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Machine Design

Machine Design
The shock resistance of steel is increased by adding

Cobalt and molybdenum
Nickel
Nickel and chromium
Chromium

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Machine Design
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

Equal to inside diameter of pipe
Less than 20d
Greater than 30d
Between 20d and 30d

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Machine Design
The wear load should be __________ the dynamic load.

Less than
None of these
Greater than
Equal to

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Machine Design
The efficiency of a riveted joint is equal to

Ps /P
Least of Pt, Ps and Pc/P
Pc /P
Pt /P

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Machine Design
Transverse fillet welded joints are designed for

Bending strength
Compressive strength
Shear strength
Tensile strength

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Machine Design
The endurance limit of a material with finished surface in comparison to rough surface is

Same
More
Less
More or less depending on quantum of load

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