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CPL Test Series
Question Bank
Questions for ICE ACCRETION
Answer the following questions
Test Mode
Training Mode
1. In clouds _____ occurs when a wide range of water drop sizes are present at temperatures between 0°C and -40°C
Glazed
Rime
Mixture of rime and clear ice
2. CI, CS and CC clouds consist mostly ice crystals, Icing hazard is therefore
Medium
Maximum
Negligible
3. In AC clouds _____ icing is possible in mountainous areas
Light
Moderate
Severe
4. Rime is formed by freezing of ____ supercooled water droplets on airframe when air is flying through clouds
Small
Medium
Large
5. In TCU icing may range from light to severe type at least up to _____ level
-20°C level
-40°C level
30°C level
6. In CB icing may range from light to severe type up to -20°C level. Below this temperature severe icing is
significant
maximum
not significant
7. Airframe icing occurs below 0°C. Its probability of occurrence decreases progressively to -20°C, as at lower temperatures the proportion of super-cooled water drops in a cloud
Increases
Does not change
Decreases
8. The _____ ice poses serious aviation hazard
Rime
Glazed
Hoar Frost
9. In clouds at temperatures below 0°C and aircraft may encounter icing of the type
intermediate between those
only Glazed
only Rime
10. Liquid water content is an important factor in icing. As the maximum water concentration is around ______ , maximum ice formation in clouds may also be expected around the level
-15°C level
-20°C level
-25°C level
11. _____ occurs in AS, NS, AC and towering CU or CB between 0°C and -20°C, in warm front below 0°C, especially if the aircraft has rapidly descended from a colder region
Mixture of Rime and Clear ice
Glazed
Rime
12. AS, NS consist of supercooled water drops and ice crystals in varying proportion icing is possible
Light or moderate
Negligible
Maximum
13. When fog freezes on parked aircraft it produces
Hoar Frost
Rime
Clear ice
14. Glazed ice is formed by freezing of _____ supercooled water droplets on airframe and aircraft is flying through clouds
Small
Large
Medium
15. Opaque Rime ice is
Solid
Mixture of porous and solid
Light porous
16. Hoar frost occurs on airframe in clear air when the temperature of air frame is
just above the frost point
below the frost point
frost point
17. _____ occurs in St, Sc, Ac, Au, Cu, Ns at temperature -10 to -40°C and in Cb at temperature 20 to -40°C
Rime
Glazed
Hoar Frost
18. ______ occurs in a moist cloudless air on an aircraft surface having temp, below 0°C, due to sublimation of water vapour onto feathery ice crystals
Rime
Glazed
Hoar Frost
19. Carburetor icing occurs when air from intake passes through a ventury (choke) and causes expansional cooling and vaporization of fuel. Serious icing can occur can occur at extreme temperatures
20°C
30°C to - 10°C
13°C
20. Icing ____ the stalling speed appreciably
Increases
Does not increase/decrease
Decreases
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