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Machine Design

Machine Design
The pitch diameter is the __________ diameter of an external or internal screw thread.

Largest
Smallest
Effective
None of these

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Machine Design
Which of the following statement is correct for gears?

All of these
The pitch circle diameter is equal to the product of module and number of teeth
The addendum is less than dedendum
The pitch circle is always greater than the base circle

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Machine Design
In block brakes, the ratio of shoe width to wheel diameter is taken between

0.25 and 0.50
0.75 and 1
0.50 and 0.75
0.1 and 0.25

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Machine Design
A screw is said to be over hauling screw, if the

Efficiency of screw is 100%
Friction angle is less than helix angle
Friction angle is equal to helix angle
Friction angle is more than helix angle

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Machine Design
A chain drive transmits __________ power as compared to belt drive.

Less
None of these
Same
More

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Machine Design
In a butt welded joint, the size of weld is __________ the throat of weld.

2 times
Equal to
Double
0.5 times

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