2. Design a no quick return four-bar mechanism to provide 50o. The rocker is 2 in. and the coupler is 4 in. Complete your drawing to clearly show the links with the different extreme positions. Write down the dimensions of each link and check for Grashof.

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.