MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Batteries used for electrical energy storage are |
| A. | Leclanche cells |
| B. | Edison cells |
| C. | Lead acid cells |
| D. | Any of the above |
| E. | None of the above |
| Answer» D. Any of the above | |
| 2. |
Pin insulators are normally used upto voltages of about |
| A. | 100 kV |
| B. | 66 kV |
| C. | 33 kV |
| D. | 25 kV |
| E. | None of the above |
| Answer» E. None of the above | |
| 3. |
Which of the following gives nearly monochromatic light? |
| A. | Sodium vapour lamp |
| B. | GLS lamp |
| C. | Fluurescent tube |
| D. | Mercury vapour lamp |
| E. | None of the above |
| Answer» B. GLS lamp | |
| 4. |
Gas turbine power plants are being established at all of the following places EXCEPT |
| A. | Kawas |
| B. | Anta |
| C. | Auraiya |
| D. | Jagdishpur |
| E. | None of the above |
| Answer» E. None of the above | |
| 5. |
Steel poles for transmission lines need protection against |
| A. | termites |
| B. | borer |
| C. | corrosion |
| D. | All of the above |
| E. | None of the above |
| Answer» D. All of the above | |
| 6. |
Low grade fuels have |
| A. | Low moisture constant |
| B. | Low ash content |
| C. | Low calorific value |
| D. | Low sulphur content |
| E. | All of the above |
| Answer» D. Low sulphur content | |
| 7. |
The protection against lightning is provided by |
| A. | Earthing screen |
| B. | Overhead ground wires |
| C. | Lightning arresters |
| D. | Surge diverters |
| E. | Any of the above |
| Answer» F. | |
| 8. |
Which of the following converts electrical energy to radiant heat? |
| A. | Solat cell |
| B. | Storage battery |
| C. | Wankel engine |
| D. | Incandescent lamp |
| E. | None of the above |
| Answer» E. None of the above | |
| 9. |
The power supplied to domestic consumers is at 220 volts. This represents |
| A. | Peak value of voltage |
| B. | Mean value of voltage |
| C. | rms value of voltage |
| D. | Any of the above |
| E. | None of the above |
| Answer» D. Any of the above | |
| 10. |
Integrated demand is |
| A. | the demand averaged over a specified period |
| B. | the joint-demand of several consumers |
| C. | supplementary demand of various consumers |
| D. | None of the above |
| E. | None of the above |
| Answer» B. the joint-demand of several consumers | |
| 11. |
Osmotic energy conversion involves energy production from |
| A. | low boiling point liquids |
| B. | low vapour pressure liquids |
| C. | miscible liquids |
| D. | salt water |
| E. | None of the above |
| Answer» E. None of the above | |
| 12. |
In geothermal power plants waste water is |
| A. | recirculated after cooling in cooling towers |
| B. | discharged into sea |
| C. | discharged back to earth |
| D. | evaporated in ponds |
| E. | None of the above |
| Answer» D. evaporated in ponds | |
| 13. |
Barn is |
| A. | spent fuel from a nuclear reactor |
| B. | a unit of area |
| C. | an electronic instrument for rapid counting of radiations |
| D. | a coal that does not form coke |
| E. | None of the above |
| Answer» C. an electronic instrument for rapid counting of radiations | |
| 14. |
Existence of which gs in atmosphere causes green house effect? |
| A. | Carbon dioxide |
| B. | Hydrogen sulphide |
| C. | Nitrogen |
| D. | Hydrogen |
| E. | None of the above |
| Answer» B. Hydrogen sulphide | |
| 15. |
Skin effect results in |
| A. | reduced effective resistance but increased effective internal reactance of the conductor |
| B. | increased effective resistance but reduced effective internal reactance of the conductor |
| C. | reduced effective resistance as well as effective internal reactance |
| D. | increased effective resistance as well as effective internal reactance |
| E. | None of the above |
| Answer» C. reduced effective resistance as well as effective internal reactance | |
| 16. |
Pulverized coal is fed to the boiler through |
| A. | stokers |
| B. | retorts |
| C. | fans |
| D. | burners |
| E. | None of the above |
| Answer» E. None of the above | |
| 17. |
In case the characteristic impedance of the line is equal to the load impedance |
| A. | all the energy will pass to the earth |
| B. | all the energy will be lost in transmission losses |
| C. | the system will resonatc badly |
