t_cert

Subscribe

Subscribe to our news mailing list to keep up with NCCCO News and Industry Headline.

CERTIFICATION PROGRAMS

Mobile Crane Operator

Written Exam - Telescopic Boom Crane-Swing Cab (TLL) 

Link-Belt

These sample questions are intended to convey something of the style and content of the National Operator Certification Program examination developed and administered by the National Commission for the Certification of Crane Operators (NCCCO). They are not actual test questions, nor do they attempt to address all of the areas of knowledge tested on the CCO certification examination. Response to these questions is not necessarily an indication of performance on the CCO examinations.

(Note: N/A means Not Applicable)

Sample Item #1

Configuration On Fully Extended Outriggers Extension 34-ft. Offset Fly Stowed
Counterweight Standard Ext. Off-set / Angle N/A
Main Boom Mode B, 95-ft. Block 40 Ton, 2-parts of line, 30-ft. below tip
Main Boom Angle N/A Ball N/A
Radius 83-ft. Rigging 75-lb.
Other N/A Main Rope 1-lb./ft.
Other N/A Aux. Rope N/A

Note: For line in use, when wire rope deductions are required, the wire rope length will be measured from the boom tip to the ground.

What is the net capacity when lifting off the main boom over the side?  

A.   3,775 lbs.

Incorrect, Wrong capacity at 105 ft. boom

B.   3,705 lbs.

Incorrect, No deduct for 1 part of excess main rope

C.   3,295 lbs.

Incorrect, Wrong block weight

D.   3,675 lbs.

Correct,
Gross Capacity
5,400
Jib
900
Block
720
Rigging
75
Main Rope
30
Total Deducts
1,725
Net Capacity
3,675

Sample Item #2

Configuration On Fully Extended Outriggers Extension 34-ft. Offset Fly Erected
Counterweight Standard Ext. Off-set / Angle 1-degree
Main Boom Mode B, 85-ft. Block N/A
Main Boom Angle N/A Ball 8.5 Ton
Radius 40-ft. Rigging 50-lb.
Other N/A Main Rope N/A
Other N/A Aux. Rope 1-lb./ft.

Note: For line in use, when wire rope deductions are required, the wire rope length will be measured from the boom tip to the ground.

What is the net capacity when lifting off the fly?

A.   10,090 lbs.

Incorrect, Wrong boom length chart = 110 ft Main + 34 Fly

B.   12,510 lbs.

Correct,
Gross Capacity
12,920
Ball
360
Rigging
50
Total Deducts
410
Net Capacity
12,510

C.   12,560 lbs.

Incorrect, No rigging deduct

D.   14,090 lbs.

Incorrect, Chart capacity in lieu of line pull

Sample Item #3

Configuration On Fully Extended Outriggers Extension 34-ft. Offset Fly Stowed
Counterweight Standard Ext. Off-set / Angle N/A
Main Boom Mode B, 110-ft. Block 40 Ton, 4-parts of line
Main Boom Angle N/A Ball 8.5 Ton, 5-ft. below tip
Radius 60-ft. Rigging 150-lb.
Other Auxiliary Boom Head Main Rope 1-lb./ft.
Other N/A Aux. Rope 1-lb./ft.

Note: For line in use, when wire rope deductions are required, the wire rope length will be measured from the boom tip to the ground.

What is the net capacity when lifting off the main boom over the front?

A.   12,500 lbs.

Incorrect, Gross capacity

B.   9,915 lbs.

Correct,
Gross Capacity
12,500
Jib
900
Block
720
Ball
360
Rigging
150
Main Rope
300
Aux Rope
5
Aux Boom Head
150
Total Deducts
2,585
Net Capacity
9,915

C.   9,315 lbs.

Incorrect, Use 360 degree chart

D.   9,815 lbs.

Incorrect, Deducted all rope weight