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Machine Design

Machine Design
In most machine members, the damping capacity of the material should be

High
Zero
Could be anything
Low

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Machine Design
A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

2136 N-m
2050 N-m
2000 N-m
2100 N-m

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Machine Design
A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called

Castle nut
Jam nut
Sawn nut
Ring nut

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Machine Design
In the levers of __________ type, the mechanical advantage is less than one.

Second
None of these
Third
First

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Machine Design
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to (Where, Pc = tension in belt due to centrifugal force)

2 Pc
Pc/3
1 Pc
3 Pc

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Machine Design
In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be

0.98
0.99
0.96
0.97

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