7-if N1=N2 in auto transformer then the percentage copper saving is a) 0% b) 50% c) 100% d) none of the previous
Q: 1) An ideal 480/120 V transformer is carrying a 0.25 A current in its primary side. What is the…
A: We need to find out the power of the given transformer .
Q: During open-circuit test of a transformer, the iron loss of a transformer is negligible. Select one:…
A: The given statement is True. The detailed explanation is provided below.
Q: The copper loss of a transformer is 100KW. At maximum efficiency, constant losses is less than 100kW…
A: For an electrical machine, efficiency is a very important parameter as If the efficiency is higher…
Q: Current Transformer is used to step down the current of power system. Select one: True O False
A: current transformer is used to step down the current of power system.
Q: sentences): 1) In relation to a transformer, the ratio 20 : 1 indicates that for every (20) twenty…
A: As per bartleby guidelines, for more than three true false type questions asked, only first three…
Q: An ideal auto-transformer has its secondary winding labelled as a, b and c. The primary winding has…
A: An ideal auto-transformer works on magnetic as well electrical coupling. A single winding is used as…
Q: The open circuit voltage of a transformer is 240V. A tap-changing device is set to operate when the…
A:
Q: 4.4 A 60HZ, 50KVA, 2400/240 V, single-phase ideal transformer has 50 turns on its secondary winding.…
A: In this question single phase transformer is given....We have to find out primary and secondary…
Q: OFor the circuit below, explain the function of the transformer, then calculate th value of primary…
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Q: The efficiency is maximum in a transformer when constant losses = Iron losses %3D Select one: O True…
A: The given statement is True. The detailed explanation is provided below.
Q: An ideal transformer has a turns ratio of 15:1 and is supplied at 180V when the primary current is…
A:
Q: A 400/230V, 50Hz, single phase transformer has 200 turns on high voltage side. Find turns ratio,…
A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…
Q: A 300 KVA 1-ph transformer is designed to have a resistance of 1.8° efficiency occurs at a load of…
A: According to the question we have to find the efficiency when supplying full load with the help of…
Q: In a transformer , the power in the primary side equals to the power in the secondary side. Select…
A: Transformer is a static device. In a transformer (ignoring any losses), the power available in the…
Q: SUBJECT: Elements of Electrical Machines Design INSTRUCTIONS: - Please write clearly and…
A: Transformer: It is a static device that is used for electrical to electrical power transfer without…
Q: The primary resistance of a 440/110-V transformer is 0.5 Ω and the secondary resistance is 0.04 Ω.…
A: Transformer voltage is given 440/110 V. Turn ratio of transformer will be,
Q: A 50 KVA transformer on full load has copper loss of 600 and iron loss of 500W. Calculate the…
A: Full load KVA is given as, S = 50 KVA Full load copper loss is Pcu=600 W=0.6 KW Iron loss is given,…
Q: Q3- In short circuit test ,the ratio of turns of a 1-phase transformer is 8:1, the resistances of…
A:
Q: 7- The Full load. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i)…
A: In this question we will find loading of transformer for maximum efficiency...
Q: (i) Identify the Fig. 1 below and briefly explain how it works. (ii) State two advantages and two…
A: The explanation is as follows.
Q: 10kva single transformer has turns ratio of 300 / 23.
A: The equation of the transformer is given as
Q: Q1: A step-down transformer that reduces the voltage from (500v) to (400) when the current is…
A: for transformer , input KVA = output KVA V1I1=V2I2 given V1 =primary voltage = 500 volts…
Q: Josses = losses 1. Maximum efficiency of transformer is when 2 At maximum efficiency load current…
A: SOLVE PROB.
Q: a) A 600KVA, single phase transformer when working at unity power efficiency 92% at full load and…
A: Given:600KVA , 92% efficiency at full load and half load under unity power factorsAt full load nFL=…
Q: 44/ The efficiency is maximum in a transformer when no load losses = Iron losses Select one: True…
A: Need to find true false for given Transformer statement
Q: 31. The all-day efficiency of a transformer depends primarily on (a) its copper loss (b) the amount…
A: In this question we need to choose a correct option.
