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Machine Design

Machine Design
In a marine flange coupling, the thickness of flange is taken as

d/4
d/2
d/3
3d/4

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Machine Design
Screws used for power transmission should have

Low efficiency
Very fine threads
Strong teeth
High efficiency

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Machine Design
Taper usually provided on cotter is

1 in 5
1 in 40
1 in 10
1 in 24

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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

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

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Machine Design
The longitudinal joint in boilers is used to get the required

Length of boiler
Efficiency of boiler
Length and diameter of boiler
Diameter of boiler

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Machine Design
The notch angle of the Izod impact test specimen is

10°
45°
30°
20°

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MORE MCQ ON Machine Design

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