NCCCO TELESCOPIC BOOM CRANE - FIXED CAB (TSS) 2025 UPDATE
|COMPLETE EXAM SET QUESTIONS AND VERIFIED ANSWERS (SOLUTIONS) |
GET IT 100% ACCURATE!!| ALREADY PASSED A+
Question 1
According to safety regulations, what must be provided when a telescopic boom crane is used to
lift a hook-suspended personnel platform?
A) A dedicated spotter with a radio
B) An anti-two-block device
C) A second wire rope for backup
D) A load moment indicator (LMI) with bypass capability
E) A high-visibility strobe light
Correct Answer: B) An anti two-block devise must be provided
Rationale: Lifting personnel is a high-risk operation. An anti-two-block device is mandatory
to prevent the load block from coming into contact with the boom tip, which could cause
the wire rope to snap and the platform to fall.
Question 2
When a telescopic boom crane’s anti-two-block device is activated, which of the following
hydraulic functions are automatically disabled?
A) Swing, Hoist, and Boom Up
B) Hoist, Retract the boom, and Boom Up
C) Hoist, Extend the boom, and Boom Down
D) Boom Up, Boom Down, and Swing
E) Travel, Hoist, and Boom Down
Correct Answer: C) Hoist, extend the boom, boom down
Rationale: To prevent damage or rope failure during a two-blocking event, the crane must
disable any function that worsens the condition. These functions include hoisting the line
further, extending the boom sections, or lowering the boom (which increases the distance
between the tip and the winch).
Question 3
What is the primary factor used to determine the maximum safe speed for a telescopic boom
crane performing a pick-and-carry operation?
A) The operator’s level of experience
B) The total weight of the load
C) The manufacturer's recommended speed limit
D) The tire pressure of the crane
E) The maximum speed of the engine
Correct Answer: C) The manufacturer's recommended speed limit
Rationale: Pick-and-carry operations are inherently unstable. To ensure safety and prevent
structural or stability failures, the operator must strictly adhere to the speed limits
established by the manufacturer's engineering specifications.
, 2
Question 4
When placing blocking under outrigger floats or pads, the operator must ensure that the blocking
is:
A) Made of cedar or soft pine
B) At least 12 inches thick
C) Sufficient to support and stabilize the crane
D) Painted a bright color for visibility
E) Stacked in a pyramid shape at least 4 feet high
Correct Answer: C) Sufficient to support/stabilize the crane
Rationale: The blocking (mats or cribbing) is designed to distribute the crane’s weight over
a larger surface area. It must be strong enough to support the total weight of the crane and
the load without failing or sinking into the ground.
Question 5
Where is a telescopic boom extension typically located when it is in the "stowed" position?
A) Attached to the carrier deck
B) Pinned to the boom base section
C) Pinned to the boom tip
D) Stored on a separate trailer
E) Retracted inside the main boom sections
Correct Answer: B) Pinned to the boom base section
Rationale: For transport and operations where the extension is not needed, it is typically
swung to the side and pinned to the base section of the boom to keep it secure and out of the
way of the main load line.
Question 6
When a telescopic boom crane is engaged in a pick-and-carry operation on tires, the rated tipping
capacity is based on what percentage of the total tipping capacity?
A) 50%
B) 66%
C) 75%
D) 85%
E) 100%
Correct Answer: C) 75%
Rationale: Operations "on rubber" (without outriggers) are more dangerous. Safety
standards (ASME/OSHA) mandate that the rated capacity for these lifts does not exceed
75% of the static tipping load to provide a safety margin for movement and ground
variations.
Question 7
According to OSHA 1926 Subpart CC, what specific safety equipment is mandatory for all
, 3
telescopic boom cranes?
A) An anemometer (wind gauge)
B) A boom angle indicator
C) A backup camera
D) A global positioning system (GPS)
E) An automatic fire suppression system
Correct Answer: B) A boom angle indicator
Rationale: Because the capacity of a telescopic crane changes drastically with the angle of
the boom, OSHA requires a functional indicator to be clearly visible to the operator to
ensure they stay within the load chart parameters.
Question 8
When evaluating the load chart for a jib, the capacities listed are primarily based on:
A) The stability of the carrier
B) The weight of the counterweight
C) Structural strength
D) The speed of the wind
E) The diameter of the wire rope
Correct Answer: C) structural strength
Rationale: Unlike the main boom, which is often limited by stability (tipping), jibs are long,
slender attachments that are almost always limited by their own structural integrity or the
structural capacity of the boom tip they are attached to.
Question 9
When lifting a load over a corner, the ground pressure generated by the outrigger can approach a
weight that is:
A) Equal to the load weight only
B) Half the weight of the crane
C) Equal to the weight of the crane and the suspended load
D) 25% of the crane's total mass
E) The weight of the counterweight divided by four
Correct Answer: C) equal to the weight of the crane and suspended load
Rationale: As a crane swings over a corner outrigger, the center of gravity shifts toward that
point. In extreme cases, nearly 100% of the combined weight of the machine and the load is
concentrated on that single outrigger pad.
Question 10
What is the primary purpose of a boom length indicator on a telescopic crane?
