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Machine Design

Machine Design
The crest diameter of a screw thread is same as

Major diameter
Pitch diameter
Minor diameter
Core diameter

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Machine Design
Aircraft body is usually fabricated by

Casting
Pre-casting
Welding
Riveting

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Machine Design
A flange coupling is used to connect two shafts

Whose axes intersect at a small angle
Have lateral misalignment
Which are not in exact alignment
Which are perfectly aligned

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Machine Design
Which of the following statement is correct, for two shafts connected in parallel?

Torque in each shaft is the same
Torsional stiffness of each shaft is the same
Angle of twist of each shaft is the same
Shear stress in each shaft is the same

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Machine Design
A hot short metal is

Brittle under all conditions
Ductile at high temperature
Brittle when cold
Brittle when hot

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Machine Design
Which of the following property is essential for spring materials?

Stiffness
Plasticity
Ductility
Resilience

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