UDT Trener

Question #617

What does the marking 20/5 t on an overhead crane mean?

Co oznacza informacja 20/5 t umieszczona na suwnicy?

a
the crane's rated capacity is 5 t and its lifting height is 20 m

udźwig suwnicy wynosi 5 t, a wysokość podnoszenia 20 m

b
the crane's rated capacity is 20 t, with a temporary overload of 5 t permitted

udźwig suwnicy wynosi 20 t z możliwością krótkotrwałego jej przeciążenia o 5 t

c
the crane's total rated capacity is 25 t

udźwig suwnicy wynosi łącznie 25 t

d
none of the above answers is correct

żadna z powyższych odpowiedzi nie jest prawidłowa

Correct answer

Why?

The marking 20/5 t gives the rated capacity (udźwig) of two hoisting mechanisms (mechanizmy podnoszenia): the main hoist at 20 t and the auxiliary hoist at 5 t. It does not mean a combined capacity of 25 t or permission to overload by 5 t. None of the three descriptions expresses this meaning.

Report an error

Categories for this question

Take a test in this categoryStudy this category