Consider an isolator with critical flashover voltage of 64,217.5 V, supporting a line with capacitance per unit length =...
Consider an isolator with critical flashover voltage of 64,217.5 V, supporting a line with capacitance per unit length = 2.4 x 10-6 F, and inductance per unit length=5mH. Compute Imin.
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Consider an isolator with critical flashover voltage of 64,217.5 V, supporting a line with capacitance per unit length =...
Consider an isolator with critical flashover voltage of 55,823.2 V, supporting a line with capacitance per unit length =...
Consider an isolator with critical flashover voltage of 55,823.2 V, supporting a line with capacitance per unit length = 1.2 x 10-6 F, and inductance per unit length=2mH. Compute Imin.
Consider an RLC circuit with resistance 21Ω , inductance 0.1H, capacitance 2500μF' and an impressed voltage, provided by an alternating current generator, with V-75V, 120Hz. At t-0 V-0V, Q-4C, 1-...
Consider an RLC circuit with resistance 21Ω , inductance 0.1H, capacitance 2500μF' and an impressed voltage, provided by an alternating current generator, with V-75V, 120Hz. At t-0 V-0V, Q-4C, 1-1A a. Complete the ODE below in terms of the charge in the circuit Q(t) Preview Q"+ Preview Q Preview Q- Preview b. Solve the ODE and complete the equation for the charge (t) Preview
Consider an RLC circuit with resistance 21Ω , inductance 0.1H, capacitance 2500μF' and an impressed voltage,...
9. Assuming we found the neutral to line capacitance per phase of a three phase line...
9. Assuming we found the neutral to line capacitance per phase of a three phase line as 8.61x 10 12 F/m, what is the shunt admittance to neutral in S/m or mhos / m? a. 8.61 x 10-9 S/m b. 7.73 x 10-9 S/m c. 3.25 x 10-9 S/m d. 2.22 x 10-9 S/m 10. For a single phase line with two 3/0 12 strand copper conductors spaced 6 ft between centers. Determine the line to line capacitance Cxy in...
HUIS ASR YOUR TEACHER A transmission line that has a resistance per unit length of 1200000.00...
HUIS ASR YOUR TEACHER A transmission line that has a resistance per unit length of 1200000.00 10-40/m is to be used to transmit 5.00 MW over 400 miles (6.44 x 105 m). The output voltage of the generator is 4.50 kv (rms). (a) What is the line loss if a transformer is used to step up the voltage to 101 kV (rms)? kW (b) What fraction of the input power is lost to the line under these circumstances? (c) What...
3.8 A 275 kV three-phase transmission line of length 96 km is rated at 800 A....
3.8 A 275 kV three-phase transmission line of length 96 km is rated at 800 A. The values of resistance, inductance and capacitance per phase per kilometre are 0.078 12, 1.056 mH and 0.029 F, respectively. The receiving-end voltage is 275 kV when full load is transmitted at 0.9 power factor lagging. Calculate the sending-end voltage and current, and the transmission efficiency, and com- pare with the answer obtained by the short-line representation. Use the nomi- nal n and T...
a) A parallel plate transmission line has a plate width 3 mm, plate separation 0.3 mm...
a) A parallel plate transmission line has a plate width 3 mm, plate separation 0.3 mm and is filled with a dielectric of relative permittivity 2.2. The dielectric breakdown field is 180kV/cm. Find the maximum peak power that can be transmitted down it and the corresponding peak values of the transmission line voltages and currents when the transmission line is matched to a terminating load. (5 marks) b) A 1 GHz signal of voltage amplitude 0.1 Vis propagated without reflection...
A coaxial line has an inner and outer conductor radius a = 0.5 cm and b...
A coaxial line has an inner and outer conductor radius a = 0.5 cm and b = 1 cm, respectively. The line is filled with an insulating material where u = Mo and ε = 2.25€0. The operating frequency is f = 1 GHz. The conductors and the dielectric have conductivities oc = 5.8 x 107 - and o = 10-3, respectively. (a) Calculate the per-unit-length inductance and capacitance L' and C', respectively, the phase velocity Vp, the characteristic impedance...
INFINITE WIRE Consider an infinite line of charge with charge per unit length A. Calculate the...
INFINITE WIRE Consider an infinite line of charge with charge per unit length A. Calculate the electric field a distance z away from the wire. Namely z is the distance to the closest point on the wire. We will calculate this electric field in two different ways. 1.1 20 POINTS Calculate it using Coulomb's Law. 1.2 15 POINTS Calculate it using Gauss' Law.
