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Machine Design

Machine Design
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be

24
12
18
14

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Machine Design
The product of the diametral pitch and circular pitch is equal to

π
π × number of teeth
1/π
1

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Machine Design
The V-belts are particularly suitable for __________ drives.

Short
Both A and B
Long
None of these

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Machine Design
In order to permit the thermal expansion/contraction of tubing, it should be

Honed
Bent
Crimped
Flared

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Machine Design
Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to

W/2
W/9
2W/3
8W/9

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Machine Design
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a

Square bearing
Short bearing
Medium bearing
Long bearing

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