ASME MT-Ⅱ级基础试题(国外英语资料).docVIP

ASME MT-Ⅱ级基础试题(国外英语资料) mt Ⅱ级基础试题 asme filled in by the trainee. 下列各项由参加基础考试人填写. name: date: 姓名: 考试日期. filled in by the evaluator. 下列各项由参加评分人填写. score evaluator. 得分: 评分人姓名. 前20题, 每题3.5分, 共70分, 后10题, 每次3分, 共30分. 1. the magnetism may be beneficial. 剩余磁性有助于. a.in the deposition of weld metal. 焊接金属的沉积 b.in interpretation and evaluation of indications. 解释和评定显示 c.in demagnetization. 退磁 d. all of the above. 以上都是 2. an interruption in the normal physical structure or configuration of a part which produces an mt indication is called. 能形成磁粉显示的零件结构形状上的间断叫做. (a discontinuity. 不连续性 b. defect. 缺陷 c.an indication. 显示 d.distortion. 变形 1 3. what type of magnetization uses the formula: ampere - turns = l / d 1 那种类型的磁化使用公式: 安匝数 = l / d? a circular 周向磁化 longitudinal. 纵向磁化 c. parallel 平行磁化 d. vectored 矢量磁化 4. why are large soft contact areas such as lead or copper braid used for surfaces or headstocks? 零件表面通电或用夹头通电时, 为什么要使用大的软接触面如铅或网垫? a. to increass the contact area and reduce the possibility of burning the hand. 为增大接触面积, 减少烧伤零件的可能性 b. bacause of their low melting points. 因为它们的熔点低 c. bacause they help heat metal, thus facilitating magnetic induction. 因为它们有助于加热金属, 从而有利于磁感应 d. to increase the contact area and flux density. 为了增大接触面积和磁通密度 5. if an overall pattern (sometimes circular lines) appears on the test surfaces, how would the inspector reprocess the test piece. 如果零件上出现遍及表面的显示 (有时是环形线), 探伤者应如何重新处理试件? a force at a higher amperage. 用较高的安培值重新磁化 demagnetize. 退磁 retest at lower amperage. 用较低的安培值重新磁化 d. both a and b a和b 6. when testing for thin shallow surface cracks, the preferred mt method should be 检验表面细微的浅裂纹时, 最佳的磁粉探伤方法是. a.dty. 交流电干法 b.dry dc. 直流电干法 c.wet. 交流电湿法 d.wet dc. 直流电湿法 7. when testing a bar with an l / d ratio of four in a ten turn coil, the repuired current would be: 在10匝线圈中对l / d为4的棒材进行试验时. The required current value is: A.45000 Amperes 45000 amp B.Unknown; more, information, is, needed. I dont know. I need more data to figure it out; C.18000 amperes. 18000 amp D.1125 ampere