Engineering, 19.05.2020 13:01 la200564
The effective resistance of parallel resistors is always than the lowest individual value.
a) more
b) less
c) no different than
Answers: 2
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Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
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The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object
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Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false
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The effective resistance of parallel resistors is always than the lowest individual value.
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