2026 NCCCO telescopic boom crane -
fixed cab (TSS) 2026 Update
|Complete Exam Set Questions and
Verified Answers (solutions) Plus
Rationales | Get It 100% Accurate!!|
Already Passed A+
1. When hook-suspended personnel platforms are lifted with a telescopic boom crane,
what must be provided?
A. Backup camera
B. Anti two-block device
C. Longer boom
D. Jib extension
Answer: B
Rationale: An anti two-block device prevents the hook block from contacting the boom
tip sheave and damaging the rope or equipment.
2. According to OSHA 1926 Subpart CC, all telescopic boom cranes must be equipped
with:
A. Load moment indicator
B. Boom angle indicator
C. Proximity alarm
D. Rear-view mirror
Answer: B
Rationale: OSHA requires a boom angle indicator to help the operator determine boom
angle and load chart application.
3. When using a telescopic boom crane equipped with an anti two-block device, which
hydraulic functions are disabled when the device is activated?
A. Swing and travel
B. Hoist, boom extend, boom down
C. Cab rotation
D. Outrigger extension
Answer: B
Rationale: Activation prevents further hoist, extension, or lowering of the boom to avoid
damage.
4. What is the safest maximum speed for a telescopic boom crane performing
pick-and-carry operations?
, A. Twice normal speed
B. Manufacturer’s recommended speed limit
C. As fast as possible
D. There is no limit
Answer: B
Rationale: Operators must follow the manufacturer’s recommended limit for safe
pick-and-carry operation.
5. When are outrigger floats/pads required to be fastened to the outrigger?
A. Only in soft soil
B. Only in winter
C. When the crane is set up for a lift
D. Never
Answer: C
Rationale: Outrigger floats/pads must be attached to distribute load and support the crane
properly.
SECTION B — STABILITY & RATED CAPACITY
6. When a telescopic boom crane is engaged in pick-and-carry operation, the rated
tipping capacity is usually based on what percentage of total tipping capacity?
A. 50%
B. 75%
C. 90%
D. 100%
Answer: B
Rationale: Pick-and-carry stability is typically limited to 75% of tipping capacity per
manufacturer charts.
7. When lifting over a corner, ground pressure generated by the crane can approach a
weight that is:
A. Half the total weight
B. Equal to the weight of the crane and suspended load
C. Negligible
D. Double the load weight
Answer: B
Rationale: Corner pressures can be extreme due to leverage and load distribution.
8. When making lifts on outriggers, maximum ground-bearing pressure occurs when
the load is over:
A. Center
B. Corner
C. Rear only
D. Front only
Answer: B
Rationale: Pressure increases at corners because of distribution and leverage effects.
, 9. During pick-and-carry, which precaution should be taken with the boom?
A. Fully lower at all times
B. Boom in line with the direction of travel
C. Maximize boom extension
D. Keep outriggers raised
Answer: B
Rationale: Boom aligned with direction of travel improves stability.
10. When a boom extension is in the stowed position, it is:
A. Removed
B. Secured by manufacturer pin
C. Locked forward
D. Hanging
Answer: B
Rationale: Stowed extensions must be pinned or locked per manufacturer instructions.
SECTION C — LOAD CHART & RADIUS KNOWLEDGE
11. The purpose of a boom length indicator is to:
A. Show the maximum load capacity
B. Indicate extended length of boom
C. Replace the load chart
D. Warn when powerlines are near
Answer: B
Rationale: Boom length indicators show extension length for load chart selection.
12. Load radius is defined as:
A. Distance from boom tip to load
B. Horizontal distance from centerline of rotation to centerline of vertical hoist line with
rated load suspended
C. Distance of outriggers from ground
D. Length of the load
Answer: B
Rationale: Radius is measured horizontally from center of rotation with load suspended.
13. When load radius falls between values on a load chart, which value must be used?
A. Shorter radius
B. Longer radius
C. Average radius
D. Any value
Answer: B
Rationale: Selecting the longer radius is more conservative and safer.
