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Machine Design

Machine Design
In a flange coupling, the flanges are coupled together by means of

Bolts and nuts
None of these
Studs
Headless taper bolts

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

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

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

P1 + P2
[⅟₂ × (P1 + P2)] + Pc
⅟₂× (P1 + P2)
[(√P1 + √P2)/2]²

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Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Brown colour
White colour
Grey colour
Yellow colour

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Machine Design
The centrifugal tension in the belt

Decreases the power transmitted
Is equal to maximum tension on the belt
Has no effect on the power transmitted
Increases the power transmitted

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Machine Design
The design calculations for members subject to fluctuating loads with the same factor of safety, yield the most conservative estimates when using

Goodman relation
Soderberg relation
None of these
Gerber relation

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