Welcome to your CCO MOBILE CRANE PRACTICE TEST
1.
A crane is set up with 3 of its 4 outriggers fully extended and the fourth retracted. The capacity of the crane in this configuration will be found in the:
2.
When working around power lines of more than 750kV, how much clearance is generally required from any part of the crane and its load?
3.
When a crane is used to lift personnel, the rope design factor is ______.
4.
What is the tipping axis of a crawler crane?
5.
During disassembly of a long boom, the hog lines are connected at the maximum cantilever point and the boom is slightly lifted off the ground. Which pins are to be removed next?
6.
When loads are limited by structural competence rather than stability are to be handled, it shall be ascertained that the weight of the load has been determined within:
7.
Barricading is required when there is _____ (feet) or less between any moving part of a crane and an obstruction.
8.
What do pressure transducers used in a load movement indicator system measure?
9.
What is required of the operator if the load weight is not accurately known?
10.
In order for a crane to be properly set up on outriggers, what is the correct position of the tires?
11.
You’re setting your crane up in a confined area and you cannot fully extend your fourth outrigger. Your crane does not have a load chart for intermediate extension working. In such a situation you should use the capacities in the:
12.
What is the weight of a load of fir lumber? The dimensions are 3 feet x 4.5 feet x 12 feet.
The weight of fir lumber is 40 pounds per cubic foot (40 lbs/ cu ft).
13.
When a crane is properly barricaded, how much clearance is required between the outermost swing point of the rear of the rotating superstructure and the barricade?
14.
When working at ground floor level near a cellar wall, the crane’s outrigger pads or tracks should be placed:
15.
What is the maximum percentage of the rated capacity a crane can hoist when a work platform is suspended from the crane?
16.
You plan to pick a load you are told weighs 36,500 lbs. Line pull on the crane you are operating is 9,000 lbs. How many parts of the line will you need?
17.
A truck crane is set up on outriggers. The part of the load chart governed by stability is based on what percentage of the crane’s capacity?
18.
If a crane comes in contact with power lines, it is critical that everyone is kept from the crane, the load line, and the load because:
19.
The purpose for a rooster sheave or auxiliary boom point sheave is to:
20.
What is the proper procedure when using an insulating link or a boot near power lines?
21.
When lifting personnel, the total weight loaded personnel platform must not exceed what percentage of the rated capacity of the crane?
22.
According to OSHA 1926.1400 for power lines rated over 50kV, minimum clearances between the lines and any part of the crane or load shall be 10 feet:
