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Machine Design

Machine Design
The suitable material for belt used in flour mill is

Balata gum
Rubber
Canvas or cotton duck
Leather

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Machine Design
When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

Angular bevel gears
Internal bevel gears
Miter gears
Crown bevel gears

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Machine Design
According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)

1.875 × (π/4) d² × τ × n
2 × (π/4) d² × τ × n
(π/4) d² × τ × n
3 × (π/4) d² × τ × n

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Machine Design
In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.

Right hand
None of these
Left hand
Both A and B

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Machine Design
The power transmitted by means of a belt depends upon

Velocity of the belt
Arc of contact between the belt and the smaller pulley
Tension under which the belt is placed on the pulleys
All of these

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Machine Design
In a flange coupling, the bolts are subjected to

Shear stress
None of these
Tensile stress
Compressive stress

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