21 What is the name of the weld joint?
a) Lap joint
b) Butt – joint
c) Tee – joint
d) Outside corner joint
22 What is the name of the part marked ‘X’ in the purging arrangement pipe joint?
a) Pipe
b) Joint
c) Plywood
d) Purging gas inlet
23 What is the name of the defect if the pin holes occur in GTAW process?
a) Cracking
b) Porosity
c) Under cut
d) Lack of penetration
24 What is the name of the defect in the weld?
a) Porosity
b) Incomplete penetration
c) Lack of fusion
d) Under cut
25 Which method is low cost for cutting stainless steel?
a) Drilling
b) Gas cutting
c) Hacksawing
d) Plasma arc cutting
26 What is the name of the part marked ‘X’ in dual flow plasma arc welding?
a) Electrode
b) Orifice gas
c) Shielding gas
d) Constructing nozzle
27 In which of the following welding process, the deposit rate and speed is high?
a) Submerged arc welding
b) MIG welding
c) MAG welding
d) TIG welding
28 Which welding process is limited to flat and horizontal position?
a) TIG welding
b) MIG welding
c) Submerged arc welding
d) Flux cored arc welding
29 Which type of thermit contains a mixture of finely divided aluminium and iron oxide?
a) Rail welding thermit
b) Forging thermit
c) Cast iron thermit
d) Plain thermit
30 In which of the following welding process, the plates of 25 mm or more can be joined in one pass?
a) Electro slag welding
b) Thermit welding
c) MAG welding
d) Submerged arc welding
Welder