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Machine Design

Machine Design
The size of a gear is usually specified by

Pitch circle diameter
Pressure angle
Diametral pitch
Circular pitch

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Machine Design
If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by

p/ZN
Z/pN
N/Zp
ZN/p

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

Equal to
None of these
Less than
Greater than

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Machine Design
The crest diameter of a screw thread is same as

Minor diameter
Pitch diameter
Core diameter
Major diameter

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Machine Design
The spring mostly used in gramophones is

Flat spiral spring
Conical spring
Helical spring
Volute spring

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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
Medium bearing
Short bearing
Long bearing

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