M15 Gas Turbine Engine Sub-Module No 8 (Quiz :1)

Bearings

Quiz

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1. Ball bearing support loads ?
   1.   Radial loads
   2.   Thrust loads
   3.   Thrust and radial loads
2. The bearing is usually locked in position by a steel ?
   1.   Circlip
   2.   Snap ring
   3.   Locking wire
3. These seals are usually spring loaded ?
   1.   Carbon seal
   2.   Rubber seal
   3.   Helical seal
4. Roller bearing support loads ?
   1.   Radial loads
   2.   Thrust and radial loads
   3.   Thrust loads
5. This bearings reduces vibrations transmitted to the engine ?
   1.   Radial bearings
   2.   Roller bearings
   3.   Hydraulic bearings
6. These seals also may be pressurized to minimize oil leaking along the compressor shaft ?
   1.   Labyrinth type
   2.   Labyrinth or thread type
   3.   Thread type
7. Carbon seal are similar in material and application to the carbon brushes used in ?
   1.   Oil motors
   2.   Hydraulic motors
   3.   Electrical motors
8. Antifriction bearings are preferred largely because they offer ?
   1.   More rotational resistance
   2.   Little rotational resistance
   3.   No rotational resistance
9. The rotor shaft also provides the matching surface for the oil seals in the bearing housing, These machined surfaces are called ? A
   1.   Lands
   2.   Grooves
   3.   Cuts
10. These bearings support both thrust and radial loads ?
    1.   Needle bearing
    2.   Roller bearing
    3.   Ball bearing