Thursday, 26 September 2013

External vs internal gears

An external gear is one with the teeth formed on the outer surface of a cylinder or cone. Conversely, an internal gear is one with the teeth formed on the inner surface of a cylinder or cone. For bevel gears, an internal gear is one with the pitch angle exceeding 90 degrees. Internal gears do not cause output shaft direction reversal.
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Quiz on Gears

This quiz is to test your knowledge
  1. Spur gear design normally begins with selecting this:

    2. Tooth size
    Gear size
    Pitch diameter

  2. The most common geometric form used in gears today is this

    3. Involute profile
    Convolute profie
    Spur circle

  3. This is a curve showing the displacement of the follower as ordinates on a base line that represen

    4. Follower
    Displacement diagram
    Reciprocation chart

  4. Gears are used to do the following for rotating shafts:

    5. Reduce friction
    Reduce cost
    Reduse slip

  5. These gears transmit power between shafts whose axes intersect at any angle:

    6. Worm gears
    Racks
    Bevel gears

  6. The ratio between the speed of the camshaft and the speed of the crankshaft is

    7. 1:1
    1:4
    1:1/4

  7. The function of a torque converter or fluid converter is similar to that of a

    8. Clutch
    Gear box
    Torsion box

  8. The sun gear in the planetary gear system meshes with the

    9. Pinion cage
    Planet pinions
    Ring gear

  9. In gear systems, speed reduction means torque

    10. Stabilization
    Increase
    Both

  10. Spur Gear is

    11. Intersecting gear
    44 Angle gear
    0 angle gear

NOTHING IS EVER BAD AS IT SEEMS AT FIRST..

All the best