5. A preferred structure of soil is one which has
-sized pore
spaces which alow for some...
Engineering, 05.05.2020 00:09 ronniem
5. A preferred structure of soil is one which has
-sized pore
spaces which alow for some drainage, yet do not hold water too closely to
the soil particles.
A Small
B. Medium
C. Large
D. Extra large
Answers: 3
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An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
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Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
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Answers: 2
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