A Best Way To Crack Gorenment Job Exams

Mechanical Engineering Objective Questions { Production Technology }

8. Following gases are used in tungsten inert gas welding
A.Hydrogen and oxygen
B.Argon and helium
C.Argon and neon
D.Helium and neon
Discuss in Forum

9. In, resistance welding, the pressure is released
A.Just at the time of passing the current
B.After completion of current
C.After the weld cools
D.During heating period
Discuss in Forum

10. In arc welding, arc is created between the electrode and work by
A.Flow of current
C.Material characteristics
D.Contact resistance
Discuss in Forum

11. It is not possible to arc weld all types of metals with transformer set because it does not have provision for
A.Control of current
B.Control of voltage
C.Control of time duration (a) change of polartiy (e) all of the above.
D.15.18. Two sheets of same material' but different thickness can be butt welded by
Discuss in Forum

12. Best reason to decide use of welding in preference to riveting for structural work on extension to a hospital could be
A.It is cheaper
B.It is convenient
C.It produces rigid structure
D.(a) it is quieter
Discuss in Forum

13. Plug weld joint is used
A.Where longitudinal shear is present
B.Where severe loading is encountered and the upper surfaces of both pieces must be in the same plane
C.To join two pieces of metal in tile same manner as rivet joint metals
D.There is nothing like plug weld joint
Discuss in Forum

14. Pick up the incorrect statement about MIG welding
A.No flux required
B.High welding speed
C.Increased corrosion resistance
D.Even unclean surface can be welded to obtain sound welds
Discuss in Forum

Page 2 of 139

« 1  2  34 »