NCCCO Exam Test 1 Questions With 100% Correct And Verified Answers

Where is the best location for leveling a crane? - ANS- Upperworks When determining the "gross load" the best method is: - ANS- Get an accurate load weight and add the rigging. By order of hitch strength, which is the correct answer? - ANS- Basket, vertical, choker What is the purpose of using a jib? - ANS- Increase height When taking a side strain on a boom, what concerns the operator most? - ANS- Boom damage You should always have at least how many wraps on a hoist drum? - ANS- 2 On a load chart, values above the bold line mean: - ANS- Capacities based on structural competence. The primary purpose for a rooster sheave or Auxiliary boom point is to: - ANS- Separate the hoist lines. What is the proper procedure when using an insulating link or a boot near power lines? - ANS- Be sure to maintain the correct allowable distance from the lines. When the number of layers of rope on a drum increases, the: - ANS- Allowable line pull decreases. What is the minimum allowable distance from the crane and power lines under 50kV? - ANS- 10 ft. The term "Upperworks or Superstructure" refer to the area of the crane: - ANS- Above the turntable Side loading may be caused by: - ANS- Starting or stopping the swing too rapidly. What is the best procedure to follow when underground utilities may be present? - ANS- Contact local utility company Eccentric main boom tip reeving causes: - ANS- Twisting of the boom How many randomly broken wires must there be to remove a running wire rope from service? - ANS- 6 When lifting personnel in a man-basket using 6x19 wire rope, the minimum safety factor is? - ANS- 7 What is the safety factor required when using non rotating wire rope and lifting personnel in a man-basket? - ANS- 10 Who has the responsibility for determining the correct weight of a load? - ANS- Supervisor When working near power lines, when is a signal person required? - ANS- When crane moves within a boom's length of power lines. When an operator leaves the crane, he must first: - ANS- Put the load on the ground and put all dogs or pawls in. If replacing the hoist line wire rope on a crane, how do you determine the size of type of wire rope to use? - ANS- Use Manufacturer's operators manual or load chart. After the crane has been checked out and before crane lift operations begin, the crew should: - ANS- Have a pre-lift meeting According to ANSI B30.5 personnel platform lifts should not be made with wind in excess of: - ANS- 20 mph When is it safe to work closer than the allowable distance from power lines? - ANS- When utility company say the lines are de-energized During setup, how do you determine machine clearances (counterweight, boom, outrigger)? - ANS- Measure for correct distances When operating a crawler crane what is the most unstable allowable quadrant of operation? - ANS- Side When operating a truck crane what is the most unstable allowable quadrant of operations? - ANS- Front What is not a good location for crane setup? - ANS- Above utilities When should a tagline be used? - ANS- When rotation of load would be dangerous When an operator arrives at a jobsite and the crane is already erected, how would the operator check the main and auxiliary hoist brakes? - ANS- Lift the load off the ground and apply the brake What is the distance between an Anti-two-block warning device and an Anti-two block prevention system? - ANS- Warning device only warns, but prevention system will stop the operation Who gives the operator hand signals? - ANS- The person assigned prior to the lift Why use mats or cribbing? - ANS- To reduce ground pressure Tipping capacities of crawler cranes are based on what percentage of tipping? - ANS- 75% Should the load be applied when determining the proper boom angle? - ANS- Yes When should the operator use the "run by the seat of the pants" technique? - ANS- Never Load radius is the distance from the center of gravity of the suspended load to the: - ANS- Center of rotation Why is the primary reason fro using a boom extension? - ANS- Increase height What is the minimum design factor required for a right regular lay main, boom, or auxiliary hoist? - ANS- 3.5 When telescoping the boom section of an R/T, which section should be telescoped first? - ANS- All sections should be telescoped equally How does the operator determine if correct load chart is being used? - ANS- Matching serial number Net capacity is equal to: - ANS- Gross capacity minus capacity deductions If the SWL of a crane's wire rope is 10,000 lbs. using one part, what is the SWL when using 4 parts? - ANS- 40,000 lbs When first arriving on the job site, the operator should first determine the condition of the: - ANS- Access roads How does the operator verify the LMI's boom length or load radius reading? - ANS- Actual measurements If the rated capacity of the crane is above the solid line or within the shaded areas or has an asterisk next to it, this means the capacity is based on: - ANS- Structural competence All hazards and potential problems should be discovered during the: - ANS- Pre-lift site inspection How many broken wires must be present in one strand of one lay for running wire rope to be removed from service? - ANS- 3 In a range diagram, boom length and angle can be used to determine: - ANS- Load radius