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Machine Design

Machine Design
A transmission shaft includes

Counter shaft
Line shaft
Over head shaft
All of these

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Machine Design
When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

√(Pmax / m)
√(Pmax / 3m)
√(3m /Pmax)
√(Pmax / 2m)

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

Cold working
Shot peening
Grinding and lapping surface
Hot working

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

Crimped
Flared
Honed
Bent

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Machine Design
An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by

Decreasing the modulus of elasticity of the bar
All of these
Decreasing the cross-sectional area of the bar
Increasing the length of bar

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Machine Design
Lewis equation in gears is used to find the

Tensile stress in bending
Shear stress
Compressive stress in bending
Fatigue stress

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MORE MCQ ON Machine Design

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