MCQOPTIONS
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MCQOPTIONS
This section includes 180 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Large amount of coal is transported by |
| A. | railway |
| B. | sea or river ways |
| C. | road transportation |
| D. | by airlifting |
| Answer» B. sea or river ways | |
| 152. |
What is the role of breaker house in coal feeding? |
| A. | to break the coal into smaller pieces |
| B. | to separate different sizes of coal |
| C. | to separate the light dust from the coal |
| D. | to powder the coal |
| Answer» D. to powder the coal | |
| 153. |
Operating cost of nuclear power plant is less than thermal power plant. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 154. |
With respect to the load centre which location is suitable for stablishment of nuclear power plant? |
| A. | load centre |
| B. | near load centre but at reasonable distance |
| C. | far away from load centre |
| D. | near chemical industries |
| Answer» C. far away from load centre | |
| 155. |
All of the nuclear fuel reserve will be ended in about 400 years. |
| A. | true |
| B. | false |
| Answer» C. | |
| 156. |
The land area required for installation of nuclear power plant is |
| A. | more than thermal power plant |
| B. | less than thermal power plant |
| C. | equel to thermal power plant |
| D. | depends on type of construction |
| Answer» D. depends on type of construction | |
| 157. |
Which of the following are not taken as operation and maintenance cost in economics of nuclear power plant? |
| A. | taxes and insurance |
| B. | salaries and wages of staff |
| C. | cost of waste disposal |
| D. | cost of processing materials |
| Answer» B. salaries and wages of staff | |
| 158. |
What is the overall efficiency of nuclear power plant? |
| A. | 20 to 25% |
| B. | 25 to 30% |
| C. | 30 to 40 % |
| D. | 50 to 70 % |
| Answer» D. 50 to 70 % | |
| 159. |
Cost of nuclear fuel in nuclear power plant economics is considered as |
| A. | running cost |
| B. | maintenance cost |
| C. | capital cost |
| D. | development cost |
| Answer» D. development cost | |
| 160. |
Nuclear fuel in reactor lasts for |
| A. | more than 5 months |
| B. | few weeks |
| C. | few days |
| D. | more than 5 years |
| Answer» E. | |
| 161. |
How much coal is required to generate energy equivalent to the energy generated by 1 kg of uranium? |
| A. | 30000 tonnes of high grade coal |
| B. | 300 tonnes of high grade coal |
| C. | 10000 tonnes of high grade coal |
| D. | 3000 tonnes of high grade coal |
| Answer» E. | |
| 162. |
The best capable alternative source which can meet the future energy demand is |
| A. | thermal power plant |
| B. | nuclear power plant |
| C. | hydroelectric power plant |
| D. | geothermal power plant |
| Answer» C. hydroelectric power plant | |
| 163. |
The input to the low pressure feedwater heater is from? |
| A. | drain heater |
| B. | drain cooler |
| C. | drain pipe |
| D. | none of the mentioned |
| Answer» C. drain pipe | |
| 164. |
What is the critical point of steam generation in a “once through†boiler? |
| A. | 221.5 bar |
| B. | 221.4 bar |
| C. | 221.3 bar |
| D. | 221.2 bar |
| Answer» E. | |
| 165. |
In a typical layout of a 215MW reheat power plant, the feed in the boiler is at? |
| A. | 280 degree centigrade |
| B. | 230 degree centigrade |
| C. | 238 degree centigrade |
| D. | 250 degree centigrade |
| Answer» D. 250 degree centigrade | |
| 166. |
Which of the following needs to be incorporated to prevent the low pressure turbine exhaust wetness from being excessive? |
| A. | double regeneration |
| B. | double carnotization |
| C. | double reheat |
| D. | double cooling |
| Answer» D. double cooling | |
| 167. |
Apart from feedheating, what should a plant have to obtain a gain in thermal efficiency? |
| A. | lubrication |
| B. | differential heating |
| C. | reheating cycles |
| D. | regenerative cycles |
| Answer» D. regenerative cycles | |
| 168. |
Out of the given option choose the advantage that supports fire tube boilers? |
| A. | water circulation is cyclic |
| B. | used as a mobile boiler |
| C. | water circulation is limited inside boiler shell |
| D. | bursting of flue tube does not cause any explosion |
| Answer» D. bursting of flue tube does not cause any explosion | |
| 169. |
Chances of sediments depositing inside the water tubes in the shell is less due to? |
| A. | low working pressure |
| B. | natural circulation of water |
| C. | partial circulation of water |
| D. | high working pressure |
| Answer» E. | |
| 170. |
Which of the given boilers operate above critical pressure? |
| A. | natural circulation boilers |
| B. | forced circulation boilers |
| C. | once-through boilers |
| D. | water tube boilers |
| Answer» D. water tube boilers | |
| 171. |
Which type of boilers are called drum-less boilers? |
| A. | natural circulation boilers |
| B. | fire tube boilers |
| C. | positive forced circulation boiler |
| D. | forced circulation boiler |
| Answer» D. forced circulation boiler | |
| 172. |
What is the steam pressure limit of natural circulation boilers? |
| A. | 650bar |
| B. | 180bar |
| C. | 400bar |
| D. | 550bar |
| Answer» C. 400bar | |
| 173. |
Are boilers defined on the basis of heat source. |
| A. | yes |
| B. | no |
| Answer» B. no | |
| 174. |
Which of these is a mobile boiler? |
| A. | lancashire boiler |
| B. | stirling boiler |
| C. | locomotive boiler |
| D. | cochran boiler |
| Answer» D. cochran boiler | |
| 175. |
Which of these is a stationary boiler? |
| A. | locomotive boiler |
| B. | marine boiler |
| C. | mobile boiler |
| D. | babcock-wilcox boiler |
| Answer» E. | |
| 176. |
Stirling boiler is an example of which type of boiler? |
| A. | inclined tube boilers |
| B. | mobile boiler |
| C. | fire tube boiler |
| D. | water tube boiler |
| Answer» E. | |
| 177. |
Cornish boiler is an example of which type of boiler? |
| A. | fire tube boiler |
| B. | water tube boiler |
| C. | vertical tube boiler |
| D. | externally fired boiler |
| Answer» B. water tube boiler | |
| 178. |
On what basis are fire and water tube boilers are classified? |
| A. | depending the combustion products formed |
| B. | depending the state of fuel |
| C. | depending on the steam formation rate |
| D. | depending tubular heating surface |
| Answer» E. | |
| 179. |
A simple Rankine cycle operates the Boiler at 3 MPa with an outlet temperature of 350°C and the Condenser at 50 kPa. Assuming ideal operation and processes, what is the thermal efficiency of this cycle? |
| A. | 7.7 |
| B. | 17.7 |
| C. | 27.7 |
| D. | 37.7 |
| Answer» D. 37.7 | |
| 180. |
Rankine cycle efficiency of a good Steam |
| A. | 15 to 20% |
| B. | 35 to 45% |
| C. | 70 to 80% |
| D. | 90 to 95% |
| Answer» C. 70 to 80% | |