Project ForgeA four bar mechanism is made up of links of length 100, 200, 300 and 350 mm. If the 350 mm link is fixed, the number of links that can rotate fully is __________.
Explanation
Shortest S=100, longest L=350, others P=200,Q=300. S+L=450 < P+Q=500, so it satisfies Grashof's law. Fixing the link opposite the shortest link (here, the 350 mm longest link is opposite the 100 mm shortest link in the loop) gives a double-rocker mechanism, in which neither link adjacent to the fixed frame can rotate fully — only the coupler link (connecting the two rocking links) makes a complete revolution. So exactly 1 link rotates fully.
Source: GATE ME 2018 Session 1 (Set 1) (2018)
This question is part of a 15-day revision cycle — sign in and Project Forge will bring it back the day before you'd forget it.