Mobile Crane Review Questions | Latest Update | 2024/2025 | Already Passed

Mobile Crane Review Questions | Latest Update | 2024/2025 | Already Passed A crane is at the point of instability when the crane's leverage on the load equals: a. 100% of the load's leverage on crane b. 90% of the load's leverage on crane c. 85% of the load's leverage on crane d. 75% of the load's leverage on crane 100% of the load's leverage on crane (when you max. the crane's capacity is most dangerous) A mobile cranes jib is offset 15 degrees versus its original 0 degrees offset, but the boom angle remains unchanged. In this situation, the load radius: a. increases b. remains the same c. decreases d. cannot be determined increases a sudden start or stop of the hoisting function while operating a mobile crane can produce a: a. static load b. dynamic load c. eccentric load d. symmetrical load dynamic load Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? a. overheating the swing brake b. collapsing the boom c. increasing ground pressure d. overheating the race and bearings collapsing the boom According to ASME, which of the following listed below shall NOT be used for the suspension system on suspended personnel platforms? a. wire rope bridle b. alloy steel chain bridle c. synthetic web bridle d. wire rope slings synthetic web bridle According to OSHA 1926. 1431, while hoisting a personnel platform, what weather condition listed below will promptly discontinue the operation? a. dark b. light c. dangerous d. normal dangerous According to OSHA 1926.1408, for power lines rated 100kV, the minimum clearance between the crane and any lines shall be? a. 5 feet w/ encroachment precautions b. 10 feet w/ encroachment precautions c. 15 feet w/ encroachment precautions d. 20 feet w/ encroachment precautions 15 feet w/ encroachment precautions According to OSHA 1926.1408, the min. clearance between any part of the crane and power lines rated 50 kV or below shall be: a. 5 feet w/ encroachment precautions b. 10 feet w/ encroachment precautions c. 15 feet w/ encroachment precautions d. 20 feet w/ encroachment precautions 10 feet with encroachment precautions According to OSHA 1926.1408, when operating near high voltage power lines, what clearance shall be required when the rating of the lines is 275kV? a. 5 feet w/ encroachment precautions b. 10 feet w/ encroachment precautions c. 15 feet w/ encroachment precautions d. 20 feet w/ encroachment precautions 20 feet w/ encroachment precautions According to OSHA 1926.1411, when you encounter power lines with a voltage of 44kV and the crane is TRAVELING, according to Table T, what is the minimum required clearance? a. 4 b. 6