Self-Test B-4.2: Describe Hoisting, Lifting and Rigging Equipment

Complete Self-Test B-4.2 and check your answers.

1. Turnbuckles are used to adjust the length of slings so that loads can be lifted in what way?
   1. In a level position
   2. Higher
   3. Vertically
   4. From below
2. The screw threads at each end of a turnbuckle’s sleeve must be designed in what fashion?
   1. Locking at one end and non-locking at the other
   2. Identical
   3. A larger diameter at one end than at the other
   4. Left-handed at one end and right-handed at the other
3. When several ropes are to be attached to a single hook, the connection to the hook must be made with a _____.
   1. Turnbuckle
   2. U-bolt
   3. Shackle
   4. Series of cable clips
4. The U-bolt part of a cable clip must be installed so it bears on which of the following?
   1. Thimble
   2. Live end of the rope
   3. Dead end of the rope
   4. Whipping
5. What does the number of cable clips required for a connection depend upon?
   1. Diameter of the rope
   2. Type of clip used
   3. Mass of the load
   4. Strength of the rope
6. Correctly installed cable clips will reduce the breaking strength of wire rope by what factor?
   1. 10%
   2. 20%
   3. 30%
   4. 40%
7. What is the safe working capacity of a jib or overhead travelling crane?
   1. Equal to that of the hoist assembly
   2. Not more than 10 Mpa (1450 psi) less than the hoist assembly
   3. Greater than that of the hoist assembly
   4. Displayed visibly on the device
8. The load-lifting capacity of motorized forklifts depends on the spacing of the forks, the floor or ground surface and _____.
   1. Height and tilt of the mast
   2. Whether it is equipped with a torque converter
   3. Size of the rear wheels
   4. Steering capacity of the front wheels
9. How is the mechanical advantage of a hydraulic jack determined?
   1. Length of the pump piston
   2. Length of the lifting piston
   3. Ratio of the pump piston’s force to the lifting piston’s force
   4. Ratio of the pump piston’s diameter to the lifting piston’s diameter
10. To lower a load supported by a hydraulic jack, you must do which of the following?
    1. Flip the lever downward
    2. Set the pump to reverse
    3. Lift the handle as high as possible
    4. Open the valve
11. Which pulling device can use either chain or cable?
    1. Chain fall
    2. Block and tackle
    3. Come-along
    4. Gin pole
12. A Tirfor jack is a hoisting device that uses a ____
    1. Nylon rope
    2. Metal chain
    3. Wire rope
    4. Fibre rope
13. How are Tirfor jacks made to travel in the opposite direction?
    1. Flipping the gear lever
    2. Turning the handle in the opposite direction
    3. Releasing the ratchet
    4. Re-locating the pipe handle

Answer Key: Self-Test B-4.2 is on the next page.