Machine Design
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

Between 20d and 30d
Greater than 30d
Less than 20d
Equal to inside diameter of pipe

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take care of

Combined effect of transverse shear stress and curvature of wire
Combined effect of bending stress and curvature of the wire
Combined effect of transverse shear stress and bending stress in the wire
Combined effect of torsional shear stress and transverse shear stress in the wire

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Turn buckle has

Right hand threads on bout ends
Left hand threads on one end and right hand threads on other end
Left hand threads on both ends
No threads

ANSWER DOWNLOAD EXAMIANS APP