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Machine Design

Machine Design
The size of a gear is usually specified by

Circular pitch
Pitch circle diameter
Diametral pitch
Pressure angle

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

Ductility
Resilience
Stiffness
Plasticity

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Expansion
Bell and spigot
Flanged
Threaded

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Machine Design
If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to

T₁ + T₂ + Tc
T₁ - T₂ + Tc
(T₁ + T₂ + Tc)/2
(T₁ - T₂ + Tc)/2

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Machine Design
Which of the following is a permanent fastening?

Cotters
Keys
Bolts
Rivets

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Machine Design
When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be

4F/ πd²
16F/ 3πd²
6F/ πd²
8F/ πd²

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