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2. (5 points) Draw directions of current ( LL) and flux (0.02 for the transformer and...
Autotransformers (30 Points) Given: 50kVA, 2400V:240V Transformer. If the transformer above is reconnected as an autotransformer...
Autotransformers (30 Points) Given: 50kVA, 2400V:240V Transformer. If the transformer above is reconnected as an autotransformer with. o LV coil is labeled as terminal AB OHV coil is labeled as terminal BC o Primary (input) terminal is BC, secondary (output) is AC. Find: Voltage rating for the primary and secondary side of the autotransformer. (10 Points) Calculate the kVA rating of the autotransformer. (10 Points) Show your reasoning. (5 Points) Draw the autotransformer circuit (5 Points)
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The...
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The input side of a transformer is known as the: initial, startup, primary, input. [] The iron core transfers: current, voltage, induction, magnetism. [4] The changing magnetic flux through the secondary coil creates: 2 electricity, magnetic poles, transformers, the flux capacitor. [5] The current flowing through the primary coil creates: magnetism, electric poles, transformers, the flux inductor, [6] The primary coil has the less turns....
A transformer is constructed from a long wire carrying current I-ilocos() passes through a toroid...
A transformer is constructed from a long wire carrying current I-ilocos() passes through a toroidal ferrite which has μ,-100, inner radius-a, outer radius-b, and depth (z dimension) - c. N turns of wire are wrapped tightly around the ferrite. The current creates a magnetic flux through the N-turn coil, which, in turn, induces a voltage, Vind, across the coil, as shown. a) Find an expression for the flux density, B, in the ferrite. b) Find an expression for the flux,...
Problem 3 a- List five different transformer types used in the electric power system. [5 points]...
Problem 3 a- List five different transformer types used in the electric power system. [5 points] Consider a three-winding transformer, as shown in Figure 1, with the following particulars Ze 0.01+j 0.08 V2-440 z,= 0.01 tj 0.08 2-100/-25 Z- 0.01 +j 0.08 s-80/-35° Assume that V2 is the reference phasor, calculate: (a) The intermediate voltage Vo (3 points) (b) The primary current l and the primary voltage V. (3 points) (c) The tertiary voltage Vs referred to the primary side....
2 points Save Answe A 100KVA Transformer supplies a load of O.Spf. The Transformer iron Losses...
2 points Save Answe A 100KVA Transformer supplies a load of O.Spf. The Transformer iron Losses are 5KW and the Copper Losses are at full load are SkW. Calculate the efficiency of the Transformer when working at all of the rated full load. a. 96.89 b. 78.496 C 25 d. 118
Problem 3 Consider a three-winding transformer, as shown in Figure (2.) with the following particulars: Zp=0.025+j0.08...
Problem 3 Consider a three-winding transformer, as shown in Figure (2.) with the following particulars: Zp=0.025+j0.08 V =410 Zs= 0.025+j 0.07 12=55/-30° Z= 0.025+ 0.08 13=45/-40° Assume that V1 is the reference, calculate: (a) The primary current 1: [5 points] (b) The intermediate voltage Vo [5 points) (c) The secondary voltage V2 and tertiary voltage V3 referred to the primary side. [5 points] (d) The apparent powers and power factors at the primary, secondary and tertiary terminals. [5 points) (e)...
For Problems 13 to 14: Figure shows an ideal transformer. V, = 100 cos(8t), N, =...
For Problems 13 to 14: Figure shows an ideal transformer. V, = 100 cos(8t), N, = 40, N, = 8, R, = 492 2.- VUR Problem [13] <5 points> Calculate the magnitude of the flux 0. Problem [14] <5 points> Calculate the magnitude of the current ,
Please answer question 1, a-d Bo cos(wt) 2 (T). o points) A time-varying magnetic flux density...
Please answer question 1, a-d
Bo cos(wt) 2 (T). o points) A time-varying magnetic flux density in space is given by B A closed rectangle loop with sides a and b is centered at the origin and lies in the r-y plane. Solve steps a)-e) to find the induced emf a) (1o points) Draw a sketch in Cartesian coordinates. Show the loop and magnetic flux density b) (5 points) List the appropriate Maxwell equation to solve this problem c) (5...
Problem [2] <10 points> Calculate the total flux o passing through the surface of this loop...
