NCCCO CORE Latest Update - 120

NCCCO CORE Latest Update - 120 Questions and 100% Verified Correct Answers Guaranteed A+

A crane is at the point of instability when the crane's leverage on the load equals: -

CORRECT ANSWER: 100% of the load's leverage on the crane

A mobile crane's jib is offset 15º versus its original 0º offset, but the boom angle remains unchanged. In this situation, the load radius: - CORRECT ANSWER: increases

A sudden start or stop of the hoisting function while operating a mobile crane can produce a: - CORRECT ANSWER: dynamic load

Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major

effect? - CORRECT ANSWER: Collapsing the boom.

According to ASME which of the following listed below shall NOT be used for the

suspension system on suspended personnel platforms? - CORRECT ANSWER:

Synthetic web bridle

According to OSHA 1926 1408, for power lines rated 100kV the minimum clearance

between the crane and any lines shall be? - CORRECT ANSWER: 15 feet

w/encroachment precautions

According to OSHA 1926 1408, when operating near high voltage power lines, what clearance shall be required when the rating of the lines is 275kV? - CORRECT

ANSWER: 20 feet w/encroachment precautions

According to OSHA 1926, 1431, at wind speed must a qualified person be consulted? -

CORRECT ANSWER: 20 mph

• / 2

According to OSHA 1926. 1408, the minimum clearance between any part of the crane and power lines rated 50kV or below shall be: - CORRECT ANSWER: 10 feet w/encroachment precautions

According to OSHA 1926. 1411, when you encounter power lines with a voltage of 44kV and the crane is TRAVELING, according to Table T, what is the minimum required

clearance? - CORRECT ANSWER: 6ft

According to OSHA 1926. 1431, during personnel platform hoisting operations access

gates NOT swing in which direction? - CORRECT ANSWER: Outward

According to OSHA 1926. 1431, while hoisting a personnel platform, what weather condition listed below will promptly discontinue the operation? - CORRECT ANSWER: Dangerous

According to OSHA 1926.1431, which device listed below must be attached to the

crane? - CORRECT ANSWER: Anti-two-block

According to OSHA 1926.1431, which of these hoist options is prohibited? - CORRECT

ANSWER: Hoist free fall

According to OSHA table T, what is the minimum clearance for 133kV power lines? -

CORRECT ANSWER: 10ft

According to OSHA when is it safe to hoist loads with a mobile crane below energized

power lines? - CORRECT ANSWER: When the fully extended boom can't reach the

prohibited zone.

According to OSHA, each series of voice signals contain how many elements? -

CORRECT ANSWER: Three

According to OSHA, mobile crane load block hooks must not have a twist in excess of: -

CORRECT ANSWER: 0

• / 2