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Engineering

A wet cooling tower is to cool 60 kg/s of water from 40 to 33°C. Atmospheric air enters the tower at 1 atm with dry-and wet-bulb temperatures of 22 and 16°C, respectively, and leaves at 30°C with a relative humidity of 95 percent. Using the psychrometric chart, determine (a) the volume flow rate of air into the cooling tower and (b) the mass flow rate of the required makeup water.

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Engineering

The 40-ft-long A-36 steel rails on a train track are laid with a small gap between them to allow for thermal expansion. Determine the required gap delta so that the rails just touch one another when the temperature is increased from T1, = - 20°F to T2 = 90°F. Using this gap, what would be the axial force in the rails if the temperature were to rise to T3 = 110 degree F?

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Engineering

A platinum resistance temperature sensor has a resistance of 120 Ω at 0℃ and forms one arm of a Wheatstone bridge. At this temperature the bridge is balanced with each of the other arms being 120 Ω. The temperature coefficient of resistance of the platinum is 0.0039/K. What will be the output voltage from the bridge for a change in temperature of 20℃? The loading across the output is effectively open circuit and the supply voltage to the bridge is from a source of 6.0 V with negligible internal resistance.

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Engineering

14. A (n) ___ is a standard method of showing shortened views of elongated objects.

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Engineering

Soil is to be excavated from a borrow pit to construct a 100-m-long trapezoidal levee that is 3 meters high, 5 meters wide at the top, and 15 meters wide at the base. The in situ total unit weight of the soil in the borrow pit is 21.7 kN/m3 with a water content of 11.4%. If levee construction requires the soil to be placed at a void ratio of 0.47, determine the volume that should be excavated from the borrow pit.

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Engineering

Two identical bulbs are connected to a 12-volt battery in parallel. The voltage drop across the first bulb is 12 volts as measured with a voltmeter. What is the voltage drop across the other bulb?

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Engineering

17. Which of the following is most often added to safety glasses to provide

better protection from impact and flying particles?

A. Infrared lenses

B. Scratch resistant coating

C. Side shields

D. Glass lenses

Mark brainliest

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Engineering

Design a stepped-impedance low-pass filter having a cutoff frequency of 3 GHz and a fifth-order 0.5 dB equal-ripple response. Assume R0 = 50, Zl = 15, and Zh = 120. (a) Find the re - quired electrical lengths of the five sections, and use CAD to plot the insertion loss from 0 to 6 GHz. (b) Lay out the microstrip implementation of the filter on an FR4 substrate having εr = 4.2,

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Engineering

When will the entropy value of the universe attained its maximum value?

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Jaslene Richards

Engineering

How are fossil fuels made?

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Engineering

If i see i dead army person will i be asked questions and if i see the person who did it

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Anthony Leblanc

Engineering

Question 7 options: A steel tape that has a length of 100.00 at 68 degrees F is to be used to lay off a building with the dimensions 450.00 ft by 515.00 ft. What should the tape readings be if the tape temperature is 104 degrees F at the time of measurement

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Engineering

Name the four basic families of shape production processes. Explain the main advantages and disadvantages of each one.

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Engineering

In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by a a) - absorber, generator and liquid pump. b) - absorber and generator. c) - liquid pump. d) - generator.

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Engineering

The density of oxygen contained in a tank is 2.0 kg/m3 when the temperature is 25 °C. Determine the gage pressure of the gas if the atmospheric pressure is 97 kPa.

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