For an ideal transformer, what is the ratio in terms of winding, current, and voltage? Explain...
For an ideal transformer, what is the ratio in terms of winding, current, and voltage? Explain how you derive it and what is Zp = a^2 * Z_L ? Why is it a^2 and not just a?
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For an ideal transformer, what is the ratio in terms of winding,
current, and voltage? Explain...
Question 1 Assume the transformer to be ideal. Winding 1 is applied a sinusoidal voltage in...
Question 1 Assume the transformer to be ideal. Winding 1 is applied a sinusoidal voltage in steady state with 120 20° V at a frequency f 50 Hz. N1/N2=4. The load on winding 2 is a series combination of R and L with Z 4+j5 . Calculate the current drawn from the voltage source.
Q1: For ideal transformers, can you explain the ratio between windings, current, and voltage. And explain...
Q1: For ideal transformers, can you explain the ratio between windings, current, and voltage. And explain the relationships of the ratios when the circuit is referred to primary and secondary. Show the proof. Q2: Using the ideal transformer ratio, how do we find its referred( primary or secondary) impedance. Q3: Show the proof for reactance and resistance when referred to primary or secondary. Hint : R= a^2 * R , R/a^2 How do we know when to use these formulas?
A generator transformer has a magnetising current of 1.5 %. The primary winding voltage is 27 kV and the secondary voltage is 330kV. The transformer rating is 360 MVA. What is the allowable operating...
A generator transformer has a magnetising current of 1.5 %. The primary winding voltage is 27 kV and the secondary voltage is 330kV. The transformer rating is 360 MVA. What is the allowable operating current differential, in terms of Amperes on the primary, that should not cause the protection to operate? Select one: a. 200.00 Amperes b. 31.08 Amperes c. 115.47 Amperes d. 66.00 Amperes
An ideal transformer has a primary winding with 100 turns and a secondary winding with 20...
An ideal transformer has a primary winding with 100 turns and a secondary winding with 20 turns. If the primary winding has a voltage drop of 10 V AC, what is the EMF in the secondary coil? A. 100 V AC B. 10 V AC C. 2 V AC D. 20 V AC
Problem 1: The secondary winding of a transformer has a terminal voltage of v, (t) 282.8...
Problem 1: The secondary winding of a transformer has a terminal voltage of v, (t) 282.8 sin 377t V. The turns ratio of the transformer is 100:200 (a0.50) The impedances of this transformer referred to the primary side are The equivalent circuit is shown below lf (a) If the secondary current of the transformer is i,()-7.07sin(3771-36.87) A, what is the primary current of this transformer? (20 points) HINTS: I. Peak values of the secondary voltage and current are specified in...
2. The secondary winding of a transformer has a terminal voltage of (t)=169.7 sin3141 V. The...
2. The secondary winding of a transformer has a terminal voltage of (t)=169.7 sin3141 V. The turn ratio of the transformer is 40:200. The impedances of this transformer referred to the primary side are: Rey-0.15 2. Re-50 Q2, X-0.25 S2, X-25 . If the secondary current of the transformer is i,(0=14.14 sin(3141-53.139) A, (a) What is the primary current of this transformer? (10%) (b) What are its voltage regulation and efficiency? (10%)
In the circuit shown in Fig. I, T is an ideal transformer whose turns ratio n/n...
In the circuit shown in Fig. I, T is an ideal transformer whose turns ratio n/n is 2, where ni and n are the number of turns of the primary winding and the number of turns of the secondary winding, respectively; V is a sinusoidal voltage source whose phasor voltage is 240v2 L45 V; ZI and Z2 are two loads and their impedances are Z1-8Q, Z2-2p. Find phasor current i1, i2 and phasor voltage V1 and V2 Z1 V1 Fig.
1kVA ideal single phase step-up transformer
Q1 A 1kVA ideal single phase step-up transformer is supplied by a 24 V ac power source and is delivering power to a 10 Ω resistive load connected to the secondary side. If the transformer is operated at full load (1kVA), determine, a) the secondary current IS; (3 marks) b) the secondary voltage VS; (2 marks) c) the primary current IP; (2 marks) d) the turn ratio of primary winding to secondary winding; and (2 marks) e) the number of...
Q1. The secondary winding of a transformer has a terminal voltage of Vs(t) = 325.27 sin...
Q1. The secondary winding of a transformer has a terminal voltage of Vs(t) = 325.27 sin 3770 V. The turns ratio of the transformer is 100:200 (a = 0.50). If the secondary current of the transformer is Is(t) = 11.32 sin (377t - 36.87°) A, The impedances of this transformer referred to the primary side are Req=0.2002 Rc =95022 Xeq=0.7500 Xm=3800 c) Obtain the efficiency of the transformer (10 marks
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)...
Question 1 Assume the transformer to be ideal. Winding 1 is applied a sinusoidal voltage in steady state with 120 20° V at a frequency f 50 Hz. N1/N2=4. The load on winding 2 is a series combination of R and L with Z 4+j5 . Calculate the current drawn from the voltage source.
Problem 1: The secondary winding of a transformer has a terminal voltage of v, (t) 282.8 sin 377t V. The turns ratio of the transformer is 100:200 (a0.50) The impedances of this transformer referred to the primary side are The equivalent circuit is shown below lf (a) If the secondary current of the transformer is i,()-7.07sin(3771-36.87) A, what is the primary current of this transformer? (20 points) HINTS: I. Peak values of the secondary voltage and current are specified in...
2. The secondary winding of a transformer has a terminal voltage of (t)=169.7 sin3141 V. The turn ratio of the transformer is 40:200. The impedances of this transformer referred to the primary side are: Rey-0.15 2. Re-50 Q2, X-0.25 S2, X-25 . If the secondary current of the transformer is i,(0=14.14 sin(3141-53.139) A, (a) What is the primary current of this transformer? (10%) (b) What are its voltage regulation and efficiency? (10%)
In the circuit shown in Fig. I, T is an ideal transformer whose turns ratio n/n is 2, where ni and n are the number of turns of the primary winding and the number of turns of the secondary winding, respectively; V is a sinusoidal voltage source whose phasor voltage is 240v2 L45 V; ZI and Z2 are two loads and their impedances are Z1-8Q, Z2-2p. Find phasor current i1, i2 and phasor voltage V1 and V2 Z1 V1 Fig.
Q1. The secondary winding of a transformer has a terminal voltage of Vs(t) = 325.27 sin 3770 V. The turns ratio of the transformer is 100:200 (a = 0.50). If the secondary current of the transformer is Is(t) = 11.32 sin (377t - 36.87°) A, The impedances of this transformer referred to the primary side are Req=0.2002 Rc =95022 Xeq=0.7500 Xm=3800 c) Obtain the efficiency of the transformer (10 marks
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)...
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