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Machine Design

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

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

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Machine Design
A shaft is subjected to

Combined bending and shear stresses
All of these
Shear stresses
Bending stresses

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Machine Design
The bearing characteristic number in a hydrodynamic bearing depends upon

Length, width and speed
Viscosity, speed and bearing pressure
Viscosity, speed and load
Length, width and load

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Machine Design
When the fulcrum is in between the load and effort, the lever is said to be of

Third type
Any one of these
First type
Second type

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

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

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Machine Design
The distribution of the forces along the length of key fitted in a shaft

Varies exponentially, being more near the torque-input end
Varies exponentially, being less near the torque-input end
Is uniform throughout
Varies linearly

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