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A 6-mm-diameter electrical transmission line carries an electric current of 50 A. If the surface temperature...
Please show claer solve for ( a,c,d,e ) of this qustion. mm, electrical resistance per unit...
Please show claer solve for ( a,c,d,e ) of this qustion.
mm, electrical resistance per unit length An electrical transmission line (diameter: D=5 r=0.002 Ω/m) carries an electric current (1-100 A), dissipating an electrical power per unit length inr. On a windy day, the line is subjected to air flow (air temperature: T. -10C, air velocity V 50 km/hr) T, 10°C V 50 km/hr T, =? 1 -100 A air elec electrical line We would like to determine the surface...
View Policies Show Attempt History An aluminum transmission line with a diameter of 20 mm has...
View Policies Show Attempt History An aluminum transmission line with a diameter of 20 mm has an electrical resistance of Relec' = 2.636 x 109/m and carries a current of 700 A. The line is subjected to frequent and severe cross winds, increasing the probability of contact between adjacent lines, thereby causing sparks and creating a potential fire hazard for nearby vegetation. The remedy is to insulate the line, but with the adverse effect of increasing the conductor operating temperature....
QUESTION 6 A long 6-cm-diameter steam pipe whose external surface temperature is 90°C passes through some...
QUESTION 6 A long 6-cm-diameter steam pipe whose external surface temperature is 90°C passes through some open area that is not protected against the winds. Determine the rate of heat loss from the pipe per unit of its length when the air is at 1 atm pressure and 7"C and the wind is blowing across the pipe at a velocity of 30 km/h. Use k 0.02724 W/m.°C; v- 1.78 x 10 m-/s; Pr 0.7232. Calculate Reynolds Number O 100896.9 O...
In communications. 6 Both conductors of a two-wire transmission line are steel wires (1cm diameter, ơsteel-5x10 U/m, μ = 10 H/m) , with a 1-mm thick copper coating. If the wires have a center-to-c...
In communications.
6 Both conductors of a two-wire transmission line are steel wires (1cm diameter, ơsteel-5x10 U/m, μ = 10 H/m) , with a 1-mm thick copper coating. If the wires have a center-to-center separation of 5cm in air, find C, L, G and R at ω = 10 rad/s
6 Both conductors of a two-wire transmission line are steel wires (1cm diameter, ơsteel-5x10 U/m, μ = 10 H/m) , with a 1-mm thick copper coating. If the wires have...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pre...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
Please show claer solve for ( a,c,d,e ) of this qustion.
mm, electrical resistance per unit length An electrical transmission line (diameter: D=5 r=0.002 Ω/m) carries an electric current (1-100 A), dissipating an electrical power per unit length inr. On a windy day, the line is subjected to air flow (air temperature: T. -10C, air velocity V 50 km/hr) T, 10°C V 50 km/hr T, =? 1 -100 A air elec electrical line We would like to determine the surface...
View Policies Show Attempt History An aluminum transmission line with a diameter of 20 mm has an electrical resistance of Relec' = 2.636 x 109/m and carries a current of 700 A. The line is subjected to frequent and severe cross winds, increasing the probability of contact between adjacent lines, thereby causing sparks and creating a potential fire hazard for nearby vegetation. The remedy is to insulate the line, but with the adverse effect of increasing the conductor operating temperature....
QUESTION 6 A long 6-cm-diameter steam pipe whose external surface temperature is 90°C passes through some open area that is not protected against the winds. Determine the rate of heat loss from the pipe per unit of its length when the air is at 1 atm pressure and 7"C and the wind is blowing across the pipe at a velocity of 30 km/h. Use k 0.02724 W/m.°C; v- 1.78 x 10 m-/s; Pr 0.7232. Calculate Reynolds Number O 100896.9 O...
In communications.
6 Both conductors of a two-wire transmission line are steel wires (1cm diameter, ơsteel-5x10 U/m, μ = 10 H/m) , with a 1-mm thick copper coating. If the wires have a center-to-center separation of 5cm in air, find C, L, G and R at ω = 10 rad/s
6 Both conductors of a two-wire transmission line are steel wires (1cm diameter, ơsteel-5x10 U/m, μ = 10 H/m) , with a 1-mm thick copper coating. If the wires have...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
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