| D. | all the energy sent will be absorbed by the load |
| E. | None of the above |
| Answer» E. None of the above | |
| 18. |
Which of the following fuel consists almost entirely of fixed carbon and ash? |
| A. | Lignite |
| B. | peat |
| C. | wood charcoal |
| D. | coke |
| E. | None of the above |
| Answer» E. None of the above | |
| 19. |
The total power of a wind stream is proportional to |
| A. | velocity of stream |
| B. | (velocity of stream)2 |
| C. | (velocity of stream)3 |
| D. | None of the above |
| Answer» D. None of the above | |
| 20. |
Fixed carbon in case of bituminous coals is less than |
| A. | 70% |
| B. | 50% |
| C. | 35% |
| D. | 15% |
| E. | None of the above |
| Answer» B. 50% | |
| 21. |
Humacite is the name associated with |
| A. | lignites |
| B. | radioactive minerals |
| C. | bitumins |
| D. | refrigerants |
| E. | None of the above |
| Answer» D. refrigerants | |
| 22. |
Coal broken into angular fragments is known as |
| A. | coal briquettes |
| B. | coal breccia |
| C. | coal bank |
| D. | coal auger |
| E. | None of the above |
| Answer» C. coal bank | |
| 23. |
In solar thermal conversion systems the solar heat is transferred to |
| A. | water - steam |
| B. | liquid metals |
| C. | molten salts |
| D. | any of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 24. |
Turnaround efficiency of battery energy storage system is around |
| A. | 75 percent |
| B. | 50 percent |
| C. | 25 percent |
| D. | 10 percent |
| E. | None of the above |
| Answer» B. 50 percent | |
| 25. |
ACSR conductor implies |
| A. | All conductors surface treated and realigned |
| B. | Anode current sinusoidally run |
| C. | Anodised core smoothly run |
| D. | Aluminium conductor steel reinforced |
| E. | None of the above |
| Answer» E. None of the above | |
| 26. |
For constant voltage transmission, the drop is compensated by installing |
| A. | synchronous motors |
| B. | capacitors |
| C. | inductors |
| D. | All of the above |
| E. | None of the above |
| Answer» B. capacitors | |
| 27. |
First geothermal energy plant in India was tried at |
| A. | Himachal Pradesh |
| B. | Rajasthan |
| C. | Bihar |
| D. | Kerala |
| E. | None of the above |
| Answer» B. Rajasthan | |
| 28. |
The effect of corona can be reduced by |
| A. | Increasing the conductor size and reducing the spacing between the conductors |
| B. | Increasing the conductor size and also by increasing the spacing between the conductors |
| C. | Reducing the conductor size and increasing the spacing between conductors |
| D. | Reducing the conductor size as well as spacing between the conductors |
| E. | None of the above |
| Answer» C. Reducing the conductor size and increasing the spacing between conductors | |
| 29. |
In geopressured systems, when brine is available as the source of energy, the power is generated using |
| A. | heat exhangers |
| B. | exhaust calorimeters |
| C. | economisers |
| D. | steam traps |
| E. | None of the above |
| Answer» B. exhaust calorimeters | |
| 30. |
The minimum clearance of low and medium transmission lines from ground across streets is |
| A. | 2 metres |
| B. | 4 metres |
| C. | 6 metres |
| D. | 8 metres |
| E. | None of the above |
| Answer» D. 8 metres | |
| 31. |
The area under load curve divided by maximum demand represents |
| A. | Load factor |
| B. | Diversity factor |
| C. | Connected load |
| D. | Average load |
| E. | None of the above |
| Answer» F. | |
| 32. |
Heliochemical process is the process by which |
| A. | solar energy is utilized through photosynthesis |
| B. | neutron energy is converted into thermal energy |
| C. | geothermal energy is converted into electrical energy |
| D. | wind energy is converted into electrical energy |
| E. | None of the above |
| Answer» B. neutron energy is converted into thermal energy | |
| 33. |
The minimum demand on a power station is 10 MW. If the annular load factor is 40%, total evergy generated per year will be |
| A. | 35.04 x 108 kWh |
| B. | 35.04 x 107 kWh |
| C. | 35.04 x 106 kWh |
| D. | 35.04 x 105 kWh |
| E. | None of the above |
| Answer» D. 35.04 x 105 kWh | |
| 34. |
Stability of a system is least affected by |
| A. | reactance of line |
| B. | losses |
| C. | reactance of generator |