14. Boom angle indicators measure the boom’s angle relative to:
A. Vertical
B. Horizontal
C. Diagonal
D. Ground only
fixed cab (TSS) 2026 Update
|Complete Exam Set Questions and
Verified Answers (solutions) Plus
Rationales | Get It 100% Accurate!!|
Already Passed A+
1. When hook-suspended personnel platforms are lifted with a telescopic boom crane,
what must be provided?
A. Backup camera
B. Anti two-block device
C. Longer boom
D. Jib extension
Answer: B
Rationale: An anti two-block device prevents the hook block from contacting the boom
tip sheave and damaging the rope or equipment.
2. According to OSHA 1926 Subpart CC, all telescopic boom cranes must be equipped
with:
A. Load moment indicator
B. Boom angle indicator
C. Proximity alarm
D. Rear-view mirror
Answer: B
Rationale: OSHA requires a boom angle indicator to help the operator determine boom
angle and load chart application.
3. When using a telescopic boom crane equipped with an anti two-block device, which
hydraulic functions are disabled when the device is activated?
A. Swing and travel
B. Hoist, boom extend, boom down
C. Cab rotation
D. Outrigger extension
Answer: B
Rationale: Activation prevents further hoist, extension, or lowering of the boom to avoid
damage.
4. What is the safest maximum speed for a telescopic boom crane performing
pick-and-carry operations?
, A. Twice normal speed
B. Manufacturer’s recommended speed limit
C. As fast as possible
D. There is no limit
Answer: B
Rationale: Operators must follow the manufacturer’s recommended limit for safe
pick-and-carry operation.
5. When are outrigger floats/pads required to be fastened to the outrigger?
A. Only in soft soil
B. Only in winter
C. When the crane is set up for a lift
D. Never
Answer: C
Rationale: Outrigger floats/pads must be attached to distribute load and support the crane
properly.
SECTION B — STABILITY & RATED CAPACITY
6. When a telescopic boom crane is engaged in pick-and-carry operation, the rated
tipping capacity is usually based on what percentage of total tipping capacity?
A. 50%
B. 75%
C. 90%
D. 100%
Answer: B
Rationale: Pick-and-carry stability is typically limited to 75% of tipping capacity per
manufacturer charts.
7. When lifting over a corner, ground pressure generated by the crane can approach a
weight that is:
A. Half the total weight
B. Equal to the weight of the crane and suspended load
C. Negligible
D. Double the load weight
Answer: B
Rationale: Corner pressures can be extreme due to leverage and load distribution.
8. When making lifts on outriggers, maximum ground-bearing pressure occurs when
the load is over:
A. Center
B. Corner
C. Rear only
D. Front only
Answer: B
Rationale: Pressure increases at corners because of distribution and leverage effects.
, 9. During pick-and-carry, which precaution should be taken with the boom?
A. Fully lower at all times
B. Boom in line with the direction of travel
C. Maximize boom extension
D. Keep outriggers raised
Answer: B
Rationale: Boom aligned with direction of travel improves stability.
10. When a boom extension is in the stowed position, it is:
A. Removed
B. Secured by manufacturer pin
C. Locked forward
D. Hanging
Answer: B
Rationale: Stowed extensions must be pinned or locked per manufacturer instructions.
SECTION C — LOAD CHART & RADIUS KNOWLEDGE
11. The purpose of a boom length indicator is to:
A. Show the maximum load capacity
B. Indicate extended length of boom
C. Replace the load chart
D. Warn when powerlines are near
Answer: B
Rationale: Boom length indicators show extension length for load chart selection.
12. Load radius is defined as:
A. Distance from boom tip to load
B. Horizontal distance from centerline of rotation to centerline of vertical hoist line with
rated load suspended
C. Distance of outriggers from ground
D. Length of the load
Answer: B
Rationale: Radius is measured horizontally from center of rotation with load suspended.
13. When load radius falls between values on a load chart, which value must be used?
A. Shorter radius
B. Longer radius
C. Average radius
D. Any value
Answer: B
Rationale: Selecting the longer radius is more conservative and safer.
14. Boom angle indicators measure the boom’s angle relative to:
A. Vertical
B. Horizontal
C. Diagonal
D. Ground only
