MCQOPTIONS
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MCQOPTIONS
This section includes 26 Mcqs, each offering curated multiple-choice questions to sharpen your Power Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Read the following statements about coals. I. Lignite coals can be used in thermal power plants II. Super-anthracite coal are best for thermal power plants |
| A. | Only I is correct |
| B. | Only II is correct |
| C. | I and II are correct |
| D. | I and II are incorrect |
| Answer» B. Only II is correct | |
| 2. |
The selection of coal for power plant does not depends on _________ |
| A. | Calorific value |
| B. | Nitrogen content |
| C. | Sulphur content |
| D. | Grindability index |
| Answer» C. Sulphur content | |
| 3. |
Grindability of coal should be low. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Read the below statements. I. Sulphur is one of the combustible elements II. The Sulphur content of coal should be less than 1% |
| A. | Only I is correct |
| B. | Only II is correct |
| C. | I and II are correct |
| D. | I and II are incorrect |
| Answer» D. I and II are incorrect | |
| 5. |
NORMAL_HEPTANE?$ |
| A. | accelerates auto-ignition |
| B. | helps to resist auto-ignition |
| C. | does not affect auto-ignition |
| D. | none of the mentioned |
| Answer» B. helps to resist auto-ignition | |
| 6. |
THE_SELECTION_OF_COAL_FOR_POWER_PLANT_DOES_NOT_DEPENDS_ON__________?$ |
| A. | Calorific value |
| B. | Nitrogen content |
| C. | Sulphur content |
| D. | Grindability index |
| Answer» C. Sulphur content | |
| 7. |
Polymerization is a chemical process in which molecules of a compound become$ |
| A. | larger |
| B. | smaller |
| C. | liquid |
| D. | gaseous |
| Answer» B. smaller | |
| 8. |
Which_of_the_following_is_the_lightest_and_most_volatile_liquid_fuel?$ |
| A. | diesel |
| B. | petrol |
| C. | gasoline |
| D. | fuel oil |
| Answer» D. fuel oil | |
| 9. |
Read_the_following_statements_about_coals.$ |
| A. | |
| B. | |
| Answer» B. | |
| 10. |
Gaseous fuel guarantees are based on |
| A. | calorific value of oil |
| B. | low heat value of oil |
| C. | mean heat value of oil |
| D. | none of the mentioned |
| Answer» C. mean heat value of oil | |
| 11. |
When crude oil is heated, then which of the following hydrocarbon is given off first. |
| A. | kerosene |
| B. | gasoline |
| C. | paraffin |
| D. | natural gas |
| Answer» E. | |
| 12. |
In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of |
| A. | 250ºC |
| B. | 500ºC |
| C. | 1000ºC |
| D. | 1500ºC |
| Answer» D. 1500¬¨¬®‚Äö√†¬¥C | |
| 13. |
Ethyl fluid is use? |
| A. | to increase the octane rating of the fuel |
| B. | to increase the cetane rating of the fuel |
| C. | as a defrosting agent |
| D. | none of the mentioned |
| Answer» B. to increase the cetane rating of the fuel | |
| 14. |
Grindability of coal should be low? |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
Cetane |
| A. | has zero cetane number |
| B. | has 100 cetane number |
| C. | helps detonation |
| D. | is a straight chain paraffin |
| Answer» E. | |
| 16. |
A minimum of 4 to 6 percent of ash is required in coal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
Octane number is determined by comparing the performance of the petrol with the following hydro-carbons |
| A. | iso-octane |
| B. | mixture of normal heptane and iso octane |
| C. | alpha methyl napthalene |
| D. | none of the mentioned |
| Answer» C. alpha methyl napthalene | |
| 18. |
What is the main drawback of liquid fuel in thermal power plant? |
| A. | High handling cost |
| B. | Hard and Adhesive oil slag |
| C. | Difficult to store |
| D. | High cost of liquid fuel |
| Answer» E. | |
| 19. |
Iso-octane |
| A. | has octane number of 0 |
| B. | has octane number of 50 |
| C. | has octane number of 100 |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 20. |
Which of the following coal has highest enthalpy of combustion? |
| A. | Peat coal |
| B. | Sami-bituminous coal |
| C. | Semi-anthracite coal |
| D. | Lignite coal |
| Answer» C. Semi-anthracite coal | |
| 21. |
Self-ignition temperature of petrol is of the order of |
| A. | 150ºC |
| B. | 240ºC |
| C. | 370ºC |
| D. | more than 500ºC |
| Answer» E. | |
| 22. |
Which of the following coal has highest moisture content? |
| A. | Sub-bituminous coal |
| B. | Bituminous coal |
| C. | Anthracite coal |
| D. | Peat coal |
| Answer» E. | |
| 23. |
Kerosene is distilled at |
| A. | 30-65ºC |
| B. | 65-220ºC |
| C. | 220-350ºC |
| D. | 350-450ºC |
| Answer» D. 350-450¬¨¬®‚Äö√†¬¥C | |
| 24. |
Petrol is distilled at a temperature in range of |
| A. | 30-65ºC |
| B. | 65-220ºC |
| C. | 220-350ºC |
| D. | 350-450ºC |
| Answer» C. 220-350¬¨¬®‚Äö√†¬¥C | |
| 25. |
Which of the following is most suitable fuel for thermal power plant? |
| A. | Peat coal |
| B. | Lignite coal |
| C. | Bituminous coal |
| D. | Anthracite coal |
| Answer» D. Anthracite coal | |
| 26. |
Which of the following is correct arrangement of different types of coals according to their increasing carbon content? |
| A. | Peat, bituminous, lignite, anthracite |
| B. | Peat, lignite, bituminous, anthracite |
| C. | Bituminous, peat, lignite, anthracite |
| D. | Peat, anthracite, bituminous, lignite |
| Answer» C. Bituminous, peat, lignite, anthracite | |