CCO PRACTICE Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

When working on rubber, cranes are rated at what percentage of tipping: a) 70% b) 75% c) 80% d) 85% Correct Answer: 75% When a crane is working "on outriggers" the only time they should be less than fully extended is when: a) working alongside the highway and cannot block a lane b) you are handling light loads c) the main boom is being lifted d) there is a load chart for this operation Correct Answer: there is a load chart for this operation A truck crane set up with the outriggers extended and set, and tires touching the ground, the operator should refer to what load chart: 2 a) intermediate chart b) over the front chart c) on rubber chart d) 85% of the main chart Correct Answer: on rubber chart Blocking paced under the ends of crawler tracks will: a) increase the crane's stability when operating over front or back b) increase the crane's stability when operating over side c) stop crane from traveling unexpectedly d)stop crane from sliding unexpectedly Correct Answer: increase the crane's stability when operating over front or back What quadrant produces the least amount of ground pressure on a lattice crawler: a) corner b) side c) front d) rear Correct Answer: sid