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Machine Design

Machine Design
In a marine flange coupling, the thickness of flange is taken as

d/2
d/4
d/3
3d/4

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Machine Design
For tight leakage joints, following type of thread is best suited

Buttress
Square
NPT (national pipe threads).
Metric

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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 (neglecting centrifugal tension) will be equal to (Where, Pc is centrifugal tension)

[⅟₂ × (P1 + P2)] + Pc
P1 + P2
P1 - P2
⅟₂ × (P1 + P2)

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Machine Design
Which of the following formula is used in designing a connecting rod?

Euler's formula
Rankine's formula
Johnson's parabolic formula
Johnson's straight line formula

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Machine Design
The cross-section of the arm of a bell crank lever is

Any one of these
I-section
Elliptical
Rectangular

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Machine Design
According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by

All of these
0.5 mm up to rivet diameter of 24 mm
1 mm for rivet diameter from 27 mm to 36 mm
2 mm for rivet diameter from 39 mm to 48 mm

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