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Machine Design

Machine Design
A rivet is specified by

Type of head
Shank diameter
Length of tail
Length of rivet

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Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Maximum compressive strength is 200 N/mm²
Minimum tensile strength is 200 N/mm²
Carbon content is 2%
Maximum shear strength is 200 N/mm²

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Machine Design
Which of the following screw thread is used for power transmission in one direction only?

Multiple threads
Square threads
Acme threads
Buttress threads

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Machine Design
Lewis form factor for 14½° composite and full depth involute system is (where T = Number of teeth)

0.154 - (0.912/T)
None of these
0.175 - (0.841/T)
0.124 - (0.684/T)

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Machine Design
The following type of nut is used with alien bolt

Castle nut
Any one of the above
Hexagonal nut
Slotted nut

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Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

One-half
One-third
One-fourth
Double

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