A) To tell the operator how high the load is
B) To measure the distance from the crane to the load
C) To indicate the current extended length of the boom
|COMPLETE EXAM SET QUESTIONS AND VERIFIED ANSWERS (SOLUTIONS) |
GET IT 100% ACCURATE!!| ALREADY PASSED A+
Question 1
According to safety regulations, what must be provided when a telescopic boom crane is used to
lift a hook-suspended personnel platform?
A) A dedicated spotter with a radio
B) An anti-two-block device
C) A second wire rope for backup
D) A load moment indicator (LMI) with bypass capability
E) A high-visibility strobe light
Correct Answer: B) An anti two-block devise must be provided
Rationale: Lifting personnel is a high-risk operation. An anti-two-block device is mandatory
to prevent the load block from coming into contact with the boom tip, which could cause
the wire rope to snap and the platform to fall.
Question 2
When a telescopic boom crane’s anti-two-block device is activated, which of the following
hydraulic functions are automatically disabled?
A) Swing, Hoist, and Boom Up
B) Hoist, Retract the boom, and Boom Up
C) Hoist, Extend the boom, and Boom Down
D) Boom Up, Boom Down, and Swing
E) Travel, Hoist, and Boom Down
Correct Answer: C) Hoist, extend the boom, boom down
Rationale: To prevent damage or rope failure during a two-blocking event, the crane must
disable any function that worsens the condition. These functions include hoisting the line
further, extending the boom sections, or lowering the boom (which increases the distance
between the tip and the winch).
Question 3
What is the primary factor used to determine the maximum safe speed for a telescopic boom
crane performing a pick-and-carry operation?
A) The operator’s level of experience
B) The total weight of the load
C) The manufacturer's recommended speed limit
D) The tire pressure of the crane
E) The maximum speed of the engine
Correct Answer: C) The manufacturer's recommended speed limit
Rationale: Pick-and-carry operations are inherently unstable. To ensure safety and prevent
structural or stability failures, the operator must strictly adhere to the speed limits
established by the manufacturer's engineering specifications.
, 2
Question 4
When placing blocking under outrigger floats or pads, the operator must ensure that the blocking
is:
A) Made of cedar or soft pine
B) At least 12 inches thick
C) Sufficient to support and stabilize the crane
D) Painted a bright color for visibility
E) Stacked in a pyramid shape at least 4 feet high
Correct Answer: C) Sufficient to support/stabilize the crane
Rationale: The blocking (mats or cribbing) is designed to distribute the crane’s weight over
a larger surface area. It must be strong enough to support the total weight of the crane and
the load without failing or sinking into the ground.
Question 5
Where is a telescopic boom extension typically located when it is in the "stowed" position?
A) Attached to the carrier deck
B) Pinned to the boom base section
C) Pinned to the boom tip
D) Stored on a separate trailer
E) Retracted inside the main boom sections
Correct Answer: B) Pinned to the boom base section
Rationale: For transport and operations where the extension is not needed, it is typically
swung to the side and pinned to the base section of the boom to keep it secure and out of the
way of the main load line.
Question 6
When a telescopic boom crane is engaged in a pick-and-carry operation on tires, the rated tipping
capacity is based on what percentage of the total tipping capacity?
A) 50%
B) 66%
C) 75%
D) 85%
E) 100%
Correct Answer: C) 75%
Rationale: Operations "on rubber" (without outriggers) are more dangerous. Safety
standards (ASME/OSHA) mandate that the rated capacity for these lifts does not exceed
75% of the static tipping load to provide a safety margin for movement and ground
variations.
Question 7
According to OSHA 1926 Subpart CC, what specific safety equipment is mandatory for all
, 3
telescopic boom cranes?
A) An anemometer (wind gauge)
B) A boom angle indicator
C) A backup camera
D) A global positioning system (GPS)
E) An automatic fire suppression system
Correct Answer: B) A boom angle indicator
Rationale: Because the capacity of a telescopic crane changes drastically with the angle of
the boom, OSHA requires a functional indicator to be clearly visible to the operator to
ensure they stay within the load chart parameters.
Question 8
When evaluating the load chart for a jib, the capacities listed are primarily based on:
A) The stability of the carrier
B) The weight of the counterweight
C) Structural strength
D) The speed of the wind
E) The diameter of the wire rope
Correct Answer: C) structural strength
Rationale: Unlike the main boom, which is often limited by stability (tipping), jibs are long,
slender attachments that are almost always limited by their own structural integrity or the
structural capacity of the boom tip they are attached to.
Question 9
When lifting a load over a corner, the ground pressure generated by the outrigger can approach a
weight that is:
A) Equal to the load weight only
B) Half the weight of the crane
C) Equal to the weight of the crane and the suspended load
D) 25% of the crane's total mass
E) The weight of the counterweight divided by four
Correct Answer: C) equal to the weight of the crane and suspended load
Rationale: As a crane swings over a corner outrigger, the center of gravity shifts toward that
point. In extreme cases, nearly 100% of the combined weight of the machine and the load is
concentrated on that single outrigger pad.
Question 10
What is the primary purpose of a boom length indicator on a telescopic crane?
A) To tell the operator how high the load is
B) To measure the distance from the crane to the load
C) To indicate the current extended length of the boom
