Machine Design
The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to 6/(6 + v).

15 m/s
20 m/s
12.5 m/s
10 m/s

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Machine Design
Form coefficient of spring is

Load required to produce unit deflection
Ratio of coil diameter to wire diameter
Concerned with strength of wire of spring
Its capability of storing energy

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