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Machine Design

Machine Design
The radial distance of a tooth from the pitch circle to the top of the tooth is called

Addendum
Working depth
Clearance
Dedendum

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Machine Design
Rankine Gordon formula for buckling is valid for

Short column
Very long column
Short and long column
Long column

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Machine Design
The rolling contact bearings as compared to sliding contact bearings have

Small overall dimensions
All of these
Accuracy of shaft alignment
Low starting and low running friction except at very high speeds

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Machine Design
Belt slip may occur due to

Loose belt
Driving pulley too small
All of these
Heavy load

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Machine Design
The value of stress concentration factor depends upon

None of these
Material and geometry of the part
Material of the part
Geometry of the part

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Machine Design
Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by

(k₁ - k₂)/ (k₁ k₂)
(k₁ k₂)/ (k₁ + k₂)
(k₁ - k₂)/ (k₁ + k₂)
(k₁ + k₂)/ (k₁ k₂)

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