MCQOPTIONS
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MCQOPTIONS
This section includes 67 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Venturi relation is one of the applications of the |
| A. | equation of continuity |
| B. | Bernoulli's equation |
| C. | light equation |
| D. | speed equation |
| Answer» C. light equation | |
| 2. |
The streamlines flow of the water is also known as |
| A. | laminar flow |
| B. | turbulent flow |
| C. | fluid flow |
| D. | both a and b |
| Answer» B. turbulent flow | |
| 3. |
If there is no frictional force between the layers of the fluid then it is known as |
| A. | thick |
| B. | non-viscous |
| C. | compressible |
| D. | incompressible |
| Answer» C. compressible | |
| 4. |
At 30 °C the glycerin has viscosity of |
| A. | 2.801 |
| B. | 4 |
| C. | 1.9 |
| D. | 6.29 |
| Answer» E. | |
| 5. |
Torricelli's theorem is one of the applications of the |
| A. | equation of continuity |
| B. | Bernoulli's equation |
| C. | light equation |
| D. | speed equation |
| Answer» C. light equation | |
| 6. |
The plasma's viscosity at 30 °C is |
| A. | 1.801 |
| B. | 3 |
| C. | 1.7 |
| D. | 6.29 |
| Answer» D. 6.29 | |
| 7. |
Water is a |
| A. | pseudoplastic |
| B. | newtonian fluid |
| C. | rheopectic |
| D. | dilatant |
| Answer» C. rheopectic | |
| 8. |
If the layers of the fluid has frictional force between them then it is known as |
| A. | viscous |
| B. | non-viscous |
| C. | incompressible |
| D. | both a and b |
| Answer» B. non-viscous | |
| 9. |
If every particle of the fluid has irregular flow then the flow is said to be |
| A. | laminar flow |
| B. | turbulent flow |
| C. | fluid flow |
| D. | both a and b |
| Answer» C. fluid flow | |
| 10. |
The constant of equation of continuity is known as |
| A. | flow rate |
| B. | friction |
| C. | fluid flow |
| D. | surface tension |
| Answer» B. friction | |
| 11. |
The volume of the droplet having radius 0.1m will be |
| A. | 4.2 x 10-3 |
| B. | 2 x 10-3 |
| C. | 5.2 x 10-3 |
| D. | 4 x 10-3 |
| Answer» B. 2 x 10-3 | |
| 12. |
Methanol at 30 °C has the viscosity of |
| A. | 0.021 |
| B. | 0.365 |
| C. | 0.51 |
| D. | 3.564 |
| Answer» D. 3.564 | |
| 13. |
At 30 °C acetone has the viscosity of |
| A. | 0.19 |
| B. | 0.295 |
| C. | 0.513 |
| D. | 2.564 |
| Answer» C. 0.513 | |
| 14. |
Who was Florida’s secretary of state in 2000? |
| A. | James Baker |
| B. | Condoleezza Rice |
| C. | Katherine Harris |
| D. | Colin Powell |
| Answer» D. Colin Powell | |
| 15. |
The simplified equation of continuity is represented as |
| A. | A1v1 = A2v2 |
| B. | A1v2 = A2v2 |
| C. | A1v1 = A1v2 |
| D. | A2v1 = A1v1 |
| Answer» B. A1v2 = A2v2 | |
| 16. |
The density of the water is equal to |
| A. | 900 kg/m3 |
| B. | 950 kg/m3 |
| C. | 1000 kg/m3 |
| D. | 1050 kg/m3 |
| Answer» D. 1050 kg/m3 | |
| 17. |
To assist the movement in water, the dolphins have |
| A. | laminared bodies |
| B. | turbulent bodies |
| C. | fat bodies |
| D. | streamlined bodies |
| Answer» E. | |
| 18. |
A pseudoplastic fluid is one in which the viscosity |
| A. | changes during mixing but returns to its original state after mixing |
| B. | is constant regardless of the stirrer speed or mixing time |
| C. | decreases with increasing stirrer speed |
| D. | increases with increasing stirrer speed |
| Answer» D. increases with increasing stirrer speed | |
| 19. |
