1
GATE ME 2012
MCQ (Single Correct Answer)
+1
-0.3
The following are the data for two crossed helical gears used for speed reduction:
Gear $$I:$$ Pitch circle diameter in the plane of rotation 80mm and helix angle 30o

Gear $$II:$$ Pitch circle diameter in the plane of rotation 120mm and helix angle 22.5o

If the input speed is 1440 rpm. The output speed in rpm is

A
1200
B
900
C
875
D
720
2
GATE ME 2010
MCQ (Single Correct Answer)
+1
-0.3
Tooth interference in an external involute spur gear pair can be reduced by
A
decreasing center distance between gear pair
B
decreasing module
C
decreasing pressure angle
D
increasing number of gear teeth
3
GATE ME 2000
MCQ (Single Correct Answer)
+1
-0.3
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 arrangement suitable for this application is
A
differential gear
B
helical gear
C
spur gear
D
worm gear
4
GATE ME 1994
Fill in the Blanks
+1
-0
In spur gears having involute teeth, the product of circular pitch and diametral pitch is _________
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