Tempering

Question 1

The technique which does not aid in reducing residual stress is;
A) peening
B) thermal stress relief
C) external restraint

Answer 1

C) external restraint

Question 2

For plain carbon steels how are hardness and tensile strength related
A) increase Hardness;decrease tensile strength
B) increase hardness;increase tensile strength
C) decrease hardness; increase tensile strength

Answer 2

B) increase hardness; increase

       tensile Strength

Question 3

As the temperature of the base metal is decreased;
A) impact strength decreases
B) tensile strength increases
C) ductility decreases
D) hardness increases

Answer 3

As the temperature of the base metal is decreased;
A) impact strength decreases
B) tensile strength increases
C) ductility decreases
D) hardness increases

Question 4

Which of the following contains ferrous base metal specifications;

A) ASME section || part A
B) AWS A5.1

Answer 4

ASME Section || part A

Question 5

In general and increase in the carbon equivalent of a carbon steel will result in an increase in its;
A) ductility
B) hardness
C) toughness

Answer 5

B) hardness

Question 6

The material property that best describes its ability to withstand a static load is;
A) hardness
B) toughness
C) tensile strength

Answer 6

C) tensile strength

Question 7

The property of a material that best relates to its resistance to impact loading is;

A) endurance limit
B) fracture toughness

Answer 7

B) fracture toughness

Question 8

What MT technique could be used for the discovery of longitudinal flaws on a pipe using a stationary MT machine or bench unit?
A) coil shot
B) circular magnetization

Answer 8

B) circular magnetization

Question 9

During tempering as the temperature increases which of the following are correct:
A) hardly increases
B) hardness decreases

Answer 9

B) hardness decreases

Question 10

The use of preheat on a medium carbon steel weld test plate will preform all of the following except;
A) reduce distortion
B) result in the formation of martensite

Answer 10

B. result in the formation of martensite

Question 11

All welding symbols require which of the following basic elements in their construction;
A) reference line,arrow,and tail
B) reference line and arrow

Answer 11

B) reference line and arrow

Question 12

The surface of a member include in the groove of a weldment best describes;
A) root opening
B) groove face

Answer 12

B) groove face

Question 13

Which of the following is an example of an electrode classification number for GTAW;
A) EWTh-2
B) ER70S-2

Answer 13

Electrode!!!!!!

A)EWTh-2

Question 14

Which NDE method will best reveal subsurface porosity;
A) RT
B) UT
C) MT

Answer 14

A) RT

Question 15

A discontinuity is;

A) always rejectable
B) always a defect
C) an interruption in the uniformity of a weldment

Answer 15

C) an interruption in the uniformity of a weldment

Question 16

Which of the following measurements are taken from a tensil specimen to determine area;
A) length and thickness
B) width and thickness

Answer 16

B) width and thickness

Question 17

Toughness may be defined briefly as the ability of a metal to

A. Absorbed mechanical energy
B. Be hardened by heat treatment

Answer 17

A. Absorb mechanical energy