Engineering, 09.02.2021 16:10 mommy562
An analog signal having frequency as 4,90 KHz is digitized with 5 bits and stored in a file. If the file size is 1,08 Mbit , which answer is correct?
a.
Date Rate = 35,9 Kbps Duration of the Signal = 26 minute
b.
Date Rate = 49 Kbps Duration of the Signal = 22 minute
c.
Date Rate = 29,4 Kbps Duration of the Signal = 37 minute
d.
Date Rate = 49,1 Kbps Duration of the Signal = 22 minute
e.
Date Rate = 42,5 Kbps Duration of the Signal = 27 minute
Answers: 2
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
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Engineering, 04.07.2019 18:10
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?
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Engineering, 04.07.2019 18:10
The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length
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Engineering, 04.07.2019 18:20
Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false
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An analog signal having frequency as 4,90 KHz is digitized with 5 bits and stored in a file. If the...
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