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Machine Design

Machine Design
Which one of the following is a positive drive?

Chain drive
Crossed flat belt drive
Rope drive
V-belt drive

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Machine Design
The cam follower generally used in automobile engines is

Roller follower
Spherical faced follower
Flat faced follower
Knife edge follower

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Machine Design
The arms of the pulleys for flat belt drive have

Major axis in plane of rotation
Major axis twice the minor axis
Elliptical cross-section
All the three characteristics

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Machine Design
The dedendum circle diameter is equal to (where φ = Pressure angle)

Clearance circle diameter × cosφ
Addendum circle diameter × cosφ
Pitch circle diameter × sinφ
Pitch circle diameter × cosφ

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Machine Design
For general industrial machinery, the ratio of the length of journal to its diameter is taken as

0.5 to 1
3 to 5
1 to 2
5 to 10

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Machine Design
The strap end of a connecting rod of steam engine is joined by

Sleeve and cotter joint
Spigot socket cotter joint
Knuckle joint
Gib of cotter joint

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