Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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In a multiple gear drive an idler is used mainly to _________________.
a. | increase torque | c. | change direction of rotation | b. | increase
speed | d. | increase space
between shafts |
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2.
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The concepts used to calculate speed and torque of multi-gear drives can also be
applied to compound gears with which of the following changes?
a. | The compound gears will have no effect. | c. | Pitch diameter will
change. | b. | Idler gears will cause a change in speed and torque. | d. | gear ratio of any gears mounted on the same
shaft must be included in calaculations. |
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3.
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The major disadvantage of a solid coupling is they ________________.
a. | do not allow for any misalignment | c. | are difficult to
install | b. | are very exspensive | d. | cause vibration |
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4.
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The major feature of a split sleeve coupling is ______________.
a. | very easy to align | c. | inexpensive when compared to solid sleeve
couplings | b. | never used on long shafts | d. | allows the coupling to be removed without moving the two
shafts |
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5.
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A compound gear drive is a type of gear train that has ______________.
a. | an intersecting axis | c. | gears with two or more diametral pitches | b. | two or more gears
mounted on one shaft | d. | two or
more shafts |
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6.
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A reverted gear drive ___________________.
a. | creates a gear reduction between two shafts on the same axis | c. | increases shaft
speed between two shafts on the same axis | b. | reverses the direction of rotation between two
shafts on the same axis | d. | has
two or more shafts no in the same axis |
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7.
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The only exception to the even/odd rule used to determine the direction of
rotation in a gear drive is for _______________ gear drives.
a. | multiple | c. | reduction | b. | compound | d. | idler |
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8.
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Normally, to align a multiple shaft drive system, the order of alignment is to
start with the ________________.
a. | motor | c. | last output shaft | b. | driver shaft | d. | first output
shaft |
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9.
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For adjacent shaft power transmission, the two shafts ________________.
a. | must be at the same height and in the same axis | c. | must be the same
diameter | b. | must be the same length | d. | must be parallel |
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10.
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Two shafts connected by a sleeve coupling need to be aligned
_________________.
a. | only in the vertical plane | c. | both horizontally and
vertically | b. | only in the horizaontal plane | d. | after coupling is in place on the two
shafts |
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11.
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A floating shaft ________________.
a. | is connected to a driver shaft by a flexible jaw coupling | c. | is designed to be
moved or reversed in a multiple gear drive | b. | is not supported directly by any
bearings | d. | has only one
bearing support |
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Matching
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SEGMENT 1
Note: some answers may
apply to more than one question.
a. | multiple | d. | total | b. | idler | e. | idler gears | c. | compound |
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12.
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_____________ gears only change the direction in which a driven gear rotates.
It has no affect on the speed and torque that is transferred from driver to driven shafts.
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13.
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To calculate the speed and torque of a multiple shaft drive, you only need the
gear ratio of the output gear and the driver gear. All other gears are __________.
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14.
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A(n) _____________ shaft drive has a driver gear and several output gears.
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15.
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___________ torque is found by summing all the torque that would be required to
drive each output shaft by itself.
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16.
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When calculating the speed and torque of a(n) __________ drive, you need to
apply all gears that are mounted to the same shaft.
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17.
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___________ gear drives have more than one gear mounted on the same shaft.
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SEGMENT 2
a. | aligned | d. | change | b. | opposite | e. | compound | c. | last
output | f. | same |
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18.
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Each gear that is added to a gear train causes the direction of rotation to
____________.
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19.
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An even number of gears in a train causes the driven shaft to rotate in the
direction ___________ to that of the driver shaft.
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20.
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An odd number of gears in a gear train causes the driven shaft to rotate in the
__________ direction as the driver shaft.
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21.
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The exception to the even/odd gear rules is found in __________.
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22.
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Each shaft in a multiple shaft drive must be individually ____________.
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23.
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The order of alignment of a multiple shaft drive is to start with the
__________ shaft first.
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SEGMENT 3
a. | removed | c. | misalignment | b. | solid | d. | sleeve |
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24.
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A(n) __________ coupling is used when it is necessary to extend the length of a
shaft or to provide a means of disconnecting a shaft.
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25.
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Sleeve and flange couplings are two types of ___________ couplings.
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26.
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A(n) ______________ coupling can either be split or solid.
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27.
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The two halves of a split-sleeve coupling allow it to be __________ without
moving the shafts away from each other.
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28.
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Sleeve couplings do not allow any ____________.
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