Question 517General Subjects - Assistant Engineer70% to pass
Which figure shown in the illustration, is the nut lock improperly used? Illustration GS-0156
AI Explanation
The correct answer is D) "C" and "E".
The nut lock is being improperly used in figures "C" and "E" of the illustration GS-0156. The nut lock is designed to prevent the nut from loosening, but it must be properly installed with the split end of the lock oriented in the direction of the nut's tightening rotation. In figures "C" and "E", the nut lock is installed incorrectly, with the split end oriented in the opposite direction, which would not effectively prevent the nut from loosening.
The other answer choices are incorrect because "A" shows the nut lock properly installed, and "B" does not depict a nut lock at all.
Related Questions
#515 What class of screw thread is indicated with a machine screw described as 1/2-13 NC-2? #516 Which of the following types of nuts would be best suited to use when it is important that a nut not work itself loose due to vibration? #518 The locking plates shown in the illustration are used in many marine applications. Which figure indicates the improper method for using these devices? Illustration GS-0156 #519 Which of the figures illustrated would be LEAST desirable for use as a set screw? Illustration GS-0080 #520 Which of the following is true when comparing the different "class of fit" for machine threads on bolts and nuts?