1.If the slope length of an inclined plane is 9 m, and the height is 3.5 m, what is its mechanical advantage? 2.If the thickness of a wedge is .5 m and the length is 2m. What is the mechanical advantage of the wedge ?

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.

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

Wiy doeres rere okhn a pump whon working betwon the same pressure range?