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Mechanical engineering Questions and solutions set - 1

Mechanical engineering Questions and solutions set - 1
Question:-
Option (A)
100
Option (B)
250
Option (C)
500
Option (D)
1000
Correct Option:
B
Question Solution:
Hoop stress, = = 250MPa
Question:-
Option (A)
0
Option (B)
1
Option (C)
2
Option (D)
Correct Option:
A
Question Solution:
For, perfectly plastic collision, co – efficient of restitution = 0
Question:-
Option (A)

body centered cubic

Option (B)

face centered cubic

Option (C)

hexagonal closed packed

Option (D)

body centered tetragonal

Correct Option:
B
Question Solution:

Austenite has FCC Crystal structure.

Question:-
Option (A)
Gas metal arc welding
Option (B)
Submerged arc welding
Option (C)
Gas tungsten arc welding
Option (D)
Flux coated arc welding
Correct Option:
C
Question Solution:
Gas tungsten arc welding user a non – consumable electrode made of tungsten.