3. Consider a "line of charge", where the positive charge per unit length is 1 (in...
3. Consider a "line of charge", where the positive charge per unit length is 1 (in C/m) and the line is "infinitely long". a) Draw the line of charge horizontally on the page. Attempt to draw the E field lines around the line of charge. b) Draw a point on the page that is acting as the cross-section of the line of charge exiting the page. Attempt to draw the electric field lines around the line of charge. c) Choose...
2. Lumped versus distributed circuits (15%) (a) A transmission line of length 1 connects a load...
2. Lumped versus distributed circuits (15%) (a) A transmission line of length 1 connects a load to a sinusoidal voltage source with an oscillation frequency of f. Assuming that the velocity of wave propagation in the line is c (that is, the speed of light in vacuum), for which of the following sit- uations can we model the transmission line as a wire (that is, use a lumped-element model) and where do we need a distributed model? (i) f =...
Consider an RLC circuit with resistance 21Ω , inductance 0.1H, capacitance 2500μF' and an impressed voltage, provided by an alternating current generator, with V-75V, 120Hz. At t-0 V-0V, Q-4C, 1-1A a. Complete the ODE below in terms of the charge in the circuit Q(t) Preview Q"+ Preview Q Preview Q- Preview b. Solve the ODE and complete the equation for the charge (t) Preview
Consider an RLC circuit with resistance 21Ω , inductance 0.1H, capacitance 2500μF' and an impressed voltage,...
9. Assuming we found the neutral to line capacitance per phase of a three phase line as 8.61x 10 12 F/m, what is the shunt admittance to neutral in S/m or mhos / m? a. 8.61 x 10-9 S/m b. 7.73 x 10-9 S/m c. 3.25 x 10-9 S/m d. 2.22 x 10-9 S/m 10. For a single phase line with two 3/0 12 strand copper conductors spaced 6 ft between centers. Determine the line to line capacitance Cxy in...
HUIS ASR YOUR TEACHER A transmission line that has a resistance per unit length of 1200000.00 10-40/m is to be used to transmit 5.00 MW over 400 miles (6.44 x 105 m). The output voltage of the generator is 4.50 kv (rms). (a) What is the line loss if a transformer is used to step up the voltage to 101 kV (rms)? kW (b) What fraction of the input power is lost to the line under these circumstances? (c) What...
3.8 A 275 kV three-phase transmission line of length 96 km is rated at 800 A. The values of resistance, inductance and capacitance per phase per kilometre are 0.078 12, 1.056 mH and 0.029 F, respectively. The receiving-end voltage is 275 kV when full load is transmitted at 0.9 power factor lagging. Calculate the sending-end voltage and current, and the transmission efficiency, and com- pare with the answer obtained by the short-line representation. Use the nomi- nal n and T...
a) A parallel plate transmission line has a plate width 3 mm, plate separation 0.3 mm and is filled with a dielectric of relative permittivity 2.2. The dielectric breakdown field is 180kV/cm. Find the maximum peak power that can be transmitted down it and the corresponding peak values of the transmission line voltages and currents when the transmission line is matched to a terminating load. (5 marks) b) A 1 GHz signal of voltage amplitude 0.1 Vis propagated without reflection...
A coaxial line has an inner and outer conductor radius a = 0.5 cm and b = 1 cm, respectively. The line is filled with an insulating material where u = Mo and ε = 2.25€0. The operating frequency is f = 1 GHz. The conductors and the dielectric have conductivities oc = 5.8 x 107 - and o = 10-3, respectively. (a) Calculate the per-unit-length inductance and capacitance L' and C', respectively, the phase velocity Vp, the characteristic impedance...
INFINITE WIRE Consider an infinite line of charge with charge per unit length A. Calculate the electric field a distance z away from the wire. Namely z is the distance to the closest point on the wire. We will calculate this electric field in two different ways. 1.1 20 POINTS Calculate it using Coulomb's Law. 1.2 15 POINTS Calculate it using Gauss' Law.
3. Consider a "line of charge", where the positive charge per unit length is 1 (in C/m) and the line is "infinitely long". a) Draw the line of charge horizontally on the page. Attempt to draw the E field lines around the line of charge. b) Draw a point on the page that is acting as the cross-section of the line of charge exiting the page. Attempt to draw the electric field lines around the line of charge. c) Choose...
2. Lumped versus distributed circuits (15%) (a) A transmission line of length 1 connects a load to a sinusoidal voltage source with an oscillation frequency of f. Assuming that the velocity of wave propagation in the line is c (that is, the speed of light in vacuum), for which of the following sit- uations can we model the transmission line as a wire (that is, use a lumped-element model) and where do we need a distributed model? (i) f =...
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