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Machine Design

Machine Design
The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

None of these
More than
Equal to
Less than

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Machine Design
The width of the pulley should be __________ width of the belt.

Less than
Greater than
None of these
Equal to

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Machine Design
The connecting rod bolts are tightened up with initial tension greater than the external load so that

The resultant load on the bolt would not be affected by the external cyclic load
Joint may not open up
Bolts are weakest elements
Bolts will not loosen during service

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Machine Design
Stress concentration in cyclic loading is more serious in

Brittle materials
Depends on other factors
Ductile materials
Equally serious in both cases

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Machine Design
In the assembly of pulley, key and shaft

Key is made the strongest
Key is made the weakest
All the three are designed for equal strength
Pulley is made the weakest

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Machine Design
Lewis equation is applied

To weaker of the pinion or gear
Only to the gear
Only to the pinion
To stronger of the pinion or gear

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