GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

Theory of Machines (TOM)

Mechanical Engineering : GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

The document GATE Past Year Questions: Gears & Gear Trains Notes | EduRev is a part of the Mechanical Engineering Course Theory of Machines (TOM).
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Try yourself:In the gear train shown gear 3 is carried on arm 5, Gear 3 meshes with gear 2 and gear 4. The number of teeth on gear 2, 3 and 4 are 60, 20, and 100, respectively. If gear 2 is fixed and gear 4 rotates with an angular velocity of 100 rpm in the counterclockwise direction, the angular speed of arm 5 (in rpm) is

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[2016,Set-1]

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Try yourself:A gear train is made up of five spur gears as shown in the figure. Gear 2 is driver and gear 6 is driven member. N2, N3, N4, N5 and N6 represent number of teeth on gears 2,3,4,5 and 6 respectively. The gear(s) which act(s) as idler(s) is/are

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[2015,Set-3]

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Try yourself:The number of degree of freedom of the planetary gear train shown in the figure is

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[2015,Set-2]

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Try yourself:Gear 2 rotates at 1200 rpm is counter clockwise direction and engages with Gear 3 and Gear 4 mounted on the same shaft. Gear 5 engages with Gear 4. The numbers of teeth on Gears 2, 3, 4 and 5 are 20, 40, 15 and 30, respectively. The angular speed of Gear 5 is 

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[2014,Set-3]

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Try yourself:A compound gear train with gears P, Q, R and S has number of teeth 20,40,15 and 20 respectively.Gears Q and P are mounted on the same shaft as shown in the figure below. The diameter of the gear Q is twice that of the gear R. If the module of the gear R is 2 mm, the centre distance in mm between gears Pand S is

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[2013]

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Try yourself:For the epicyclic gear arrangement shown in the figure, ω2 = 100 rad/s clockwise (cw) and ωarm = 80 rad/s counter clockwise (ccw). The angular velocity ω5 (in rad/s) is

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[2010]

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Try yourself:An epicyclic gear train is shown schematically in the adjacent figure. The sun gear 2 on the input shaft is a 20 teeth external gear. The planet gear 3 is a 40 teeth external gear. The ring gear 5 is a 100 teeth internal gear. The ring gear 5 is fixed and the gear 2 is rotating at 60 rpm ccw(ccwcounterclockwise and cw- clockwise).

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

The arm 4 attached to the output shaft will rotate at

[2009]

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Try yourself:The arm OA of a epicyclic gear train shown in figure revolves counter clockwise about Owith an angular velocity of 4 rad/s. Both gear are of same size. The angular velocity of gears C, if the sun gear B is fixed is

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[1995]

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Try yourself:The sun gear in the figure is driven clockwise at 100 rpm. The ring gear is held stationary. For the number of teeth shown on the gears, the arm rotates at

GATE Past Year Questions: Gears & Gear Trains Notes | EduRev

[1993]

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Try yourself:A spur gear has pitch circle diameter D and number of teeth T. The circular pitch of the gear is

[2019,Set 2]

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Try yourself:A spur gear with 200 full depth teeth is transmitting 20 kW at 200 rad/s. The pitch circle diameter of the gear is 100 mm. The magnitude of the force applied on the gear in the radial direction is

[2019, Set 1]

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Try yourself:It is desired to avoid interference in a pair of spur gears having a 20° pressure angle. With increase in pinion to gear speed ratio, the minimum number of teeth on the pinion

[2014,Set-4]

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Try yourself:The following are the data for two crossed helical gears used for speed reduction:
Gear I : Pitch circle diameter in the plane of rotation 80 mm and helix angle 30°
Gear II : Pitch circle diameter in the plane of rotation 120 mm and helix angle 22.5°

If the input speed is 1440 rpm, the output speed in rpm is

[2012]

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Try yourself:Tooth interference in an external involute spur gear pair can be reduced by

[2010]

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Try yourself:A 1.5 kW motor is running at 1440 rev/min. It is to be connected to a stirrer running at 36 rev/min. The gearing arrangement suitable for this application is

[2000]

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