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

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
When the shaft rotates in anticlockwise direction at high speed in a bearing, it will

Move towards right of the bearing making metal to metal contact
Move towards left of the bearing making metal to metal contact
Move towards right of the bearing making no metal to metal contact
Have contact at the bottom most of the bearing

ANSWER DOWNLOAD EXAMIANS APP