QUIZ) ASNT L3 BASIC 11

 

 

 

201. Green sand casting molds include

a. sand clay and water

b. sand wax and solvent

c. sand refractory metals and water

d. sand carbon green clay

202. Small metal supports used to support and position cores become part of a casting by fusing with the molten

metal. Such devices are called

a. core hangers b. chills c. chaplets d. risers

203. for checking the wear or clearance of ball in steel valve?

a. NRT

b. MT

c. PT

d. UT

204. What is shielding?

a. shielding is thermal protection from the welding process

b. shielding is protection from radioactivity present during the welding process

c. shiedling is the technique of blanketing the welding area with gases or fluxes which exclude harmful

atmospheric chemicals

205. What is the difference between discontinuities and defects?

a. a defect is a rejectable discontinuity

b. discontinuities deal with base metal where as defects deal with weld metal

c. where should be no distinction between discontinuities and defects

206. where does the gas which causes porosity come from?

a. gas used in the welding process

b. gas released from chemical reactions occurring during the welding process

207. Porosity, mis-runs, cold lap, hot tears and inclusions are examples of defects resulting from which of the

following processes?

a. forging b. grinding c. casting d. haet treatment

208. Which of the following is uncorrect in the property of Ti and Al alloy?

a. Ti alloy is stronger than Al alloy

b. Ti alloy has lower melting point than Al alloy

c. Ti alloy is 60% heavier than Al alloy

d. Ti alloy has stronger corrosion resistance than Al alloy

209. Which of the following is not a strong point of brazing?

a. low cost because joint fit-up is sloppy

b. possible to weld very tin plate

c. possible to weld dissimilar metals

d. possible to weld multiple joint simultaneously in furnace

210. Which is not used for brazing welding & welding?

a. carbon steel & Cu b. carbon steel & cast iron

c. carbon steel & Ni alloy d. carbon steel & Al

211. Which results from restricted contraction of solidification?

a. hot shut b. cold shut c. hot tear d. fusion crack

212. Which is the testing method of most soldering joint?

a. UT b. VT c. RT d. destructive testing

213. Which of the following inherent discontinuities are associated with the forging process?

a. bursts, laps, cracks and flakes

b. bursts, laminations, scoring & inclusions

c. shrinkage, cracks, pipe and flakes

d. cracks, seams, laps and laminations

214. Which of the following is not a solid state welding?

a. forging welding b. diffusion welding c. cold cells d. brazing welding

215. Which is equipment to measure local deformation of structure?

a. fatigue gage b. stress gage c. load cells d. strain gage

216. Which is the result of shot peening?

a. it neceives compressive residual stress

b. it neceives contraction residual stress

217. Which is a surface treatment to reduce chemical activity?

a. hydrogenation b. activation c. nartemizing d. passivation

218. Which is the type of grinding crack

a. wave-like b. widly spread c. lattice work d. straight line

219. Which is unnecessary of heat input?

a. rolling b. speening c. coining d. sintering

220. Which process is used to machine ductile material into comples and long parts?

a. forging b. powder metallurgy c. extrusion d. die casting

 

 

 

 

 

 

 

 

ANSWER

201	202	203	204	205	206	207	208	209	210
A	C	A	C	A	B	C	B	A	D
211	212	213	214	215	216	217	218	219	220
C	B	A	D	D	A	D	C	B	B