Choose the correct word or phrase to complete the sentence to explain human intervention in a machine system. In (blank)
machine systems, human intervention is the least used and people are responsible for
(blank)

First Blank Options
-manual
-semi-automated
-fully-automated

Second Blank Options
-moving material around
-periodic maintenance activities
-operating the machine

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.