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Machine Design

Machine Design
The belt slip occurs due to

Heavy load
Driving pulley too small
Any one of the above
Loose belt

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Machine Design
In unilateral system of tolerance, the tolerance is allowed on

Both sides of the nominal size
One side of the actual size
One side of the nominal size
Both sides of the actual size

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Machine Design
Which of the following statement is correct, for two shafts connected in parallel?

Angle of twist of each shaft is the same
Torque in each shaft is the same
Torsional stiffness of each shaft is the same
Shear stress in each shaft is the same

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Machine Design
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

Greater than 30d
Between 20d and 30d
Equal to inside diameter of pipe
Less than 20d

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Machine Design
A coupling used to connect two perfectly aligned shafts, is

All of these
Muff coupling
Flange coupling
Compression coupling

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Machine Design
At low temperatures (say 75°C) the notched bar impact value of steel

Decreases markedly
Depends on heat treatment carried out
Remain same
Increases markedly

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