Mobile Crane Questions Test 4 | 100% Correct Answers | Verified | Latest 2024 Version, Exams of Engineering

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Mobile Crane Questions Test 4 | 100% Correct

Answers | Verified | Latest 2024 Version

Jib offset is the jib angle to the: - ✔✔Boom. All hazards and problems that are found on the worksite should be identified: - ✔✔At the preoperational worksite inspection. Which of the following OSHA regulations govern suspended personnel platforms - ✔✔OSHA 1926.1400(e). According to OSHA the prohibited zone without a spotter for powerlines that are 60 kV, is: - ✔✔15 ft. What percentage of gross capacity is used when lifting with more than one crane? - ✔✔75%. You are required to pass a physical exam every _______ years. According to ASME B30.5? - ✔✔3 years. How many broken wires at an end socket of a standing wire rope are allowed before the wire rope must be replaced? - ✔✔1. When operating a mobile crane, you inspect your running wire rope at least: - ✔✔Every shift. When lifting a load with more than one crane, it is important to: - ✔✔Keep the hoist lines of both cranes vertical. Rotation resistant wire rope has a design factor of: - ✔✔5 to 1. Line pull is: - ✔✔The amount of weight a drum will hoist for a given layer. Boom length is: - ✔✔Center of the foot pins to the center of the head sheave pins.

The weight of the stowed jib used in the load calculation: - ✔✔Effective weight. A crane's rated capacity is based upon: - ✔✔Structural and stability. When lifting a suspended personnel platform with two or more legs the safety factor for the rigging hardware is: - ✔✔5 times the intended load. If using cranes of different rated capacities, the crane with the larger rated capacity: - ✔✔Should be hooked a distance closer to the loads center of gravity. Hoist ropes that are not rotation resistant must have a design factor of: - ✔✔3.5 to 1. Backward stability on a R/T crane could be a problem when the crane is working: - ✔✔Over the side at a minimum radius. It is important to inspect rotation resistant wire rope more frequently because: - ✔✔Internal damage will occur more frequently. It is important to know when lubricating wire rope that the lubricant must: - ✔✔Not hinder visual inspection. Breaking strength devided by the design factor equals: - ✔✔Safe working load. SWL. If determining boom tip elevation is important the best way to determine this is to: - ✔✔Call manufacturer. When determining what position to dog the machine overnight and high winds are expected: - ✔✔Tie off to the closest solid structure with the wind to your back. When crane is in transit and you are required to pass under 50kV powerlines what is OSHA's minimum required clearance? - ✔✔10 ft.

Timber mats work best when they are: - ✔✔Bolted together. The only time a employer may use a suspended personnel platform is when: - ✔✔Crane is certified by OSHA. What us the greatest cause of ground personnel deaths? - ✔✔Structural failure. When lifting a suspended personnel platform the crane must be de-rated by: - ✔✔50%.

29. Boom deflection will: - ✔✔Increase load radius. Increasing the distance between the crane's center of gravity and the tipping axis will: - ✔✔Decrease stability. The effect of a loads leverage being greater than the cranes leverage is: - ✔✔Instability. Blocking under the outrigger pads/floats shall be: - ✔✔Sufficient to support the crane and the load. With a pick and carry operation, the rated tipping capacity is based on what percentage of the total tipping capacity? - ✔✔65%. All telescopic boom cranes must be equipped with: - ✔✔A load moment indicator. A crane's ground pressure can approach a weight that is: - ✔✔30% of the weight of the crane and the suspended load. Operating a crane with a long boom, on uneven ground, you should: - ✔✔Block under the pads regardless of the angle. On a hydraulic truck crane that has all five outriggers properly positioned on firm supporting surfaces, the working area diagram from the load capacity chart will indicate that the "over the front" area is: - ✔✔Different depending on the crane manufacturer's definitions and determination.

An operator performing a pick and carry operation with a rough terrain crane should keep the load: - ✔✔Positioned over the front of the carrier. When a crane's hydraulic boom sections are required to be extended equally and they are not, the: - ✔✔LMI can give false readings. A telescopic crane is going to lift a personnel platform, what is required? - ✔✔Anti-two-block system. Before making a near capacity lift with a crane, the operator must: - ✔✔Adjust the hydraulic pressure up 5% to prevent slippage. & Test the hoist brakes by lifting the load a few inches and holding it. A stationary load is? - ✔✔Static. When operating an R/T and extending the outriggers from the upper, you should: - ✔✔Make visual contact or post a signal-person. The effective weight of the fly/jib when erected from the stowed position: - ✔✔Never changes. When swinging the load of any crane on crawlers, it will exert the most ground pressure over the: - ✔✔Front. How does the effective weight of a stowed jib/extension relate to the actual weight of the jib/extension?

• ✔✔Same as the actual weight. When testing a manbasket the operator must load the manbasket to 125% of the rated capacity and hold it for: - ✔✔5 minutes. The ASME volume for slings is: - ✔✔B30.9. When operating a crane on a barge the list chart must be provided by: - ✔✔The manufacturer.

What is the maximum allowed list or trim for a 100 ton crane on a barge. - ✔✔5 degrees. What does the term "List" mean? - ✔✔Movement side to side. What standard covers safety glass? - ✔✔ANZI Z 26.1. When arriving in the crane at the jobsite, the operator should first determine the condition of the: - ✔✔Access roads.