Shaft Design

1.     According to ASME code, maximum allowable shear stress is taken as X% of yield strength or Y% of ultimate strength.

• X = 30, Y = 18

• X = 30, Y = 30

• X = 18, Y = 18

• X = 18, Y = 30

Is this conversion correct?

1 MPa = 1 N/mm²

If yielding strength = 400 MPa, find the permissible shear stress according to ASME standards.

• 72 MPa

• 76 MPa

• 120 MPa

• 268 MPa

Does ASME standard take into consideration shock and fatigue factors?

• Yes

• No

The minimum permissible shear stress is given as 106 MPa. If keyways are presence to the shaft, calculate the maximum shear stress.

• 15.5 MPa

• 26.5 MPa

• 37.1 MPa

• 79.5 MPa

What force are required to calculate the torque at gear?

• Radial force

• Tangential force

• Axial force

• Transverse force

When the shaft is subjected to pure bending moment,

the bending stress is given by?

• None of the listed