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Machine Design

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

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

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Machine Design
In designing a connecting rod, it is considered like __________ for buckling about X-axis.

One end fixed and the other end hinged
Both ends fixed
One end fixed and the other end free
Both ends hinged

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

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Machine Design
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

Crown Bevel gears
Mitre gears
Internal bevel gears
Angular bevel gears

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Machine Design
For a square key made of mild steel, the shear and crushing strength are related as

Shear strength is greater than crushing strength
None of these
Shear strength is less than crushing strength
Shear strength is equal to crushing strength

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

Flanged
Expansion
Threaded
Bell and spigot

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