t)without regeneration |
| D. | (T)with regeneration = (t)without regeneration |
| Answer» C. (T)with regeneration < (t)without regeneration | |
| 20. |
Ideal regenerative rankine cycle |
| A. | Increases efficiency |
| B. | Increases work output |
| C. | Increases the heat supplied |
| D. | does not effect efficiency |
| Answer» B. Increases work output | |
| 21. |
What is the basic principle of regeneration? |
| A. | Steam after coming out of condenser is circulated to boiler |
| B. | Steam after coming out of condenser is circulated to turbine |
| C. | |
| Answer» C. | |