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Machine Design

Machine Design
The size of a gear is usually specified by

Pitch circle diameter
Pressure angle
Diametral pitch
Circular pitch

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Machine Design
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is

Equal
Smaller
Larger/smaller depending on diameter of spring coil
Larger

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Machine Design
In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

Twice
Equal to
Four times
Three times

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Machine Design
A tube has the following advantage over pipe

Smoother inside walls
All of these
Lighter and easier to handle
Greater shock absorption

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Machine Design
The shock resistance of steel is increased by adding

Nickel and chromium
Nickel
Cobalt and molybdenum
Chromium

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Machine Design
18/8 steel contains

18% nickel and 8% vanadium
18% nickel and 8% chromium
18% vanadium and 8% nickel
18% chromium and 8% nickel

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