Problem [2] <10 points> Calculate the total flux o passing through the surface of this loop at t=ls. Problem [3] <10 points> Calculate the current on this loop at t =ls. Problem [4] <5 points> What is the direction of the current at t=1s ? Clockwise or counter-clockwise? I For Problems 2 to 4: Figure shows a resistive loop with resistance of 2 Ohms. Magnetic flux density in this region is B = (2zî + 3xý)e-21. Calculate the current on...
roblem 5i Consider the circuit with an ideal transformer shown in Figure 5. 1:2 820 16...
roblem 5i Consider the circuit with an ideal transformer shown in Figure 5. 1:2 820 16 ? V. 2 Figure 5. Ideal transformer circuit Submit the Following in the Online Quiz 20 points : Real and imaginary parts of l 12 1A 20 points: Real and imaginary parts of V, VV 5.a : Determine the numerical value of the phasor current 1, in rectangular form 5.b : Determine the numerical value of the phasor voltage 1z in rectangular form.
Autotransformers (30 Points) Given: 50kVA, 2400V:240V Transformer. If the transformer above is reconnected as an autotransformer with. o LV coil is labeled as terminal AB OHV coil is labeled as terminal BC o Primary (input) terminal is BC, secondary (output) is AC. Find: Voltage rating for the primary and secondary side of the autotransformer. (10 Points) Calculate the kVA rating of the autotransformer. (10 Points) Show your reasoning. (5 Points) Draw the autotransformer circuit (5 Points)
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The input side of a transformer is known as the: initial, startup, primary, input. [] The iron core transfers: current, voltage, induction, magnetism. [4] The changing magnetic flux through the secondary coil creates: 2 electricity, magnetic poles, transformers, the flux capacitor. [5] The current flowing through the primary coil creates: magnetism, electric poles, transformers, the flux inductor, [6] The primary coil has the less turns....
A transformer is constructed from a long wire carrying current I-ilocos() passes through a toroidal ferrite which has μ,-100, inner radius-a, outer radius-b, and depth (z dimension) - c. N turns of wire are wrapped tightly around the ferrite. The current creates a magnetic flux through the N-turn coil, which, in turn, induces a voltage, Vind, across the coil, as shown. a) Find an expression for the flux density, B, in the ferrite. b) Find an expression for the flux,...
Problem 3 a- List five different transformer types used in the electric power system. [5 points] Consider a three-winding transformer, as shown in Figure 1, with the following particulars Ze 0.01+j 0.08 V2-440 z,= 0.01 tj 0.08 2-100/-25 Z- 0.01 +j 0.08 s-80/-35° Assume that V2 is the reference phasor, calculate: (a) The intermediate voltage Vo (3 points) (b) The primary current l and the primary voltage V. (3 points) (c) The tertiary voltage Vs referred to the primary side....
2 points Save Answe A 100KVA Transformer supplies a load of O.Spf. The Transformer iron Losses are 5KW and the Copper Losses are at full load are SkW. Calculate the efficiency of the Transformer when working at all of the rated full load. a. 96.89 b. 78.496 C 25 d. 118
Problem 3 Consider a three-winding transformer, as shown in Figure (2.) with the following particulars: Zp=0.025+j0.08 V =410 Zs= 0.025+j 0.07 12=55/-30° Z= 0.025+ 0.08 13=45/-40° Assume that V1 is the reference, calculate: (a) The primary current 1: [5 points] (b) The intermediate voltage Vo [5 points) (c) The secondary voltage V2 and tertiary voltage V3 referred to the primary side. [5 points] (d) The apparent powers and power factors at the primary, secondary and tertiary terminals. [5 points) (e)...
For Problems 13 to 14: Figure shows an ideal transformer. V, = 100 cos(8t), N, = 40, N, = 8, R, = 492 2.- VUR Problem [13] <5 points> Calculate the magnitude of the flux 0. Problem [14] <5 points> Calculate the magnitude of the current ,
Please answer question 1, a-d
Bo cos(wt) 2 (T). o points) A time-varying magnetic flux density in space is given by B A closed rectangle loop with sides a and b is centered at the origin and lies in the r-y plane. Solve steps a)-e) to find the induced emf a) (1o points) Draw a sketch in Cartesian coordinates. Show the loop and magnetic flux density b) (5 points) List the appropriate Maxwell equation to solve this problem c) (5...
Problem [2] <10 points> Calculate the total flux o passing through the surface of this loop at t=ls. Problem [3] <10 points> Calculate the current on this loop at t =ls. Problem [4] <5 points> What is the direction of the current at t=1s ? Clockwise or counter-clockwise? I For Problems 2 to 4: Figure shows a resistive loop with resistance of 2 Ohms. Magnetic flux density in this region is B = (2zî + 3xý)e-21. Calculate the current on...
roblem 5i Consider the circuit with an ideal transformer shown in Figure 5. 1:2 820 16 ? V. 2 Figure 5. Ideal transformer circuit Submit the Following in the Online Quiz 20 points : Real and imaginary parts of l 12 1A 20 points: Real and imaginary parts of V, VV 5.a : Determine the numerical value of the phasor current 1, in rectangular form 5.b : Determine the numerical value of the phasor voltage 1z in rectangular form.
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