Massachusetts 1B Hoisting License Exam Quiz and Answers 100% Solved 2025

Massachusetts 1B Hoisting License Exam Quiz and Answers 100% Solved 2025 When can you use a chain sling? - Answer- When you use a chain sling according to 29CFR 1926 What does a chain sling according to 29CFR 1926 let you do? - Answer- Use a chain sling Why do most mobile crane accidents happen? - Answer- Poor Operation What does poor operation cause the most of? - Answer- Mobile Crane Accidents What happens to the loads center of gravity when its lifted? - Answer- The center of gravity moves directly under the boom point sheave What has to happen to the center of gravity for it to move directly under the boom point sheave? - Answer- The loads center of gravity was lifted How much is the percentage of tipping, per the crawler crane's stability rating? - Answer- 75% 75% is there percentage of tipping for? - Answer- Per the crawler cranes stability rating According to MA regulations on hoisting equipment operation, what is the required source of information regarding the operation of equipment? - Answer- The operators manual The operators manual is the required source for what - Answer- The operation of equipment; according to MA regulations on hoisting equipment operation True or False: If an operator is operating hoisting equipment without a problem, but an inspector from OPSI demands that operation stop, the operators judgment can override the inspector. Operation does not need to stop in that case. - Answer- False Does operation need to stop If an operator is operating hoisting equipment without a problem, but an inspector from OPSI demands that operation stop, the operators judgment can override the inspector. - Answer- yes What two main factors determine the capacity of a mobile crane? - Answer- Structural Strength & Stability Structural Strength & Stability are the two main factors that determine what? - Answer- The capacity of a mobile crane Why should an operator put blocking or mats under the outrigger rams? - Answer- 1. To make the Crane Level 2. To Keep the outriggers from sinking 3. To provide better weight distribution of the whole crane 1. To make the Crane Level 2. To Keep the outriggers from sinking 3. To provide better weight distribution of the whole crane are the three reasons an operator should what? - Answer- Put blocking or mats under the outrigger rams If driving is interrupted while an operator is operating a pile driver, what should the operator do before leaving his or her post? - Answer- Drop or lower the hammer until it is resting on the ground If you are operating a pile driver & you have to drop or lower the hammer until it is resting on the ground before leaving the post, what has happened? - Answer- Driving was interrupted while the operator was operating a pile driver What device shall be provided for telescoping booms (except if the load rating is independent of the boom length?) - Answer- Boom Length Indicator Why is a Boom Length Indicator provided? - Answer- Telescoping Booms What is the exception of needing the boom length indicator? - Answer- if the load rating is independent of the boom length What is the radius of the crane? - Answer- The horizontal distance from the center of rotation of the crane with a freely suspended hoist line The horizontal distance from the center of rotation of the crane with a freely suspended hoist line is what? - Answer- The radius of the crane What shall be attached to the crane and easily accessible to the operator while at the controls? - Answer- The operators manual The operators manual should be where when the operator is at the controls? - Answer- Attached to the crane & easily accessible to the operator The BLANK is the ultimate strength of an object is divided by the safe working load of that object - Answer- The safety factor The Safety Factor is - Answer- the ultimate strength of an object is divided by the safe working load of that object