GATE ME

Gears and Gear Trains

Theory of Machines

(Past Years Questions)

Marks 1

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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....
GATE ME 2015 Set 3
Which one of the following is used to convert a rotational motion into a translational motion?
GATE ME 2014
The following are the data for two crossed helical gears used for speed reduction: Gear $$I:$$ Pitch circle diameter in...
GATE ME 2012
Tooth interference in an external involute spur gear pair can be reduced by
GATE ME 2010
A 1.5 kW motor is running at 1440 rev/min. Its is to be connected to a stirrer running at 36 rev/min. The gearing arran...
GATE ME 2000
In spur gears having involute teeth, the product of circular pitch and diametral pitch is _________
GATE ME 1994

Marks 2

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A gear train shown in the figure consists of gears P, Q, R and S. Gear Q and gear R are mounted on the same shaft. All t...
GATE ME 2017 Set 2
In an epicyclic gear train, shown in the figure, the outer ring gear is fixed, while the sun gear rotates counterclockwi...
GATE ME 2017 Set 1
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...
GATE ME 2016 Set 1
A pinion with radius $${r_1}$$, and inertia $${{\rm I}_1}$$ is driving a gear with radius $${r_2}$$ and inertia $${{\rm ...
GATE ME 2015 Set 1
Gear 2 rotates at 1200 rpm in counter clockwise direction and engages with Gear 3. Gear 3 and Gear 4 are mounted on the ...
GATE ME 2014
It is desired to avoid interference in a pair of spur gears having a 20o pressure angle. With increase in pinion to gear...
GATE ME 2014
A compound gear train with gears P, Q, R and S has number of teeth 20, 40, 15 and 20, respectively. Gears Q and R are mo...
GATE ME 2013
For the epicyclic gear arrangement shown in the figure, $${{\omega _2} = 100}$$ rad/s clockwise (CW) and $${{\omega _{a...
GATE ME 2010
An epicyclic gear train is shown schematically in the adjacent figure The sun gear 2 on the input shaft is a 20 teeth ex...
GATE ME 2009
Match the items in columns $$I$$ and $$II$$ Column $$I$$ $$P.$$ Addendum $$Q.$$ Instantaneous center of velocity $$R.$$ ...
GATE ME 2006
A planetary gear train has four gears and one carrier. Angular velocities of the gears are $${\omega _1},{\omega _2},{\o...
GATE ME 2006
A planetary gear train has four gears and one carrier. Angular velocities of the gears are $${\omega _1},{\omega _2},{\o...
GATE ME 2006
The overall gear ratio in a 2 stage speed reduction gear box (with all spur gears) is 12. The input and output shafts of...
GATE ME 2003
The overall gear ratio in a 2 stage speed reduction gear box (with all spur gears) is 12. The input and output shafts of...
GATE ME 2003
The sun gear in the figure is driven clockwise at 100 rpm. The ring gear is held stationary. For the number of teeth sho...
GATE ME 2001
List $$I$$ (Gear types) (a) Worm gears (b) Cross helical gears (c) Bevel gears (d) Spur gears List $$II$$ (Applications)...
GATE ME 1995
The arm OA of an epicylic gear train shown in Fig. revolves counter clockwise about O with an angular velocity of 4 rad/...
GATE ME 1995

Marks 5

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A planetary gear train is shown in Figure. Internal gear (1) has 104 teeth and is held fixed and planet gear (2) has 96 ...
GATE ME 1999
Below Fig show a planetary gear train. Gears 2, 4 and 5 have 24, 40 and 144 teeth respectively. Gear 5 is fixed. Gear 2...
GATE ME 1996

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