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Questions and Answers
What is the purpose of using the spoked design in large spur gears?
What is the purpose of using the spoked design in large spur gears?
Why is the illustration of the spoked gear in Figure 8-4(a) missing a keyway?
Why is the illustration of the spoked gear in Figure 8-4(a) missing a keyway?
What is the purpose of the solid hub design in smaller spur gears?
What is the purpose of the solid hub design in smaller spur gears?
What is the assembly called when spur gear teeth are machined into a straight, flat bar?
What is the assembly called when spur gear teeth are machined into a straight, flat bar?
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Why are gears with diameters between small solid form and larger spoked form often produced with a thinned web?
Why are gears with diameters between small solid form and larger spoked form often produced with a thinned web?
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What ability does a designer have when creating special gear designs?
What ability does a designer have when creating special gear designs?
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What are the preferred units for pitch line speed according to the text?
What are the preferred units for pitch line speed according to the text?
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How is pitch line speed calculated in the Metric Module System?
How is pitch line speed calculated in the Metric Module System?
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What is the purpose of developing unit-specific relationships for pitch line speed in the mentioned units?
What is the purpose of developing unit-specific relationships for pitch line speed in the mentioned units?
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Why are certain units preferred for pitch line speed calculations in gear design?
Why are certain units preferred for pitch line speed calculations in gear design?
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What is the significance of exercising careful manipulation of units in gear design?
What is the significance of exercising careful manipulation of units in gear design?
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What is the main function of the pitch circle in gears?
What is the main function of the pitch circle in gears?
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Which symbol is commonly used to represent the number of teeth in gears?
Which symbol is commonly used to represent the number of teeth in gears?
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What is the purpose of the pitch diameter D in gear calculations?
What is the purpose of the pitch diameter D in gear calculations?
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Which pitch system is commonly used in the United States?
Which pitch system is commonly used in the United States?
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What is important about having identical pitches in mating gears?
What is important about having identical pitches in mating gears?
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What is another term sometimes used for diametral pitch Pd?
What is another term sometimes used for diametral pitch Pd?
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In which systems are standard pitches defined?
In which systems are standard pitches defined?
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What is the primary function of the number of teeth in a gear?
What is the primary function of the number of teeth in a gear?
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What is the relationship between pitch, gears, and their engagement?
What is the relationship between pitch, gears, and their engagement?
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What is the significance of tolerances on critical dimensions in gears and gear trains?
What is the significance of tolerances on critical dimensions in gears and gear trains?
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What is the minimum number of teeth required for the pinion in the 141°, 2 full-depth, involute system to ensure no interference?
What is the minimum number of teeth required for the pinion in the 141°, 2 full-depth, involute system to ensure no interference?
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How many teeth are required to avoid interference in the 20°, full-depth, involute system?
How many teeth are required to avoid interference in the 20°, full-depth, involute system?
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What is the maximum number of teeth that can be used on the mating gear for a 20°, full-depth system when the pinion has only 17 teeth?
What is the maximum number of teeth that can be used on the mating gear for a 20°, full-depth system when the pinion has only 17 teeth?
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What is the velocity ratio defined as?
What is the velocity ratio defined as?
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Which term refers to the product of the velocity ratios for each gear pair in a gear train?
Which term refers to the product of the velocity ratios for each gear pair in a gear train?
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What happens to most gear drives in terms of speed?
What happens to most gear drives in terms of speed?
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What is the action equivalent to when two gears are in mesh without slipping?
What is the action equivalent to when two gears are in mesh without slipping?
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In a gear train, what is considered the fundamental building block of the total speed change ratio?
In a gear train, what is considered the fundamental building block of the total speed change ratio?
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What is true about the linear velocity at the pitch point when two gears are in mesh?
What is true about the linear velocity at the pitch point when two gears are in mesh?
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What is the main difference between a gear train and a gear system?
What is the main difference between a gear train and a gear system?
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What is the most widely used spur gear tooth form mentioned in the text?
What is the most widely used spur gear tooth form mentioned in the text?
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What geometric curves are gear teeth in mesh based on?
What geometric curves are gear teeth in mesh based on?
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Why is maintaining a constant angular velocity ratio between two rotating gear teeth important?
Why is maintaining a constant angular velocity ratio between two rotating gear teeth important?
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Which illustration helps visualize an involute curve according to the text?
Which illustration helps visualize an involute curve according to the text?
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What does the base circle represent in gear teeth geometry?
What does the base circle represent in gear teeth geometry?
