QUIZ) ASNT L3 BASIC 17

321. in a direct current magnetic particle test of a 1" thick carbon steel weld using prods 5" part what minimum

current will be needed?

a. 50 ampere

b. 150 ampere

c. 350 ampere

d. 500 ampere

322. the general method of producing X-rays involves the sudden deceleration of high velocity electrons in a solid

body called a

a. focus cup b. target c. filament d. cathode

323. the penetrating ability of an X-ray beam is governed by

a. kilovoltage or wavelength

b. time

c. milliamperage

d. source-to-film

324. which of the following the source providing the most penetrating radiation is

a. cobalt 60 b. 220 KVP X-ray tube

c. 15 MeV betatron d. electrons from iridium 192

325. short wavelength electromagnetic radiation produced during the disintegration of radioactive substances is

called

a. X-radiation b. gamma radiation c. scatter radiation d. beta radiation

326. which of the following X-ray generators would produce the narrowest cone of X- radiation?

a. 10 MeV b. 15 MeV c. 25 MeV d. 1 MeV

327. the ability of matter to attract other matter to itself is a phenomenon associated with

a. field strength b. magnetism c. coercive force d. pole strength

328. when testing a bar with an L/D ratio of four in a ten-turn coil the required current would be

a. 1125 amperes b. 18,000 amperes c. 45,000 amperes d. unknown

329. the scattering of the rays of an ultrasonic beam due to reflection from a highly irregular surface in called

a. angulation b. dispersion c. refraction d. diffusion

330. which of the following modes of vibration will produce the shortest wavelength pulse at a given frequency

and in a given material?

a. longitudinal b. compression c. shear d. surface

331. the formula (sin A / sin B) = (V1 / V2) is referred to as

a. the acoustical impedance ratio formula

b. the phase conversion formula

c. fresnel zone formula

d. snell's law

332. CP-189 states that Recertification of Level I & II personnel is?

a. permitted by examination only

b. required every 5 years.

c. not required and may be waived by the employer

333. one of the most common applications of ultrasonic tests employing shear waves is

a. detection of discontinuities in welds tubes and pipe

b. determination of elastic properties of metallic products

c. detection of laminar discontinuities in heavy plate

d. measuring thickness of thin plate

334. generally the best ultrasonic testing method for detecting discontinuities oriented along the fusion zone in

welded plate is

a. an angle-beam contact method employing surface waves

b. a contact test using a straight longitudinal wave

c. an angle-beam method using shear waves

335. the most efficient sound transmitter of the piezoelectric materials listed below is

a. lithium sulfate b. barium titanate c. quartz d. silver oxide

336. the most efficient receive of the piezoelectric materials listed below is

a. lithium sulfate b. barium titanate c. quartz d. silver oxide

337. of the following the most sensitive technique of penetrant inspection for locating shallow open cracks is

a. water washable fluorescent penetrant

b. post emulsification fluorescent penetrant

c. water emulsifiable visible dye penetrant

d. solvent removable visible dye penetrant

338. a continuous linear indication would usually be caused by which of the following discontinuities?

a. porosity b. slag inclusions c. pitting d. cracking

339. of the methods listed below the most effective means of pre-cleaning a test item prior to a penetrant test is

a. vapor degreasing

b. detergent cleaning

c. steam cleaning

d. solvent wiping

340. techniques associated with the eddy current test method may be used for which one of these applications?

a. determining the state of heat treatment in 70 50 Al

b. finding unbonded areas in roll-clad AI plate

c. detection of fine cracks throughout a two and one half inch thick titanium plate

d. determining the thickness of a lately paint coating on a one inch thick acrylic resin panel

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWER

321	322	323	324	325	326	327	328	329	330
D	B	A	C	B	C	B	A	B	D
331	332	333	334	335	336	337	338	339	340
D	A	A	C	B	A	B	D	A	A