Power losses in a transmission line can be decreased by stepping up the voltage using transformer. Select one: True False
Q: During short-circuit test of a transformer, the core loss of a transformer is negligible. Select…
A: Need to find true false
Q: b) A transformer with a primary impedance of 1.2 KQ and a secondary circuit of impedance 100 KO.…
A:
Q: A single-phase transformer rated 75kVA, 8000/240V is given the short circuit test. With the…
A: Rated current in primary side =75*1038000=9.375 amp Short circuit test is done with secondary side…
Q: True or False? There are fewer number of turns in Y-Y transformer required than in delta-delta…
A:
Q: a) What is the minimum required transformer rating in kVA? b) By what percentage could the required…
A: It is given that:
Q: A 250 MVA, 11/400 kV 3-phase power transformer has a leakage reactance of 0.05 pu on the base of 250…
A: Given values are - Rating=250MVAVLVH=11400Xpu=0.05
Q: The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 79.1% for a load with unit…
A: Given: For a 20 kVA, 15.4/0.4 kV, 3-phase star-delta transformer, Relative idle or no-load %I0=30,…
Q: A12 Efficiency of DC machine is high as compared to the transformer. (TRUE/FALSE)
A: In all electrical machines transformer will have higher efficiency. Because there are no rotational…
Q: A 20-ohm resistance is connected across the secondary winding of a single-phase power transformer…
A: Given:-Secondary voltage,V2=150vResistance is connected across secondary winding,∴R2=20ΩSupply…
Q: The point of common coupling always located at the secondary side of the service transformer. True…
A: Service transformer : A transformer that steps down utility-supplied voltages to voltages that used…
Q: When a 100-kVA single-phase transformer was tested in this way, the following data were obtained: On…
A: In this question we need to find efficiency of transformer for given loading conditions.
Q: Using various types of transformers, give 10 impacts to the end-users per type of transformer in…
A: In this solution physical features, advantages and applications of Autotransformer, Power…
Q: A single-phase transformer that has 8000 turns in its primary winding is powered by a voltage of 160…
A: In this question we need to find a secondary voltage of Transformer
Q: What is the nominal transformation ratio of a three-phase Dyn7 transformer consisting of a bank of…
A:
Q: It is possible to connect A-Y transformer in parallel with another A-Y transformer? True O False
A: Is it possible to connect delta star transformer with another delta star transformer in parallel
Q: Impedance of single phase., two winding transformer referred to primary side is 0.1 + j0.6 p.u. The…
A: Given values are - S=1kVAZPP.U=0.1+j0.6V1V2=200400
Q: 4.6 A 60 Hz, 75 kVA, 2400/240 V, single-phase transformer is used to step down the voltage of a…
A:
Q: Explain 3-phase auto transformer with necessary diagram. Also write the applications.
A: Three phase Auto transformer: Circuit diagram:
Q: Example 33.3. A 3-phase, 6,600/415-V, 2,000-kVA transformer has a per unit resistance of 0.02 and a…
A: Given data, Load KVA = 200 kVA Per unit resistance, Rpu=0.02 Per unit reactance Xpu=0.1 Power…
Q: а) Two three-phase transformers have the following per unit secondary equivalent circuit parameters…
A:
Q: During short-circuit test of a transformer, the core loss of a transformer is negligible. Select…
A: The purpose of Short circuit test is to find total resistance and reactance of transformer. It used…
Q: The burden of current transformer is specified as the ratio of primary to secondary turns of the…
A:
Q: Based on the following power system, both transformers are equipped with tap changing facilities…
A: In the given power system, it is given: The impedance of the line and transformers at 132 kV:-…
Q: During short-circuit test of a transformer, the core loss of a transformer is negligible. Select…
A: In this answer we will discuss whether the core loss of a transformer is less / not when conducting…
Q: A 3-phase, A-Y transformer with rating 100 kVA, 11 kV/400 V has its primary and secondary leakage…
A:
Q: Explain the importance of transformer and basic insulation level in the distribution system. Justify…
A: The Basic Insulation Level (BIL) of a transformer is a method of expressing the voltage surge the…
Q: An ideal transformer can be used as impedance transformer. Select one :- True. False
A: We need to tell about given statement
Q: Determine the characteristic impedance for a quarter-wave transformer that is used to match a…
A:
Q: The transformer shown operates at 50Hz with the turn numbers N1=200 and N2=100 for primary and…
A:
