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Machine Design

Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

p.d.σt
p.t.σt
(p - d) σt
(p - d) t.σt

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Machine Design
When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

√(Pmax / 3m)
√(3m /Pmax)
√(Pmax / 2m)
√(Pmax / m)

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Machine Design
According to Indian standards, total numbers of tolerance grades are

12
18
20
8

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Machine Design
In most machine members, the damping capacity of the material should be

High
Could be anything
Low
Zero

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Machine Design
In order to withstand resistance to wear, the best profile of gear is

20° full depth involute tooth
20° involute stub tooth
14½° full depth involute tooth
14½° stub tooth

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Machine Design
Brittle coating technique is used for

Protecting metal against corrosion
Protecting metal against wear and tear
Experimental stress analysis
Determining brittleness

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