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Machine Design

Machine Design
The suitable material for belt used in flour mill is

Canvas or cotton duck
Balata gum
Rubber
Leather

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Machine Design
In designing a key, it is assumed that the distribution of forces along the length of key

Is uniform throughout
Varies exponentially, being more at the torque-input end
Varies linearly
Varies exponentially, being less at the torque-input end

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Machine Design
The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as

(Kt - 1)/ (Kf - 1)
(Kf + 1)/ (Kt + 1)
(Kf - 1)/ (Kt - 1)
(Kt + 1)/ (Kf + 1)

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Machine Design
In standard taper roller bearings, the angle of taper of outer raceway is

8°
15°
25°
5°

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Machine Design
A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

1 kN-m
2 kN-m
4 kN-m
3 kN-m

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Machine Design
Resistance to fatigue of a material is measured by

Endurance limit
Coefficient of elasticity
Young's modulus
Elastic limit

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MORE MCQ ON Machine Design

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