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What principle of kinematics ensures a constant angular velocity ratio between two rotating bodies?
What principle of kinematics ensures a constant angular velocity ratio between two rotating bodies?
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What AGMA standard is primarily referenced for analytical design methods related to spur and helical gears?
What AGMA standard is primarily referenced for analytical design methods related to spur and helical gears?
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'Diametral Pitch System' and 'Metric Module System' are associated with what aspect of gear design?
'Diametral Pitch System' and 'Metric Module System' are associated with what aspect of gear design?
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'Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth' is a standard set by which organization?
'Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth' is a standard set by which organization?
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What is the equation to compute the equivalent diametral pitch, Pd, for given standard metric modules?
What is the equation to compute the equivalent diametral pitch, Pd, for given standard metric modules?
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What advantage do the final forms of the center distance Equations (8-7) and (8-8) provide according to the text?
What advantage do the final forms of the center distance Equations (8-7) and (8-8) provide according to the text?
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What causes backlash in gear teeth transmission according to the text?
What causes backlash in gear teeth transmission according to the text?
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What is an important design decision related to backlash in gear pairs?
What is an important design decision related to backlash in gear pairs?
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Which association provides recommendations for backlash in gear standards?
Which association provides recommendations for backlash in gear standards?
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What does the pressure angle determine in gear teeth design?
What does the pressure angle determine in gear teeth design?
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In gear teeth transmission, what does the force transferred from the driver to the driven gear act along?
In gear teeth transmission, what does the force transferred from the driver to the driven gear act along?
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What is backlash in gear pairs influenced by according to the text?
What is backlash in gear pairs influenced by according to the text?
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What is used to feed the cutter generating the gear teeth more deeply into the gear blank than the theoretical value?
What is used to feed the cutter generating the gear teeth more deeply into the gear blank than the theoretical value?
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What is an inaccurate calculation for center distance caused by according to the text?
What is an inaccurate calculation for center distance caused by according to the text?
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What is the relationship between pitch and tooth size?
What is the relationship between pitch and tooth size?
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What are coarse pitches defined as?
What are coarse pitches defined as?
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What does a metric module m of smaller value indicate?
What does a metric module m of smaller value indicate?
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What is the relation between diametral pitch (Pd) and metric module (m)?
What is the relation between diametral pitch (Pd) and metric module (m)?
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Which symbol is sometimes used for module in references and vendors' tables?
Which symbol is sometimes used for module in references and vendors' tables?
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What is the center distance defined as?
What is the center distance defined as?
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What is the face width of a gear?
What is the face width of a gear?
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"A module of $m = 1.25$ is closely similar in size to which diametral pitch value?"
"A module of $m = 1.25$ is closely similar in size to which diametral pitch value?"
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What is the basic definition of the train value in a gear train?
What is the basic definition of the train value in a gear train?
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What is a common feature of an idler gear in a gear train?
What is a common feature of an idler gear in a gear train?
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How is an internal gear different from an external gear?
How is an internal gear different from an external gear?
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What is the purpose of an internal gear in a gear train?
What is the purpose of an internal gear in a gear train?
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How is the train value calculated for a double-reduction gear train?
How is the train value calculated for a double-reduction gear train?
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When using an idler gear in a gear train, what effect does it have on the output gear?
When using an idler gear in a gear train, what effect does it have on the output gear?
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What determines whether a train value is considered positive or negative in a gear train?
What determines whether a train value is considered positive or negative in a gear train?
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What is an idler gear also known as in a gear train?
What is an idler gear also known as in a gear train?
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What is a common application for using internal gears?
What is a common application for using internal gears?
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In what scenario would it be essential to express velocity ratio in terms of the numbers of teeth in each gear?
In what scenario would it be essential to express velocity ratio in terms of the numbers of teeth in each gear?
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What is the formula to calculate the base circle diameter for a gear?
What is the formula to calculate the base circle diameter for a gear?
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Which tooth form is considered obsolete in gear design?
Which tooth form is considered obsolete in gear design?
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What defines the term 'contact ratio' in gear operation?
What defines the term 'contact ratio' in gear operation?
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When does interference between gears occur?
When does interference between gears occur?
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What is the minimum recommended contact ratio in typical spur gear combinations?
What is the minimum recommended contact ratio in typical spur gear combinations?
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How can a designer ensure no interference between gears in a given application?
How can a designer ensure no interference between gears in a given application?
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What is the full-depth, involute-tooth form for varying pressure angles?
What is the full-depth, involute-tooth form for varying pressure angles?
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