QUIZ) ASNT L3 BASIC 15

281. eddy current testing of a material consert?

a. measure its conductivity b. detect small, near surface discontinuity

c. measure its ductility d. measure its magnetic permeability

282. in angle beam ultrasonic testing of plate the defect most probably undetectable would be

a. cracks which are perpendicular to the sound-wave

b. inclusions which are randomly oriented

c. cracks which are parallel to the plate’s surface

d. a series of small discontinuities located close to one another

283. heat energy may be transferred from one point to another by conduction, convection, radiation. What drivers

the energy transfer in all case

a. difference temperature

b. press difference

c. emission force

d. energy wave length

284. The employer's certification procedure in accordance with CP-189 shall be?

a. approved by a level III

b. approved by the employer's designed level III

c. written be a level III

d. only written by an employer designed level III

285. when maintenance inspection using the magnetic particle test method is performed on parts which have

been in service the most probable type of defect being sought is

a. porosity b. cracks c. lack of penetration d. shrinkage

286. the accumulation of magnetic particles at a site on a parts surface collected at and held to the site by a

magnetic leakage field is called

a. a discontinuity b. a defect c. an indication d. refection

287. the current required for circular magnetization of a steel bar is proportional to the

a. diameter of the bar

b. length of the bar

c. L/D ratio of the bar

d. L/D ratio times the number of coil turns

288. when penetrant examination is necessary for customer acceptance the examination should be done

a. after the completion of all operations which may cause or expose discontinuities

b. after completion of primary forming machining or welding operations but prior to final machining

c. after all operations regardless of the type of operation

d. immediately prior to shipping

289. in a rotaing shaft subjected to bending a change of section thick is a likely site for

a. corrosion

b. fretting corrosion

c. fatigue crack

d. erosion-corrosion

290. which liquid penetrant examination technique allows the use of a per-rinse operation to remove excess

penetrant?

a. water-washable

b. post-emulsifiable using bydrophilic materials

c. solvent removable

d. post-emulsifiable using hydrophilic materials

291. What is the primary purpose of a backing bar?

a. to eliminate slag

b. to assure proper alignment

c. to facilitate back up gas cverage

d. to allow sound root bead welds to be made

292. CP-189 states that all certifications will expire

a. at the end of three years

b. when the employee method becomes qualified and certified in a new NDT method

c. if an employee has not worked in the method for which certified in the past four months

d. when an employee leaves the employer where he has been certified

293. plate to be used in an aircraft wing is made form age hardenable AI alloy areas of high electrical conductivity

as determined by eddy current tests will identify areas of

a. low hardness

b. high hardness

c. high alloy content

d. part thickness increase

294. According to CP-189, a procedure for the control and administration of NDT personnel training, examination,

and certification

a. should reflect the guidelines set forth in SNT-TC-1A

b. shall be prepared by the employer

c. should be submitted to ASNT for approval

d. is a mandatory requirement of the U.S. government

295. as metals are held at high temperature ( to the melting point)

a. grows b. shrink c. melt d. become gaseous

296. corrosion-resistant steels having relatively high percentages of nickel and chromium are called

a. aluminum alloys b. forgings c. stainless steels d. cast steels

297. a casting process used to produce hollow products like large pipes and hollow shafts is

a. submerged arc welding b. extrusion casting

c. blow-melt cast d. centrifugal casting

298. stresses remaining in metals after cold- working or rapid cooling are called

a. residual stress b. strain-hardening

c. cyclic stress d. elastic stress

299. an undesirable by-product of steel-marking processes is

a. slag b. ingots c. chromium d. flux

300. in it's original shape, porosity in cast metal would appear

a. elongated b. irregular c. nearly round d. jagged

 

 

 

 

 

 

 

 

ANSWER

281	282	283	284	285	286	287	288	289	290
C	C	A	B	B	C	A	A	C	D
291	292	293	294	295	296	297	298	299	300
D	D	A	A	A	C	D	A	A	C