NCCCO Questions with 100% Verified Correct Answers What action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up? - Correct Answer Boom up When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? - Correct Answer 1% The load line of the crane you're operating contacts an energized power line. There's no sign of any other danger, such as fire. What should you do? - Correct Answer Stay in the cab until the lines are de- energized According to OSHA 1926.1413, how many randomly distributed broken wires in rotation-resistant rope are cause for replacement of the rope? - Correct Answer 2 broken wires in 6 rope diameters What is the net capacity of a crane on main boom unless the manufacturer states otherwise? - Correct Answer The capacity listed in the load chart minus the weight of the rigging and all attachments What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection? - Correct Answer It could swing out away from the crane What Standard Method hand signal is being illustrated? - Correct Answer Swing Who should an operator respond to a "stop" signal from? - Correct Answer Anyone Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? - Correct Answer The fron What is the definition of "operating radius?" - Correct Answer The distance from the center of rotation of the crane to the center of gravity of the load What applies to the capacities below the bold line shown on a load chart? - Correct Answer They are based on the stability of the crane 1 / 2
In which quadrant are rough terrain crane capacities generally greater? - Correct Answer Over the front According to federal requirements, under what conditions is it okay for a person to ride the headache ball? - Correct Answer It is never okay By what percentage do most manufacturers require a crane's load chart capacity to be reduced by for duty cycle operations such as high-volume concrete placement? - Correct Answer 20%.From which two points should the boom be measured? - Correct Answer From the boom hinge pins to the center of the boom tip sheave What is the preferred method of installing wire rope from a reel onto a hoist drum? - Correct Answer the rope runs from the top of the reel to the top of the drum Over which quadrant are truck crane capacities usually greater? - Correct Answer Over the rear.According to OSHA, which accessible area of an operating crane must always be barricaded? - Correct Answer The swing radius of the rear of the rotating superstructure What is the OSHA regulation governing cranes in construction - Correct Answer 1926.1400 Under which circumstance is a crack in the windshield of a crane cab okay? - Correct Answer As long as it causes no visible distortion that would interfere with safe operations Under which circumstance does OSHA permits hoisting of personnel by crane? - Correct Answer As long as there is no less hazardous or practicable way Unless the manufacturer states otherwise, what crane capacity chart is appropriate when a crane is set up with 3 of its 4 outriggers extended and the fourth is retracted? - Correct Answer On-rubber chart
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