单选题 An energized coil around the part produces: 零件缠绕激励线圈会产生：

A、 a circular field 周向磁场

B、 a longitudinal field 纵向磁场

C、 an intermittent field 间歇磁场

D、 a field dependent on the type of current applied 磁场是基于施加电流的类型

查看答案

由4m***o5提供分享举报纠错

相关试题

单选题 The magnetic field is strongest when the: 磁场最强时是：

A、magnetizing voltage is flowing 通磁化电压时

B、magnetizing current is flowing 通磁化电流时

C、material exhibits high coercive forces 材料具有很高的矫顽力

D、magnetizing current is not flowing 不通磁化电流时

查看答案

单选题 Magnetic particle is a nondestructive testing method used for: 磁粉是一种无损检测方法应用于：

A、locating surface and near-surface discontinuities in aluminum 定位铝表面和近表面不连续性

B、locating surface and near-surface discontinuities in steel 定位钢表面和近表面不连续性

C、finding and measuring material separation 查找并测量材料偏析

D、measuring flux density 测量磁通密度

查看答案

单选题 Magnetic particles are available in different colors: 磁粉可以是不同的颜色：

A、for color contrast with the part surface there by enhancing detection of indications 通过与零件表面形成颜色对比度增强显示的检测

B、to enhance the detection of indications by allowing background color matching 通过背景匹配从而增强显示的检测

C、to determine if an indication is surface or subsurface 从而确定显示是在零件表面或近表面

D、to indicate different magnetic flux values 指示不同的磁通密度值

查看答案

单选题 If a crack exists in a circular magnet, the attraction of magnetic particles to the crack is caused by a: 处于周向磁场中的裂纹，磁粉被吸引到裂纹是通过：

A、coercive force 矫顽力

B、leakage field 漏磁场

C、Doppler effect 多普勒效应

D、high reluctance at the crack 裂纹上的高磁阻

查看答案

单选题 Ferromagnetic material is: 铁磁性材料：

A、strongly attracted by a magnetic field 被磁场强烈吸引

B、not highly saturated by magnetic fields 磁场作用下饱和度不高

C、a material with a 0 permeability measurement 磁导率测量为0的材料

D、not capable of being magnetized 不被磁化

查看答案

单选题 The retentivity of a material describes the: 材料剩磁的描述：

A、ease with which it can be magnetized 被磁化的难易程度

B、depth of the magnetic field in the part 零件中磁场的深度

C、length of time required to demagnetize it 退磁所需时间

D、ability to retain the magnetic field 保留磁场的能力

查看答案

单选题 Which of the following can be magnetized? 以下哪个可以被磁化？

A、Iron 铁

B、Copper 铜

C、Aluminum 铝

D、Magnesium 镁

查看答案

单选题 The permeability of a material describes the: 材料磁导率描述为：

A、ease with which it can be magnetized 被磁化的难易程度

B、depth of the magnetic field in the part 零件中磁场的深度

C、length of time required to demagnetize it 退磁所需时间

D、ability to retain the magnetic field 保留磁场的能力

查看答案