Q: For the 11000/400V, AY 3-ph transformer, if the line current in the secondary is 500A calculate the…
A:
Q: Determine the efficiency of three-phase 400 kVA, 11kV/ 380 V transformer at over-loading condition…
A:
Q: The burden of current transformer is specified as the ratio of primary to secondary turns of the…
A: Need to find true false
Q: Electrical transformer can transformer DC voltages and current Group of answer choices True False
A: In this question , choose the correct options Check the given Statment is true or false. Electrical…
Q: In a 25-kVA, 2000/200 V, single-phase transformer, the iron and full-load copper losses are 350 and…
A:
Q: 2. (a) For the following 3-phase transformer, the primary side is given as Y-connection. Draw the…
A: Given primary side of transformer,
Q: For a transformer oil system, if the insulation through which oil flows has a lower thickness,…
A: Transformer oil (otherwise called protecting oil) is an uncommon kind of oil which has magnificent…
Q: short circuit test of a single phase transformer, the ammeter gives us rated current. Select one:…
A: We need to tell about the given statement is true or false
Q: TRUE or FALSE: If a transformer operates at maximum efficiency, then the power factor is at unity
A: condition for maximum efficiency is copper losses are made equal to iron losses . and maximum…
Q: For a transformer oil system, if the insulation through which oil flows has a higher thickness,…
A: Transformer oil is an uncommon kind of oil which has magnificent electrical protecting properties…
Q: 02/A/ What are the conditions for satisfying parallel operation of single phase transformer? Deduce…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: An Auto-transformer is a type of circuit used to derive two-phase power from a three- phase source…
A: The function of auto transformer is similar to a 2 winding transformer with difference is that they…
Q: 4. Calculate the full-load primary and secondary currents of a 5-kva 2,400/120-volt transformer.
A: Given power S = 5KVA Primary voltage PV = 2400 Full load primary current = S/PV = 5000/2400 =…
Q: A single-phase transformer, rated at 25 kVA, 2200 / 60
A:
Q: 2. The impedance referred to the high side of a 50 kVA, 2400/240 V single-phase transformer is 5.76…
A: Given: For a single phase transformer, S=50 kVAV1V2=2400240Z1e=5.76 Ω
Q: A single-phase transformer is rated at 2 kVA, 240/120 V. The transformer is fully loaded by an…
A: The rating of the transformer is given as:
Q: An ideal transformer can be used as impedance transformer. Select one :- True. False. Please…
A: Yes, the ideal transformer can be used as an impedance transformer and the reason behind this is…
Q: Draw a complete circuit diagram for a transformer with definition.
A: According to the question we have to draw a complete circuit diagram for a transformer with a…
Q: As an Engineer you have been contracted by a power distribution company to investigate the causes of…
A: When the load on the transformer is increased than its maximum capability then it is called…
Q: A 37.5 kVA, 2300/230 v single-phase transformer has an equivalent impedance of referred to the high…
A:
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- Combination circuit what is PT? RT? IT? Voltage Across each load?2. When a large shunt capacitor is suddenly connected in parallel with the load bus in the distribution feeder, what would happen to this bus current? O A. Increase B. Decrease D. None of AboveWhich termination would result to a phase change of 180 degrees at the load if Zo = 100 ohm? a. 50 ohm b. short circuit c. 75 ohm d. all of these What is the purpose of impedance matching? a. maximum return loss b. maximum SWR c. maximum load power d. maximum reflection A short piece of transmission line that may be open or shorted and used for impedance matching purposes. a. converter b. decoder c. stub d. transformer
- 1.9II Q.32: For the equivalent circuit of lossless linear transformer shown, find the value of L. Lz, M & k? reee (Ans.: L,=10H, L2=0.1H, M-0.9H & k=0.9) Vi 8.1II lideal reelDefine percentage line and load regulationWhich of the following Surge Diverter use non-linear resistances in its fabrication? Rod - Gape SD. Lightning Arrester SD. Expulsion Tube SD. O All of the above.
- Write in Briefly about circuit breaker, current transformer and voltage transformerIf the core of LVDT is at the middle, then the output voltage will be a. maximum b. minimum c. Output voltage is no relation with core position d. 0Draw the circuit diagram of Two quadrant chopper which is having average load voltage might be positive or negative. Explain each quadrant operation with neat sketch. I want more than 350 words and I do not want it in handwriting