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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

Dedendum
Addendum
Clearance
Working depth

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

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

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Machine Design
The value of Lewis form factor used in design of gears is

All of these
Dependent on number of teeth of a gear
Dependent on system of teeth
Independent of size of teeth

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Machine Design
The property of a material which enables it to resist fracture due to high impact loads is known as

Toughness
Strength
Elasticity
Endurance

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Machine Design
If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited

Acme
Square
BSW
Buttress

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Machine Design
An alien bolt is

Provided with hexagonal depression in head
Used in high speed components
Self locking bolt
Same as stud

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