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Machine Design

Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

4
43832
2
1

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Machine Design
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

15
25
17
21

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Machine Design
If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited

Square
Buttress
BSW
Acme

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Machine Design
Which of the following screw thread is used for power transmission in one direction only?

Acme threads
Square threads
Buttress threads
Multiple threads

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Machine Design
Which of the following material has the maximum ductility?

Zinc
Aluminium
Copper
Mild steel

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Machine Design
Pick up wrong statement. Fatigue strength can be increased by

Cold working
Shot peening
Hot working
Grinding and lapping surface

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