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/2
τ
4 τ

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Which is correct statement?

Both will be equally rigid
A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
Which one is rigid will depend on several other factors
A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In cross or regular lay ropes

Direction of twist of wires and strands are same
Wires are not twisted
Wires in two adjacent strands are twisted in opposite direction
Direction of twist of wires in strands is opposite to the direction of twist of strands

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Machine Design