Machine Design
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

2 τ
τ
τ/2
4 τ

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
The elasticity is the property of a material which enables it to

Regains its original shape after deformation when the external forces are removed
Retain deformation produced under load permanently
Draw into wires by the application of a tensile force
Resists fracture due to high impact loads

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Machine Design