Download Aptitude Crack
img not found img not found

UPSC Civil Service Exam Questions - Engineering

Q1:

A truss ABC, carries two horizontal and two vertical loads, as shown in the figure. The horizontal and vertical components of the reaction at A will be

A HA = 1000 kN ; VA = 1706.25 kN

B HA = 2000 kN ; VA = 2550 kN

C HA = 1000 kN ; VA = 2550 kN

D HA = 2000 kN ; VA = 1706.25 kN

ANS:B - HA = 2000 kN ; VA = 2550 kN

Moment at B= 0,
Va x 16-2000 x 12-550x6-1000x9 - 1000 x 4.5=0,
Va = 2550 kN.

Moment at C=0,
-Ha x 9 + Va x 4 + 1000x4.5 + 550x6 = 0,
Ha = 2000 kN.