Welding Metallurgy MCQ Questions and Answers | Metallurgical Engineering Page-4 section-1

31.
Flux in welding process acts as

A. catalyst

B. protective agent

C. filler

D. heat generator

Answer & Solution Discuss in Board Save for Later

32.
In multipass are welds shot peening is done after each pass to

A. close the surface porosity

B. break the continuity of columner grains

C. flatten the weldment

D. introduce texture in the weld

Answer & Solution Discuss in Board Save for Later

33.
The titanium alloys are welded using the following process.

A. TIG welding

B. Submersible arc welding

C. Butt welding

D. Electron beam welding

Answer & Solution Discuss in Board Save for Later

34.
Arc welding is done using current, voltage and welding speed of 200 A, 20 V and 0.01 m/s, respectively. The heat input in KJ per unit length is

A. 100

B. 200

C. 300

D. 400

Answer & Solution Discuss in Board Save for Later

35.
The order of decreasing weldability among the following steel is
P. Fe-0.6% C
Q. Fe 0.4% C
R. HSLA

A. R ⟶ Q ⟶ P

B. P ⟶ Q ⟶ R

C. Q ⟶ P ⟶ R

D. Q ⟶ R ⟶ P

Answer & Solution Discuss in Board Save for Later

36.
For better resistance welding, the metal must have
P. high electrical resistivity and low melting point
Q. high thermal conductivity
R. high electrical resistivity and high melting point
S. low thermal conductivity

A. P, Q

B. P, S

C. R, Q

D. R, S

Answer & Solution Discuss in Board Save for Later

37.
Two sheets of iron and copper of equal thickness are welded together into one sheet. Iron is in contact with water at 298 K and copper is in contact with steam at 373 K. At steady state, the temperature profile within the sheet will be

A. parabolic

B. hyperbolic

C. combination of two separate linear profiles in copper and iron

D. combination of two separate parabolic profiles in copper and iron

Answer & Solution Discuss in Board Save for Later

Welding Metallurgy MCQ Questions and Answers | Metallurgical Engineering

31. Flux in welding process acts as

Answer & Solution

32. In multipass are welds shot peening is done after each pass to

Answer & Solution

33. The titanium alloys are welded using the following process.

Answer & Solution

34. Arc welding is done using current, voltage and welding speed of 200 A, 20 V and 0.01 m/s, respectively. The heat input in KJ per unit length is

Answer & Solution

35. The order of decreasing weldability among the following steel is P. Fe-0.6% C Q. Fe 0.4% C R. HSLA

Answer & Solution

36. For better resistance welding, the metal must have P. high electrical resistivity and low melting point Q. high thermal conductivity R. high electrical resistivity and high melting point S. low thermal conductivity

Answer & Solution

37. Two sheets of iron and copper of equal thickness are welded together into one sheet. Iron is in contact with water at 298 K and copper is in contact with steam at 373 K. At steady state, the temperature profile within the sheet will be

Answer & Solution

31.
Flux in welding process acts as

32.
In multipass are welds shot peening is done after each pass to

33.
The titanium alloys are welded using the following process.

34.
Arc welding is done using current, voltage and welding speed of 200 A, 20 V and 0.01 m/s, respectively. The heat input in KJ per unit length is

35.
The order of decreasing weldability among the following steel is
P. Fe-0.6% C
Q. Fe 0.4% C
R. HSLA

36.
For better resistance welding, the metal must have
P. high electrical resistivity and low melting point
Q. high thermal conductivity
R. high electrical resistivity and high melting point
S. low thermal conductivity

37.
Two sheets of iron and copper of equal thickness are welded together into one sheet. Iron is in contact with water at 298 K and copper is in contact with steam at 373 K. At steady state, the temperature profile within the sheet will be