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Machine Design

Machine Design
The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

1 micron
0.1 micron
0.01 micron
10 microns

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

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

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Machine Design
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

Equal to
None of these
Greater than
Less than

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Machine Design
A leaf spring in automobiles is used

To store strain energy
To absorb shocks
To measure forces
To apply forces

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Machine Design
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as

T/sec³φ
T sec²φ
T cosecφ
T sec³φ

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Machine Design
In Vickers hardness testing, the pyramid indentor apex is

152°
122°
40°
136°

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