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Home Question Bank Engineering Archive 2024 December 09

Engineering Questions from Dec 09,2024

Browse the Engineering Q&A Archive for Dec 09,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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LBF (102BeD) ame: Kon Kim Hon Class: A An air handling unit (AHU) motor in a hotel consumes 32 KW of real power and being supplied with 35.5 kVA of apparent power, Determine; (a) the reactive power drawn by the motor, (Ans: 15.37 KVAn (b) the power factor of the motor, (Ans: 0.9014 ) A PVC wastewater sewer pipe with an inside diameter of 375 mm has a slope of \( 0.017 \mathrm{~m} / \mathrm{m} \). Calculate the pipe's full flow capacity in \( \mathrm{m}^{3} / \mathrm{s} \) (accurate to 4 dec .pl.). Manning's roughness coefficient for PVC is 0.010 . Determine the slope required in \( \mathrm{m} / \mathrm{m} \) (accurate to three decimal places) for a 750 mm diameter PVC wastewater sewer, to achieve a full flow velocity of \( 1.92 \mathrm{~m} / \mathrm{s} \). Manning's roughness coefficient for PVC is 0.010 . A new residential subdivision is estimated to have a peak sewage flow rate (Q) of \( 0.2474 \mathrm{~m}^{3} / \mathrm{s} \). The proposed concrete wastewater sewer carrying sewage from the subdivision drops 0.622 m in elevation over a distance of 285 m to connect to a larger sanitary trunk sewer. Determine the EXACT diameter in mm (accurate to the nearest mm ) of sewer pipe required to carry this wastewater. Determine the full flow velocity of wastewater (accurate to 2 dec.pl.) in a concrete sewer with a diameter of 425 mm and a slope of \( 0.017 \mathrm{~m} / \mathrm{m} \). A new residential subdivision is estimated to have a peak sewage flow rate \( (\mathrm{Q}) \) of \( 0.2474 \mathrm{~m}^{3} / \mathrm{s} \). The proposed concrete wastewater sewer carrying sewage from the subdivision drops 0.622 m in elevation over a distance of 285 m to connect to a larger sanitary trunk sewer. Determine the EXACT diameter in mm (accurate to the nearest mm ) of sewer pipe required to carry this wastewater. EXERCICE 4: Un multimètre numérique possède les caractéristiques suivantes: - calibres : 16 bits; 1. Pour chaque calibre, indiquer le pas du CAN de ce multimètre. 2. Pour le calibre \( \pm 200 \mathrm{mV} \), le multimètre affiche une tension de \( 176,02 \mathrm{mV} \). a. Ce format d'affichage paraît-il approprié compte tenu de la résolution du CAN? b. Évaluer l'incertitude relative, due au pas du CAN, portant sur une mesure de \( 176,02 \mathrm{mV} \) Donnée: \( \mathrm{p}=\frac{\text { plage de mesure }}{2^{\mathrm{n}}} \) avec \( n \) le nombre de bits du convertisseur Pouer facter is the effleient of the mpter. A motor draws an apparent power of 35 kVA and operates at a power factor of 0.92. Determine the eral power and the reactive power drawn by the motor. Formula: Power factor = Real / Apparent power App Power \( { }^{2}= \) Real Power \( ^{2}+ \) Reactive Power \( { }^{2} \) A motor draws an apparent power of 35 kVA and operates at a power factor c 0.92. Determine the real power and the reactive power drawn by the motor. Formula: Power factor \( = \) Real / Apparent power App Power \( { }^{2}= \) Real Power \( { }^{2}+ \) Reactive Power [4 marks] O1PEE (DEBF1) ¿Qué tipo de procedimiento se emplea para obtener los cálculos de momentos de inercia?
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