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Machine Design

Machine Design
The V-belts are particularly suitable for __________ drives.

Both A and B
Long
Short
None of these

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Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

(p - d) σt
p.d.σt
p.t.σt
(p - d) t.σt

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Machine Design
The design of the pressure vessel is based on

None of these
Longitudinal and hoop stress
Longitudinal stress
Hoop stress

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Machine Design
A double fillet welded joint with parallel fillet weld of length 'l' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by

2P/s.l
P/2.s.l
√2P/s.l
P/√2.s.l

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Machine Design
The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to

4.5/(4.5 + v)
3/(3 + v)
0.75/(0.75 + √v)
6/(6 + v)

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Machine Design
Which process will increase the fatigue duration of parts?

Shot-peening
De-carburisation
Finishing and polishing
Electroplating

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