Select the correct answer.1- In figure (1) what the type of geara- Rack and pinionC- Spur gearFigure (1)b- hypoid and spire gearsd- helical and herringbone gears2- The distance between corresponding profiles of adjacent teeth measured along the base circle is :b- Circular pitchBase circlea-Backlashc- Base pitchd-3- Backlash (TB) is the distance between the space and tooth thickness, as measured along the pitch circle, inactual the backlash should be zero.Trueb- Faisea-4- The size of gear is usually specified by.a- Diameteral pitchC- Base circleb- Pitch circle diameterd- All of them5- The tooth thickness and tooth space measured along the ...b- addendum circlededendum circlea-base circled-C- pitch circle6- The point C & D are inside of point A & B this indicates interferenceb- FalseTrue -a-7- When the gear with large pressure angle, the diameter of the gear isb- biggera-Smallerc- Same diameter8- To eliminated interference byb- Using large pressure anglea- Using more teeth on the gearc- Using shorter teethd- All of them9- For checking no interference in the teetha- Lap

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Select the correct answer. 1- In figure (1) what the type of gear a- Rack and pinion c- Spur gear Figure (1) b- hypoid and spire gears d- helical and herringbone gears 2- The distance between corresponding profiles of adjacent teeth measured along the base circle is : b- Circular pitch d- Base circle a- Backlash c- Base pitch 3- Backlash (Tp) is the distance between the space and tooth thickness, as measured along the pitch circle, in actual the backlash should be zero. a- True b- Faise

Select the correct answer. 1- In figure (1) what the type of gear a- Rack and pinion c- Spur gear Figure (1) b- hypoid and spire gears d- helical and herringbone gears 2- The distance between corresponding profiles of adjacent teeth measured along the base circle is : b- Circular pitch d- Base circle a- Backlash c- Base pitch 3- Backlash (Tp) is the distance between the space and tooth thickness, as measured along the pitch circle, in actual the backlash should be zero. a- True b- Faise

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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1) A 20°, 24-tooth gear has AGMA standard full-depth involute teeth with diametral pitch of 5. Calculate the pitch diameter, circular pitch, addendum, dedendum, standard face width and base circle diameter. 2) Two mating internal 10-pitch, spur gears have 16 and 86 teeth. Determine the center distance. 3) Two mating external 8-pitch, 20o , spur gears have 24 and 64 teeth. Determine the contact ratio. 4) Two mating 20°, 8-pitch, spur gears have 14 and 42 teeth. Will they interfere? 5) A pair of 20°, mild-steel gears are to be selected for an application where they need to transfer 5 hp. The pinion drives at 1800 rpm and the gear must rotate as close to 480 rpm as possible. Select a set of gears to accomplish this task. a) Determine a suitable diametral pitch and pressure angle. b) Use the required velocity ratio to iterate and determine appropriate number of teeth (confirm that these gears are commercially available). c) Calculate the pitch diameters and center distance.
IXTU Q 1/ Select the correct answer. 1- In figure (1) what the type of gear a- Rack and pinion c- Spur gear 2- 8- To eliminated interference by The distance between corresponding profiles of adjacent teeth measured along the base circle is: Backlash a- C- b- Circular pitch d- Base circle Base pitch 3- Backlash (TB) is the distance between the space and tooth thickness, as measured along the pitch circle, in actual the backlash should be zero. a- True 4- The size of gear is usually specified by ......... a- Diameteral pitch C- Base circle a- Using more teeth on the gear Using shorter teeth 9- For checking no interference in the teeth 5- The tooth thickness and tooth space measured along the a- base circle c-pitch circle 6- The point C & D are inside of point A & B this indicates interference b- False a- True 7- When the gear with large pressure angle, the diameter of the gear is Smaller a- b- bigger C- Same diameter a- Lap SR2. sind & Lre ≤ R3 .sind c- Lap ≤ R2.cos & Lre ≤ R3.sin p…
02/ The following data relate to a pair of 20° involute gears in mesh: Module 6 mm, Number of teeth on pinion = 17, Number of teeth on gear 49; Addenda on pinion and gear wheel = 1 module. Find 1. The mumber of pairs of teeth in contact ; 2. The angle turned through by the pinion and the gear wheel when one pair of teeth is in contact, and 3. The ratio of sliding to rolling motion when the tip of a tooth on the larger wheel (i) is just making contact, (i) is just leaving contact with its mating tooth, and (i) is at the pitch point.
Figure shown below illustrates the gears in a speed-change gearbox used in machine tool applications. By sliding the cluster gears on shafts Band C, nine speed changes can be obtained as shown in Table given below. The problem of the machine tool designer is to select tooth numbers for the various gears (2 to 10) so as to produce a reasonable distribution of speeds for the output shaft. The gears 2, 6 and 9 are having 20, 25 and 50 teeth respectively. The input shaft speed is 450 rpm and the output speed can vary from 137 rpm to 580 rpm depending on the sequence of the gears. If the output speed obtained through the gear sequence 2-5-5-8 is 257 rpm and if the minimum and maximum number of teeth in the gear system are 20 and 50 respectively, (i) Suitable tooth numbers for the remaining gears (3,4,5,7,8 & 10)
Twenty degree full depth involute profiled 19-teeth pinion and 37-teeth gear are in mesh. If the module is 5 mm, the center distance between the gear pair will be
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DRAW A GEAR NOMENCLATURE Given: Module of the Gear is 30mm. Number of Teeth is 20. Thickness of the Gear is 80mm. Find the Following: a. Root Diameter, Reference DIameter, TIp Diameter b. Addendum, Dedendum c. Pressure Angle, Base Diameter d. Tooth Thickness, Tooth Depth Draw a complete and detailed sketch Show complete solution Write eligible
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The teeth of the gear arrangement have Gear A=40teeth, Gear B=70 teeth and Gear C= 50teeth, a pinion (driver Gear) that rotates at 625 rpm, and idler Gear B and a driven gear (Gear C). The gears have a module of 5mm and a pressure angle of 200. Find the pitch diameter of gear C in mm.
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10. The figure below illustrates the gears in a speed-change gearbox used in machine tool applications. By sliding the cluster gears on shafts B and C, nine speed changes can be obtained. The problem of the machine tool designer is to select tooth numbers for the various gears so as to produce a reasonable distribution of speeds for the output shaft. The smallest and largest gears are gears 2 and 9, respectively. Using 20 teeth and 45teeth for these gears, determine a set of suitable tooth numbers for the remaining gears. What are the corresponding speeds of the output shaft? 3 w = 450 rev/min Input 7 61 B 8 10 Output w = 137 to 580 rev/min