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GATE Exam Questions - Engineering

Q1:

The maximum permissible deflection for a gantry girder, spanning over 6 m, on which an EOT (electric overhead travelling) crane of capacity 200 kN is operating, is

A 8 mm

B 10 mm

C 12 mm

D 18 mm

ANS:A - 8 mm

In hoists and EOT two types of deflections are observed.

Vertical deflection = Span /900 = 6000/900 = 6.66mm
Whereas horizontal deflection = 6000/750 = 8mm.

The maximum value is 8mm hence Answer A is correct.