Chapter 13 & 14

Question 1

131. During welding, the electrode covering extends beyond the metal core and serves:

A) to insulate the molten metal against the air
B) to spread out the arc stream
C) as the filler metal for the weld
D) to direct and concentrate the arc stream
E) to prevent slag formation

Answer 1

A) to insulate the molten metal against the air

Question 2

132. A typical low hydrogen rod is:

A) E-7014
B) E-6010
C) E-7018
D) E-6011
E) E-6013

Answer 2

C) E-7018

Question 3

133. According to the AWS classification system for low carbon steel electrodes, and using E7018 as the example, what does the “E” signify?

A) electric arc welding
B) electrode
C) every use
D) current and polarity

Answer 3

B) electrode

Question 4

134. According to the AWS classification system for low carbon steel electrodes, and using E7018 as the example, what does the “70” signify?

A) welding position
B) tensile strength
C) electrode coating, current and polarity
D) metal thickness

Answer 4

B) tensile strength

Question 5

135. According to the AWS classification system for low carbon steel electrodes,and using E7018 as the example, what does the “1” signify?

A) welding position
B) tensile strength
C) electrode coating, current and polarity
D) metal thickness

Answer 5

A) welding position

Question 6

136. According to the AWS classification system for low carbon steel electrodes, and using E7018 as the example, what does the “8” signify?

A) welding position
B) tensile strength
C) electrode coating, current and polarity
D) metal thickness

Answer 6

C) electrode coating, current and polarity

Question 7

137. The submerged arc welding process (SAW) is a high deposition, high quality welding process widely used to join _____ sections in the flat horizontal position.

A) thin
B) thick
C) butt
D) beveled

Answer 7

B) thick

Question 8

138. In submerged arc welding, the arc is not visible to the operator since it:

A) produces an excessive amount of slag
B) takes place in the flux feeder tube
C) requires a full helmet be worn
D) takes place below the flux
E) must be done in the dark

Answer 8

D) takes place below the flux

Question 9

139. In submerged arc welding, the electrode is:

A) fed continuously from a coiled spool
B) covered with a cellulose coating
C) covered with iron powder
D) made of finely crushed mineral
E) known as flux

Answer 9

A) fed continuously from a coiled spool

Question 10

140. Flux is:

A) a substance to decrease the applied voltage
B) a substance to remove oxides and impurities
C) a substance on the electrode to protect it from moisture and rusting
D) a substance applied to the inside of a pipe joint to aid alignment
E) a substance to shield the weld from the atmosphere

Answer 10

B) a substance to remove oxides and impurities

Question 11

141. _____ welding keeps the atmosphere from the weld bead by a blanket of granular flux.

A) fusion
B) shielded metal arc
C) machine
D) submerged arc
E) manual

Answer 11

D) submerged arc

Question 12

142. The _____ joins metal by the heat of an arc between a nonconsumable tungsten electrode and the work piece, with or without the addition of filler metal.

A) submerged arc welding process (SAW)
B) gas tungsten arc welding process (GTAW)
C) gas metal arc welding process (GMAW)
D) reverse metal arc welding process (RMCW)

Answer 12

B) gas tungsten arc welding process (GTAW)

Question 13

143. GTAW is particularly suited to the welding of _____ metals.

A) similar
B) exotic
C) dissimilar
D) cast

Answer 13

C) dissimilar

Question 14

144. The _____ is an arc welding process, which produces the fusion of metals by heating them with an arc between a continuous filler metal (consumable) electrode and the work.

A) submerged arc welding process (SAW)
B) gas tungsten arc welding process (GTAW)
C) gas metal arc welding process (GMAW)
D) reverse metal arc welding process (RMCW)

Answer 14

C) gas metal arc welding process (GMAW)

Question 15

145. _____ is the only arc welding process capable of welding all commercial ferrous and non ferrous alloys.

A) submerged arc welding process (SAW)
B) gas tungsten arc welding process (GTAW)
C) gas metal arc welding process (GMAW)
D) reverse metal arc welding process (RMCW)

Answer 15

C) gas metal arc welding process (GMAW)

Question 16

146. The arc and molten weld metal is protected from the atmosphere by a flow of _____ or reactive gas.

A) air
B) inert
C) non inert
D) hydrogen

Answer 16

B) inert

Question 17

147. The GMAW process is well suited to the _____ passes, on pipe welding.

A) final
B) mid
C) root
D) under

Answer 17

C) root

Question 18

148. On pipe larger than 51 mm, the ends are normally _____ welded together.

A) lap
B) butt
C) electrode
D) fit

Answer 18

B) butt

Question 19

149. During the process of welding, _____ are set up in both the weld metal and in the base metal, adjacent to the weld.

A) stresses
B) cracks
C) inclusions
D) checks

Answer 19

A) stresses

Question 20

150. One of the ways to minimize _____ in the welded joint is to preheat the parts to be welded.

A) cracks
B) stresses
C) inclusions
D) checks

Answer 20

B) stresses

Question 21

151. Postweld heat treatment, often called _____ relieving, consists of uniformly heating the welded parts to a temperature sufficient to relieve most of the stresses created by the welding process.