Q: Q25. The function of the iron core in the transformer is O providing insulation for the windings O…
A: Transformers need core as they run on magnetism.
Q: 22. Put (T) for true sentences and (F) for fouls one of all the following sentences and (correct the…
A: "Since you have asked multiple question, we will solve the first four sub-parts for you. to get…
Q: . What are the various causes of voltage drop in atransformer? B. A single phase transformer has…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: The primary resistance of a 440/110-V transformer is 0.5 ohms and the secondary resistance is 0.04…
A: Current: It is the time rate of the change of the charges. It flows from the higher voltage to low…
Q: shows the basic scheme of modern electricity transmission to our homes. Think-ing 1., 2. and 3.…
A:
Q: A transformer with a primary of 1500 turns is used to generate 10V ac from A supply voltage of 120…
A: In the question, A transformer primary turns N1= 1500 turns Secondary voltage Vs= 10V Primary…
Q: A 30KVA, single-phase transformer is tested on both open-circuit and short-circuit conditions,…
A: given single phase transformer
Q: transformer
A: The solution is given below This problem is from transformer. The resistance added in series with…
Q: 19. During short-circuit test, the iron loss of a transformer is negligible because (a) the entire…
A: 18). The main purpose of performing open circuit test is to measure iron losses or core losses.…
Q: Exercise 1: Calculate the voltage in the secondary step-down transformer which has a turns ratio of…
A: Given data, Turns ratio = n = 10:1 Primary voltage V1 = 120 volts Secondary voltage V2 is to be…
Q: 14. During construction of a transformer, the core is cut after being wound to permit the A.…
A: Electrical machines can be either generator , transformers or motors. They can be either Ac machines…
Q: A 2 kVA transformer an iron loss of 150 watts and full load copper loss of 250 watts. The maximum…
A:
Q: A 200/400V, 50Hz, 1-ohm draws a current of 0.7A and power of 70W when rated voltage is applied to…
A: Given transformer with 200/400 v,50 Hz Open circuit test current I0=0.7 Apower P0=70 wRated voltage…
Q: Q2/ Fill in the blanks: 1- The two windings of a transformer is ........ linked. 2- If a transformer…
A: In this question we will write transformer related questions.....
Q: Determine the necessary transformer turn ratio for transferring maximum power to a 160 load from a…
A:
Q: The secondary coil of a transformer has 100 turns and secondary voltage is 10V. If the turns ratio…
A:
Q: 4.14 Given a 3 KVA transformer with an efficiency load and unity power factor and a copper…
A: In this question, We need to determine the iron losses if efficiency of the Transformer is given at…
Q: A transformer has 600 primary turns connected to a 1.5 kV supply. Determine the number of secondary…
A:
Q: 1: 2 100 Ohms 120 V
A:
Q: An ideal transformer has N, =8 and N,=1 and the primary current is 3A when it is supplied at 240V.…
A: With the help of turns ratio of the transformer we can able to calculate the secondary voltage…
Q: Problem 1 The primary resistance of a 440/110-V transformer is 0.5 Q and the secondary resistance is…
A: In this question we will find secondary current for maximum efficiency and efficiency for given…
Q: A 50 kVA 2000/200 V transformer has the resistance referred to secondary is 30 Q. The equivalent…
A: resistance referred to primary = secondary referred resistance ×primary voltagesecondary…
Q: A certain unenergized copper transformer winding has a resistance of 30 Ω at 20 ⁰C. Under rated…
A: Effect of temperature on resistance of conductor : The resistance of conductor are changed when…
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- Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit equivalent circuit shown in part (c) contains an ideal transformer which cannot be accommodated by some computer programs. (a) True (b) False (ii) In the - circuit representation for real c in part (d), the admittance parameters Y11 and Y12 would be unequal. (a) True (b) False (iii) For complex c, can the admittance parameters be synthesized with a passive RLC circuit? (a) Yes (b) NoThe transformer of Problem 3.16 is supplying a rated load of 50 kVA at a rated secondary voltage of 240 V and at 0.8 posr factor lagging. Neglect the transformer exciting current. (a) Determine the input terminal voltage of the transformer on the high-voltage side. (b) Sketch the corresponding phasor diagram. (c) If the transformer is used as a step-down transformer at the load end of a feeder whose impedance is 0.5+j2.0, find the voltage VS and the power factor at the sending end of the feeder.Consider a source of voltage v(t)=102sin(2t)V, with an internal resistance of 1800. A transformer that can be considered as ideal is used to couple a 50 resistive load to the source. (a) Determine the transformer primary-to-secondary turns ratio required to ensure maxi mum power transfer by matching the load and source resistances. (b) Find the average power delivered to the load, assenting maximum power transfer.
- Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source whose voltage is e1(t)=100(1| t |)volts for 1t1ande1(t)=0 for | t |1 second. A2- farad capacitor is connected across winding 2. Sketch e1(t),e2(t),i1(t),andi2(t) versus time t.SUBJECT: Elements of Electrical Machines DesignINSTRUCTIONS: - Please write clearly and understandable way. - Write all the corresponding Given with their corresponding symbols and units. - Draw/Illustrate the diagram/circuit or drawings that is related to the problem, IF POSSIBLE, which is HIGHLY REQUIRED. - Solve in step-by-step, no shortcut - Underline twice the Final Answer.PROBLEM: How does the copper loss vary with the load in a transformer?A 2.4-kVA, 2400/240-V, 50-Hz, step-down transformer has the followingparameters: R, = 1.5 a, X, = 2.5 R, R, = 0.02 a, X, = 0.03 Q, R,, = 6 kR,and X,, = 8 kR. It is operating at 80% of its load at unity power factor.Using the exact equivalent circuit embodying the ideal transformer, determine the efficiency of the transformer. Also sketch its phasor diagram.
- A single-phase distribution transformer has a specified 13.8 KV/ 480 V. When the transformer is excited at nominal voltage on the high voltage side, with the low voltage winding in open circuit, it takes 0.35 A and 1610 W. When the winding low voltage terminal is shorted, and 1000 V is applied to the high voltage terminals, the readings are 66 A and 382 W. Find: a) The values corresponding to the equivalent circuit of the transformer referred to the low voltage side.A 19kVA transformer steps down from 3300V to 240V. The resistance of the primary and the secondary windings are 6 ohms and 0.04 ohms respectively and the reactances are 2.5 times the resistance in each case. Calculate the secondary terminal voltage when the transformer is delivering full load current at unity of.A Transformer with 10:1 ratio and rated at 50-kVA, 2400/240-V, 50-Hz is used to step down the voltage of a distribution system. The low-tension voltage is to be kept constant, if the transformer has: R = 2.2 0, R2 = 0.014 Q, X, = 4.1 0, X2 = 0.03 0, then, a. What load impedance connected to low-tension side will be loading the transformer fully. b. Calculate the equivalent resistance as referred to primary. c. Calculate the equivalent reactance as referred to primary. d. Calculate the equivalent impedance as referred to primary. e. Calculate the total Cu loss.
- The Transformer is a device used to change voltage into the designated desired voltage to fit an application. Transformer also is one of the most important electrical device widely used in today’s everyday life. An ideal transformer is the one worked with 100% efficiency. However, in reality, a transformer may not achieve 100% efficiency. a) Draw a transformer principle element. b) Explain the working principle of a transformer. c) Identify the parameter that remains unchanged whenever the transformer is in operation and explain why it remains unchanged. d) With the help of a sketch, identify where all the losses happen and their type in a transformer. e) What is the difference between modern and old mobile phone charger,In a 100-kVA, 6,000/400-V, Y-Y, 3-ph, 50-Hz transformer, the copper loss is measured at 5000 W during half-load. Apparently, the maximum efficiency also occurs at ¾ full-load, find the efficiencies of the transformer at full-load and at half-load both at 0.8 pfA 120:480-V, 10-kVA step-up two-winding transformer is to be used as an autotransformer to supply a 120-V circuit from a 600-V source (a step-down autotransformer). When it is tested as a two-winding transformer at rated load, unity power factor, its efficiency is 97.9 %. 1.Show the connection diagram of the transformer converted as an autotransformer and identify which is the series winding Nse and the common winding Nc.