Engineering, 25.10.2021 14:00 mariiuuuh
Một đường dây 10KV cấp điện cho 2 phụ tải có thông số như 2AC-50,5Km, AC-50, 3Km. Hãy xác định giá tiền tổn thất điện năng 1 năm trên đường dây, biết X0=0,4 (Ω/Km), c=500(đ/KWh)
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Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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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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Một đường dây 10KV cấp điện cho 2 phụ tải có thông số như 2AC-50,5Km, AC-50, 3Km. Hãy xác định giá t...
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