Machine Design
For longitudinal joint in boilers, the type of joint used is

Lap joint with one ring overlapping the other
Butt joint with single cover plate
Any one of the above
Butt joint with double cover plate

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
A bolt of M 24 × 2 means that

The effective diameter of bolt is 24 mm and there are 2 threads per cm
Cross-sectional area of the threads is 24 mm²
The pitch of the thread is 24 mm and depth is 2 mm
The nominal diameter of bolt is 24 mm and pitch is 2 mm

ANSWER DOWNLOAD EXAMIANS APP