The change in potential energy of the body moving from height 10m to 5m having mass 3 kg will be |
| A. | 294 |
| B. | 295 |
| C. | 145 |
| D. | 147 |
| Answer» E. | |
| 20. |
At 30 °C the viscosity of the benzene is |
| A. | 0.23 |
| B. | 0.295 |
| C. | 0.61 |
| D. | 0.564 |
| Answer» E. | |
| 21. |
At 30 °C water has the viscosity of |
| A. | 0.801 |
| B. | 2 |
| C. | 1.4 |
| D. | 6.29 |
| Answer» B. 2 | |
| 22. |
When was the Third Seminole War? |
| A. | 1817-1818 |
| B. | 1835-1842 |
| C. | 1855-1858 |
| D. | 1861-1865 |
| Answer» D. 1861-1865 | |
| 23. |
Filamentous fungal cells are more shear sensitive than bacterial cells because of |
| A. | larger in size than bacterial cells and therefore are more susceptible to shear forces |
| B. | the presence of citin in cell walls of filamentous fungi |
| C. | all of the above |
| D. | fungal cells are much larger than bacterial cells |
| Answer» D. fungal cells are much larger than bacterial cells | |
| 24. |
Where is John F. Kennedy Space Centre? |
| A. | Gainsville |
| B. | Cape Canaveral |
| C. | Fort Myers |
| D. | St. Petersburg |
| Answer» C. Fort Myers | |
| 25. |
In sparged mammalian cell bioreactors, the cell damage is caused because of |
| A. | shear stresses arising from the breakup of bubbles at the liquid surface |
| B. | shear stress arising during mixing of the cell culture fluid |
| C. | all of the above |
| D. | shear stresses between bubbles in foam at the liquid surface |
| Answer» C. all of the above | |
| 26. |
Who founded the city of St. Augustine? |
| A. | Hernando de Soto |
| B. | Pedro Menendez de Aviles |
| C. | Alvar Nunez |
| D. | Panfilo de Narvaez |
| Answer» C. Alvar Nunez | |
| 27. |
If fluid is incompressible and it is steady then its mass is |
| A. | increasing |
| B. | decreasing |
| C. | same |
| D. | conserved |
| Answer» E. | |
| 28. |
When the magnitude of the drag force get equal to the weight of the drop the net force acting on a drop becomes |
| A. | 1 |
| B. | 0 |
| C. | min |
| D. | max |
| Answer» C. min | |
| 29. |
The frictional effect between the layers of the flowing fluid is known as |
| A. | viscosity |
| B. | friction |
| C. | gravity |
| D. | surface tension |
| Answer» B. friction | |
| 30. |
Mixing in stirred tank reactors can |
| A. | achieve turbulent conditions by increasing the stirrer speed |
| B. | be described as either laminar, transient or turbulent |
| C. | all of the above |
| D. | induce laminar flow conditions by the addition of baffles |
| Answer» C. all of the above | |
| 31. |
The density of the air is round about equal to |
| A. | 1.2041 kg/m3 |
| B. | 1.3041 kg/m3 |
| C. | 1.4041 kg/m3 |
| D. | 1.5041 kg/m3 |
| Answer» B. 1.3041 kg/m3 | |
| 32. |
Bubble free aeration systems requires |
| A. | carbon dioxide instead of air to supply oxygen |
| B. | silicone tubing or gas permeable membranes to facilitate gas transfer |
| C. | filled headspace of the reactor with carbon dioxide |
| D. | silicone tubing or gas permeable membranes to remove carbon dioxide by oxygen in the form of hydrogen peroxide |
| Answer» C. filled headspace of the reactor with carbon dioxide | |
| 33. |
When the net force acting on a droplet becomes zero its constant speed is known as |
| A. | viscosity |
| B. | friction |
| C. | gravity |
| D. | terminal velocity |
| Answer» E. | |
| 34. |
With the increase of speed in the fluid the drag force on an object will be |
