1
GATE ME 2014
+2
-0.6
Gear 2 rotates at 1200 rpm in counter clockwise direction and engages with Gear 3. Gear 3 and Gear 4 are 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
A
300 rpm counter clockwise
B
300 rpm clockwise
C
4800 rpm counter clockwise
D
4800 rpm clockwise
2
GATE ME 2013
+2
-0.6
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 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 center distance in mm between gears P and S is
A
40
B
80
C
120
D
160
3
GATE ME 2010
+2
-0.6
For the epicyclic gear arrangement shown in the figure, $${{\omega _2} = 100}$$ rad/s clockwise (CW) and $${{\omega _{arm}} = 80}$$ rad/s counter clockwise (CCW). The angular velocity $${{\omega _5}}$$ (in rad/s) is
A
$$0$$
B
$$70$$ CW
C
$$140$$ CCW
D
$$140$$ CW
4
GATE ME 2009
+2
-0.6
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 (CCW $$=$$ counter-clockwise and CW $$=$$ clockwise)

The arm 4 attached to the output shaft will rotate at

A
10 rpm, CCW
B
10 rpm, CW
C
12 rpm, CW
D
12 rpm, CCW
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