QUIZ) ASNT L3 BASIC 12

221. The method that can’t thest brazed joint?

a. RT b. UT c. ECT or MT d. LT

222. The method to measure young modules?

a. UT b. ECT c. MT d. RT

223. Fracture mechanics analysis is an established engineering analysis process which assumes that

a. all components an flaw free at the time of manufacture

b. all components an time flaw as a requirements for determining warranty

c. the number of flaws in a component is determined by the flaw index

d. all components contain flaw and the maximum size of the flaw that can be accepted for static loading is

dependent on the fracture toughness of the component material

224. In magnetic particle testing detection of deep-lying defects in a one-inch thick weld is

a. very similar to the detection of surface cracks

b. not difficult if the defect is attributable to fine non-metallic stringers

c. simple if the defect's width can be approximated

d. more of a problem than is the case of surface defects

225. Ultrasonic inspection of castings is often difficult because of

a. extremely fine grain structure

b. coarse grain structure

c. non-uniform flow lines

d. non-uniform solidification

226. which of the following is the most likely application of neutron radiography?

a. inspection stainless steel pistons for internal cracks

b. field inspection of a large pressure vessel for corrosion

c. inspecting small stainless steel valve assemblies for the presence of a rubber O-ring seal

d. inspecting small aluminum casting for core shift

227. The best technique for leak testing an on-line low pressure piping system containing a liquid refrigerant

would be

a. bubble test

b. pressure change test

c. halogen diode detector test

d. mass spectrometer test

228. A good means for locating deep-lying discontinuities by magnetic particle testing is to use half-wave rectified

AC with dry powder. Which combination of factors makes this so?

a. penetrating characteristics of AC and powder mobility of rectified AC

b. penetrating chareacteristics of DC and powder mobility of DC

c. low current characteristics of DC and powder mobility of AC

d. penetrating characteristics of DC and power mobility of AC

229. In shop magnetic particle inspection of small weldments the most versatile equipment is

a. one that can deliver both half-wave rectified and low voltage AC

b. straight DC from a welding power supply

c. AC-DC electromagnet or yoke

d. a storage battery with prods

230. In the absence of a reference specimen a preliminary test for detecting voids in a bonded structure would be

a. penetrant inspection

b. through transmission ultrasonic testing

c. shear wave ultrasonic testing

d. lamb wave ultrasonic testing

231. Which penetrant process is best suited for parts with rough surfaces?

a. water-washable

b. post-emulsification

c. visible dye

d. solvent removable

232. Penetrant inspection should be performed prior to which of the following processes?

a. heat treatment

b. passivating

c. etching

d. anodizing

233. Capillary action is a phenomenon in which liquids will enter and fill minute openings irrespective of cravity

This action depends upon?

a. molecular attraction

b. chemical covalence

c. electromagnetic attraction

d. static charge

234. The three major specimen parameters which influence eddy current testing are

a. electrical conductivity frequency and material geometry

b. density magnetic permeability and frequency

c. electrical conductivity magnetic permeability and material geometry

d. thermal conductivity electrical conductivity and magnetic permeability

235. phase vector diagrams are used in eddy current testing to show amplitude and phase relationships between

AC signals having the same

a. current b. resistance c. impedance d. frequency

236. An aluminum alloy has a resistivity of 3.44*10 Ohm-cm. If the conductivity of a copper standard is 0.58*10

mho/cm the the aluminum alloy has a conductivity closest to

a. 59% IACS

b. 54% IACS

c. 50% IACS

d. 46% IACS

237. Of the following gases which should not be used as a pressurizing medium for a pressure change test

a. oxygen b. nitrogen c. argon d. air

238. A special ball-check valve which has a stainless steel body and a nylon ball is leaking after a period of

service. Which of the following NDT methods would be most suitable to determine if the ball is worn crack or

jammed?

a. ultrasonic testing

b. radiographic testing

c. eddy currnet testing

d. neutron radiographic testing

239. Establishing differential pressure between test object and the environment is an essential element in which

of the following NDT methods?

a. X-ray diffaction

b. neutron radiography

c. leak testing

d. gamma radiography

240. It is derird to test a fabrication consisting of stainless steel castings welded together with stainless steel filler

wire and which are solution heat treated after welding. The section to be tested ranges from 1 inch to 15 inches

(2.5 cm to 38 cm) thick. Which of the following combinations of NDT methods would be most suitable for

testing the entire fabrication for surface and subsurface flaw?

a. ultrasonic and penetrant testing

b. radiographic and magnetic particle testing

c. eddy current and radiographic testing

d. radiographic and penetrant testing

 

 

 

 

 

 

ANSWER

 

221	222	223	224	225	226	227	228	229	230
C	B	D	D	B	C	C	D	A	B
231	232	233	234	235	236	237	238	239	240
A	D	A	C	D	C	A	D	C	D