| D. | output forque |
| E. | None of the above |
| Answer» C. reactance of generator | |
| 35. |
Of all the different types of conventional power plants, technological advancements are maximum in |
| A. | thermal power plants |
| B. | hydro-power plants |
| C. | gas turbine power plants |
| D. | nuclear power plants |
| E. | None of the above |
| Answer» E. None of the above | |
| 36. |
In a diesel engine the governor controls |
| A. | fuel volume |
| B. | fuel temperature |
| C. | fuel flow rate |
| D. | fuel pressure |
| E. | None of the above |
| Answer» D. fuel pressure | |
| 37. |
Capacity factor and load factor become identical when |
| A. | peak load is equal to the capacity of the plant |
| B. | average load is half the capacity of the plant |
| C. | average load is same as peak load |
| D. | group diversity factor is equal to peak diversity factor |
| E. | None of the above |
| Answer» B. average load is half the capacity of the plant | |
| 38. |
While top surface of an overfeed stoker consists of |
| A. | coal dust, ash |
| B. | ash, coal dust |
| C. | green coal, incandescent coke |
| D. | incandescent coke, green coal |
| E. | None of the above |
| Answer» D. incandescent coke, green coal | |
| 39. |
Sour crude |
| A. | is corrosive when heated |
| B. | evolves significant amounts of hydrogen sulphide on distillation |
| C. | produces light fraction which require sweetening |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 40. |
Ebb current is |
| A. | the same as eddy current |
| B. | the movement of the tidal current away from shore or down a tidal stream |
| C. | the removal by screen of undesirable fine materials from broken ore |
| D. | none of the above |
| E. | None of the above |
| Answer» C. the removal by screen of undesirable fine materials from broken ore | |
| 41. |
All of the following are electrical mechanical storage systems EXCEPT |
| A. | pumped hydro system |
| B. | torsion bar system |
| C. | super conducting coils |
| D. | kinetic flywheels |
| E. | None of the above |
| Answer» D. kinetic flywheels | |
| 42. |
pF number refers to |
| A. | acidic/alkaline water |
| B. | energy with which water is held in the soil |
| C. | decomposition of molecules caused by the absorption of light |
| D. | smog produced by the action of sunlight on the pollutants |
| E. | None of the above |
| Answer» C. decomposition of molecules caused by the absorption of light | |
| 43. |
Thermal storage of energy is possible in the form of |
| A. | sensible heat |
| B. | latent heat |
| C. | chemical reaction |
| D. | Any of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 44. |
The effect of electric shock on human body depends on |
| A. | voltage |
| B. | Current |
| C. | Duration of contact |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 45. |
Liquids lighter than water (such as petroleum oils) have API gravities numerically |
| A. | less than 1.0 |
| B. | greater than 1.0 |
| C. | greater than 10 |
| D. | around 100 |
| E. | None of the above |
| Answer» B. greater than 1.0 | |
| 46. |
A super-thermal power station has |
| A. | total generating capacity of over 2000 MW |
| B. | generating units running at above the critical steam |
| C. | steam generated at critical pressure |
| D. | unity power factor |
| E. | None of the above |
| Answer» B. generating units running at above the critical steam | |
| 47. |
Wooden poles for supporting transmission lines are used for voltages upto |
| A. | 440 V |
| B. | 11 kV |
| C. | 22 kV |
| D. | 66 kV |
| E. | None of the above |
| Answer» D. 66 kV | |
| 48. |
One barrel is nearly |
| A. | 0.96 cubic metre |
| B. | 0.44 cubic metre |
| C. | 0.16 cubic metre |
| D. | 0.013 cubic metre |
| E. | None of the above |
| Answer» D. 0.013 cubic metre | |
| 49. |
In the geysers steam is continuously vented through fissures in the ground. These vents are called |
| A. | vent holes |
| B. | dot holes |
| C. | fumaroles |
| D. | sunspots |
| E. | None of the above |
| Answer» D. sunspots | |
| 50. |
In the areas where snowfall is frequent, under worst conditions, the thickness of ice on a conductor is |
| A. | 1.25 cm |
| B. | 2.75 cm |
| C. | 4.75 cm |
| D. | 6.25 cm |
| E. | None of the above |
| Answer» B. 2.75 cm | |