Water flowing in a smooth 6-cm-diameter pipe enters a venturi contraction with a throat diameter of 3 cm. upstreampressure is 120 kpa. if cavitation occurs in the throat at a flow rate of 155 gal/min, what is the estimated fluid vaporpressure. assuming ideal frictionless flow? (a) 6 kf‘a,(bl 12 kpa.(c) 24 kpa,(m 31 kpa.(e) 52 kpa

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.