d. Self emuslifying 29. Which of the items listed below is a penetrant test method? disadvantage of using the liquid a. The method cannot find discontinuities that are not opened to the surface b. The method is simple in principle and relatively easy to understand c. The method is essentially simple in application d. There are few limitations on the size and shape of the article that can be treated by this method 30. Which of the statements below applies to the liquid penetrant method of testing? a. The penetrant test method is less flexible than the eddy current test method b. The penetrant test method is less reliable than the magnetic particle method for finding surface defects in ferromagnetic materials c. The penetrant test method will not detect fatigue cracks d. The penetrant test method is more reliable than radiographic testing when attempting to detect minute surface discontinuities 31. Which of the following types of discontinuities cannot be detected by the liquid penetrant test method? a. Surface laminations b. Internal forging bursts c. Surface cracks d. Surface laps 32. Developer assists in the detection of discontinuities by: a. Providing a contrasting background b. Emulsifying the penetrant bleedout c. Providing a clean surface d. Providing a dry surface 33. Difficulties with removal of a post emulsifiable penetrant during the rinse operation can be overcome by: a. Reapplying a coating of emulsifier b. Using conditioned (soft)water during the washing operation c. Cleaning, then completely emulsification time d. Increasing the water temperature during the washing operation 34. Excessive removal of penetrant may result in: a. Undetected discontinuities during evaluation b. An excessive background that inhibits the evaluation process c. The need to apply the developer twice to obtain significant bleedout d. Small, tight cracks that are easily detected on parts with a smooth surface 35. Which of the following is an advantage of a fluorescent water washable penetrant system compared to a fluorescent post emulsifiable penetrant system: a. Water washable is superior for testing critical in service parts b. Water washable has fewer processing steps c. Only wet developer may be used with post emulsifiable penetrants d. Water washable penetrants will more readily detect fine , tight cracks in weldments 36. Which of the following is not an advantage of post emulsifiable fluorescent penetrants: a. High sensitivity level to detect very fine defects