Question 409Electricity/Electronics - Assistant Engineer70% to pass
The winch shown in the illustration operates in any of the positions with the master switch in the 'lower' direction, but will not 'hoist' in any of the master switch hoist speed positions. Which of the listed faults could be the cause? Illustration EL-0102
AI Explanation
The correct answer is C) Master switch contact 'MS 4' may have defective springs.
The explanation is as follows:
1. The winch operates in any of the positions with the master switch in the 'lower' direction, but will not 'hoist' in any of the master switch hoist speed positions. This indicates an issue with the 'hoist' function, which is controlled by the 'MS 4' contact in the master switch.
2. If the 'MS 4' contact has defective springs, it would prevent the winch from engaging the 'hoist' function, while the 'lower' function would still operate correctly, as it is controlled by a different contact.
3. The other options (A, B, and D) are incorrect because they refer to different contacts in the master switch that are not responsible for the specific issue described in the question.
Related Questions
#407 Which of the following conditions will occur if the brake solenoid coil burns out on a cargo winch with an electrical brake? #408 Refer to figure "A" representing an electric oven as shown in the illustration. With the oven turned on, the power available indicator light is off, the oven on indicator light is off, and only elements "6" and "7" appear to be producing heat. Which fuse is blown? Illustration EL-0041 #410 Refer to figures "1" and "2" of the basic synchronous transmission system shown in the illustration. Figure "1" shows a properly connected system where the receiver TR remains in correspondence with the transmitter TX. In figure "2", although properly zeroed, the receiver goes out of correspondence with the transmitter due to improper connections resulting in reverse torque direction. Which connection error results in this behavior? Illustration EL-0149 #411 As shown in the illustration, which brush holder is of the reaction type? Illustration EL-0029 #412 If a DC motor has its armature and field connected across a resistor when the motor is disconnected from its power supply, what statement is true?