Machine Design
A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

2136 N-m
2100 N-m
2000 N-m
2050 N-m

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Machine Design
The effective stress in wire ropes during normal working is equal to the stress due to

Acceleration/retardation of masses plus stress due to bending
Axial load plus stress due to acceleration/retardation
Axial load plus stress due to bending
Bending plus stress due to acceleration/retardation

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