A) cracks
B) stresses
C) inclusions
D) checks

Answer 21

C) inclusions

Question 22

152. _____ is a melting away of the parent metal which can alter reduce the thickness of the welded joint.

A) fusion
B) undercut
C) overlap
D) underfill

Answer 22

B) undercut

Question 23

153. Lack of _____, or more precisely, incomplete joint penetration, is a group of weld discontinuities where fusion did not occur between weld metal and the base metal or between overlapping weld beads.

A) fusion
B) undercut
C) overlap
D) underfill

Answer 23

A) fusion

Question 24

154. _____ is an excess of deposit metal, which is not fused to the base metal.

A) fusion
B) undercut
C) overlap
D) underfill

Answer 24

C) overlap

Question 25

155. _____ is insufficient weld deposit, resulting in a reduction in the thickness of the groove. A) fusion B) undercut C) overlap D) underfill

Answer 25

D) underfill

Question 26

156. _____ is spherical or tubelike defects, cavities, or voids caused by gases trapped inside the weld axes that have evolved to the surface. A) porosity B) slag inclusions C) cracks D) checks

Answer 26

A) porosity

Question 27

157. _____ are solid non metallic inclusions entrapped below the surface in the weld metal or more often, between deposited weld metal and the base metal. A) porosity B) slag inclusions C) cracks D) checks

Answer 27

B) slag inclusions

Question 28

158. Planar type defects, such as _____ and lack of fusion, are sharp and pointed in shape and create severe notching and high potential for failure. A) porosity B) slag inclusions C) cracks D) checks

Answer 28

C) cracks

Question 29

159. To ensure the electrodes function as designed, they must be kept in baking ovens to remove any _____. A) hydrogen B) moisture C) carbon D) inert

Answer 29

B) moisture

Question 30

160. A _____ is a non destructive test method that shows defects in the interiors of the welds that would not be visible to the eye. ``` A) dye penetrant test B) tensile test C) bending test D) radiographic inspection E) ultrasonic inspection ```

Answer 30

D) radiographic inspection

Question 31

161. _____ makes use of short wavelength radiations such as X-rays and gamma rays to penetrate the weld. ``` A) ultrasonic inspection B) radiographic inspection C) tensile testing D) dye penetrant testing E) binding testing ```

Answer 31

B) radiographic inspection

Question 32

162. A dye penetrant test will show up: ``` A) porosity B) interior defects C) inclusions D) cracks and faults E) undercutting ```

Answer 32

D) cracks and faults

Question 33

163. _____ involves directing high frequency sound waves into the metal to detect fine cracks and defects. ``` A) dye penetrant testing B) radiographic inspection C) gamma ray inspection D) tensile testing E) ultrasonic inspection ```

Answer 33

E) ultrasonic inspection

Question 34

164. Magnetic particle testing (MT) is an _____ technique for detecting flaws that are either surface, or subsurface. A) nondestructive B) destructive C) radiographic D) ultrasonic

Answer 34

A) nondestructive

Question 35

165. Where a person intends to construct, alter or repair any boiler, pressure vessel, fitting or pressure piping system by welding, he shall comply with the requirements of the ASME boiler and pressure vessel code, section IX welding and brazing qualifications, as adopted in section 5(1)(d) of this regulation. A) true B) false

Answer 35

A) true

Question 36

166. The _____ must present a pressure welder's certificate of competency, as proof of eligibility to take the performance qualification test. A) welder B) manufacturer C) owner D) operator

Answer 36

A) welder

Question 37

167. _____ are intended to determine the ability of welders and welding operators to make sound welds. ``` A) tensile tests B) bending tests C) usual inspections D) hydrostatic tests E) performance qualification tests ```

Answer 37

E) performance qualification tests

Question 38

168. Procedure qualification destructive tests are laid out in: ``` A) section I of the ASME code B) section VII of the ASME code C) section IX of the ASME code D) section IV of the ASME code E) the CSA b51 ```

Answer 38

C) section IX of the ASME code

Question 39

169. When a welder passes the required test, as set out in the ASME code, he is issued with a: ``` A) journeyman's welding ticket B) power engineering certificate C) performance qualification card D) pressure welder's certificate E) manufacturer's license ```

Answer 39

C) performance qualification card