GSK Exit Exam • Set 15 Question 20 of 30
The lower the angle of the boom of the derrick or crane
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Direct Answer
Option C: Lesser will be the lifting capacity
The lower the angle of the boom of a derrick or crane relative to the horizontal, the lesser will be its lifting capacity. This is due to the increased load on the hoisting wires and the reduced mechanical advantage.
All Options
A
Lesser will be the hoisting rate
B
Greater will be the lifting capacity
C
Lesser will be the lifting capacity
(Correct Answer)
D
Greater will be the hoisting rate
Detailed Explanation & Context
The lower the angle of the boom of a derrick or crane relative to the horizontal, the lesser will be its lifting capacity. This is due to the increased load on the hoisting wires and the reduced mechanical advantage.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • General Ship Knowledge (GSK).
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