Machine Design
When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

(1/2) × √(M² + T²)
M + √(M² + T²)
(1/2) × [M + √(M² + T²)]
√(M² + T²)

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Machine Design
Which of the following statement is wrong for a connecting rod?

If Ixx > 4 Iyy, the buckling will occur about Y-axis
The most suitable section for the connecting rod is T-section
The connecting rod will be equally strong in buckling about X-axis and Y-axis, if Ixx = 4 Iyy
If Ixx < 4 Iyy, the buckling will occur about X-axis

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Machine Design
Slenderness ratio is the ratio of

Effective length of column to least radius of gyration of the column
Width of column to depth of column
Effective length of column to width of column
Maximum size of column to minimum size of column

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