DGCA Module 17 Preparation Question Papers | Set 20

DGCA Module 17 Propeller Preparation Question Papers Set-20 is covered with key questions to enhance your knowledge of propeller storage and preservation. Also cover propeller Maintenance, propeller Ice Protection which help you prepare effectively for the DGCA exams.

DGCA Module 17

Preparation Set-20

1. Non rotating assembly is.

A) Dome assembly

B) Control assembly

C) Both

2. Purpose of greasing.

A) Lubrication only

B) Cooling only

C) Protection from corrosion

3. In electrical de-icing system, the protective device is.

A) Circuit breaker

B) Fuse

C) Current limiter

4. PGB Means.

A) Propeller’s Gear Bear

B) Propeller Gear Box

C) Power Gear Box

D) Propeller Governor Box

5. MTCS.

C) MPI means Material Particle Inspection

B) NDT means Nondestructive Testing 

C) Both are right

6. Identify incorrect statement regarding use of anti-icing fluid.

A) Phosphate compounds have better performance than isopropyl alcohol

B) Phosphate compounds have reduced in-flammability

C) Phosphate compounds are more expensive than isopropyl alcohol hence not widely used

7. Full de-ice mode in anti-icing fluid system is to.

A) De-ice all the propellers at the same time

B) Keep supplying de-icing fluid till all ice is removed

C) Slow but economical mode of de-icing

8. Do not store propellers by resting them on.

A) their blade tips

B) the hub area

C) a horizontal rack

9. Easa Propeller subparts 7 is.

A) propeller storage and preservation 

B) Propeller Maintenance

C) Propeller Ice Protection

10. The main advantages of the hydromatic propeller are the.

A) Low blade angle range

B) Large blade angle range

C) A+ The feathering and reversing features

D) B+ The feathering and reversing features 

11. Engine shutdown is normally accomplished during the.

A) Feathering process 

B) Unfeathering process

C) Both

12. In terms of the propeller, when the aircraft is in flyable storage, the owner/operator should fly the aircraft at least.

A) 10 minutes in a month

B) 15 minutes in a month

C) 30 minutes in a month

13. Which type propeller synchronization system is normally in the Off position during takeoff, landings, single engine operations, slow flight, and stall practice.

A) Type l 

B) Type ll

C) Type lll

14. Which type synchronizing systems do not assign master and slave ranks to the engines. Rather the system will compare the rpms of the engines and raise the speed of the engines running at a lower rpm.

A) Type l

B) Type ll

C) Type lll

15. Oil pressure and the centrifugal twisting moment (CTM) of the blades are used together to move the blades to.

A) Lower pitch angle

B) Higher pitch angle

C) Constant pitch angle

16. The gear ratio of the reduction gear of a propeller assembly. The correct option is related to.

A) Spur gear planetary – ratio depends on teeth of drive gear and driven gear

B) Bevel gear planetary – ratio depends on teeth of ring driven gear and ring driving gear

D) Both

17. ……. Is designed to prevent the propeller from windmilling when it is feathered in flight.

A) Propeller protector

B) Propeller brake

C) Both

18. The standard method of checking propeller assembly balance.

A) Insert a bushing in the engine shaft hole of the propeller

B) Insert a mandrel or arbor through the bushing

C) Place the propeller assembly so that the ends of the arbor are supported upon the balance stand knife edges. the propeller must be free to rotate

D) All

19. The distributor valve assembly of a hydromatic propeller changes position and reverses the oil passages to the propeller only when the propeller is.

A) In the over-speed condition

B) In the under-speed condition

C) Being un-feathered

20. Identify in-correct statement regarding turbo-prop engines.

A) Changes in power are not related to engine speed

B) It produces thrust indirectly

C) Major component are turbine and linked propeller

21. Power control lever of turbo-prop engine modulates engine power from.

A) Max take-off to cruise

B) Idling to max take-off

C) Max take-off to full power reverse

22. After three years of storage the propeller must be inspected externally for.

A) Corrosion

B) Damage

C) Both

23. For piston engine systems, which preservative is applied in the oil passages of the governor and accumulator.

A) MIL-C-6529C Type I

B) MIL-C-6529C Type II

C) MIL-C-6529C Type III

D) MIL-PRF-23699

24. Which type reservative is specifically formulated to work turbine oils.

A) MIL-C-6529C Type I

B) MIL-C-6529C Type II

C) MIL-C-6529C Type III

D) MIL-PRF-23699

25. MIL-C-6529C Type II preservative is applied in the oil passages for the.

A) Governor and accumulator

B) Fuel control unit

C) Hydraulic pump

26. MIL-C-6529C Type III preservative is specifically formulated to work with which type of oil.

A) Automotive engine oils

B) Hydraulic oils

C) Piston engine oils

D) Turbine oils

27. Why should the hub of a controllable-pitch propeller be filled with preservative oil.

A) To improve blade pitch change speed

B) Because internal members are prone to dissimilar metal corrosion

C) To increase propeller efficiency

D) To reduce engine oil temperature

28. Which preservative oil is used to fill the hub of a controllable-pitch propeller.

A) MIL-C-16173 Type II

B) MIL-PRF-23699

C) MIL-C-6529 Type II

D) MIL-H-5606

29. What is the typical blending ratio of engine oil to preservative oil used for propeller hub protection.

A) 50% engine oil and 50% preservative oil

B) 25% engine oil and 75% preservative oil

C) 75% engine oil and 25% preservative oil

D) 100% preservative oil only

30. Which preservative compound is applied as a thin film on metal propeller blades.

A) MIL-C-6529 Type II

B) MIL-C-16173 Type II

C) MIL-PRF-7808

D) MIL-H-83282

31. Why should rubber parts NOT be coated with MIL-C-16173 compound.

A) It reduces blade balance

B) It absorbs moisture

C) It is unsuitable for rubber materials

D) It increases blade weight

32. Under normal conditions, how often should a propeller be greased to protect it from corrosion.

A) Every 50 flight hours

B) Every 6 months only

C) Once a year or every 100 hours of operation

D) Every month

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