| A. | increases |
| B. | decreases |
| C. | remain same |
| D. | gets doubled |
| Answer» B. decreases | |
| 35. |
Which of the following can act as a shear protectorant? |
| A. | Silicone oil |
| B. | Serum |
| C. | Glutamic acid |
| D. | Glucose |
| Answer» C. Glutamic acid | |
| 36. |
Which ocean is to the west of Florida? |
| A. | Pacific |
| B. | Atlantic |
| C. | Antarctic |
| D. | Indian |
| Answer» C. Antarctic | |
| 37. |
Cross sectional area of the water hose having radius of 0.2m is |
| A. | 1.1 |
| B. | 0.23 |
| C. | 0.125 |
| D. | 1.3 |
| Answer» D. 1.3 | |
| 38. |
Which of the following describes the detrimental effect of bubbles on animal cells? |
| A. | Cells trapped in the moving foam can be dragged apart by the bubbles |
| B. | Cells trapped on the surface of bubbles can be damaged when the bubbles explode, releasing their pressure and surface energies |
| C. | Bubbles can explode in the liquid medium causing the release of ultraviolet radiation |
| D. | Both ( and ( |
| Answer» E. | |
| 39. |
The change in potential energy is measured as the difference of |
| A. | mgf |
| B. | mgh |
| C. | mg |
| D. | mgt |
| Answer» C. mg | |
| 40. |
Force required to slide one layer from another measures the |
| A. | viscosity |
| B. | friction |
| C. | gravity |
| D. | surface tension |
| Answer» B. friction | |
| 41. |
When did Spain cede Florida to USA? |
| A. | 1821 |
| B. | 1776 |
| C. | 1848 |
| D. | 1756 |
| Answer» B. 1776 | |
| 42. |
Who claimed Florida for Spain? |
| A. | Christopher Columbus |
| B. | Francisco Pizarro |
| C. | Ferdinand Magellan |
| D. | Juan Ponce de Leon |
| Answer» E. | |
| 43. |
The viscosity of a fluid changes with either stirrer speed or mixing time. But when mixing ceases, the viscosity returns to its original state. This fluid is best described as |
| A. | rheopectic |
| B. | newtonian |
| C. | thixotropic |
| D. | viscoelastic |
| Answer» E. | |
| 44. |
The viscous nature of a non-Newtonian fluid |
| A. | changes with the level of power input and/or the length of time during which the fluid is mixed |
| B. | remains constant with time and power input |
| C. | is similar to that of water |
| D. | is similar to that of a perfect gas |
| Answer» B. remains constant with time and power input | |
| 45. |
Mass flow of 10 kg of water in 10s will be |
| A. | 10 kg/s |
| B. | 1 kg/s |
| C. | 1.2 kg/s |
| D. | 2 kg/s |
| Answer» C. 1.2 kg/s | |
| 46. |
According to the Bernoulli's equation where the speed is high the pressure will be |
| A. | high |
| B. | low |
| C. | min |
| D. | max |
| Answer» C. min | |
| 47. |
If the density of the fluid is not constant it is said to be |
| A. | viscous |
| B. | incompressible |
| C. | compressible |
| D. | both a and b |
| Answer» D. both a and b | |
| 48. |
If the fluid has constant density then it is said to be |
| A. | thick |
| B. | in-viscous |
| C. | compressible |
| D. | incompressible |
| Answer» E. | |
| 49. |
According to the equation of continuity the product of area of pipe and the speed of fluid along the pipe is |
| A. | 1 |
| B. | 0 |
| C. | constant |
| D. | different |
| Answer» D. different | |
| 50. |
Water flowing through hose having diameter 1 cm at speed of 1 m/s if water is to emerge at 21 m/s then diameter of the nozzle is |
| A. | 0.2 cm |
| B. | 0.1 cm |
| C. | 0.02 cm |
| D. | 0.01 cm |
| Answer» B. 0.1 cm | |