500 kva, 11,000/2300 volts 60Hz transformer has 5.45% impedance and 1.2% resistance. What is the percent regulation at full load 80% power factor lagging?"     A. 3.26     B. 6.23     C. 4.21     D. 5.28

Q: 1. If a 0.6 accuracy class current transformer has a phase angle of + 10 at 100% rated current, the…

A: Ans.(1). Value of 'β=10'

Q: A 3-phase 100OKVA, 11000/416 transformer is delta-connected on the primary and star connected on the…

A: Given that  3-phsee , 11000V/416V , delta connected Xmer   S3ϕ=1000 KVAr1=1.45 ohmr2=0.0006…

Q: Ql-phase step down transformer 1250 KVA, 110002200 V, 50 Hz. The resistance iphase and leakage…

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Q: For an AC transformer, higher is the secondary leakage 1.higher is the secondary induced e.m.f…

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Q: Q5:Choose the correct answer from the given alternatives (answer five only) 1.In an ideal…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: A 50 Hz, Scott connected transformer supplies an unbalanced two phase load at ( 400 V) per phase.…

A: Scott connection is used to convert a balanced three-phase into balance 2 phases or vice versa. it…

Q: How to generate 480V three phase 400Hz ac from 230V three phase 60Hz ac source? (Please specify the…

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Q: Draw the phasor diagrams for the following 3-phase components: 1-Transformer: exact equivalent…

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Q: Analysis of an Ideal Transformer Circuit The turns ratio of the step-up transformer in Figure 2 is…

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Q: The magnetization current of transformer depends on: Select one:

A: The magnetization currrent of transformer depends on

Q: In the system shown in Figure 1, the transformers are connected star-star with both star points…

A: It is given that: MVAbase=15XT1=XT2=XT3=0.04 pu

Q: Q.3. Why is the transformer core laminated?

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Q: Consider the circuit in the figure below: a) What are the benefites of using the transformer in this…

A: Cut in voltage of silicon diode is 0.7V and cut in voltage of germanium diode is 0.3V. During…

Q: At the end of a one-phase supply line with a series impedance of 1+j2 ohms, a 50 kVA, 2400/240 volt,…

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Q: The values ​​of a phase measured from the no-load (no load) operation and short circuit test of a…

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Q: dabull (CME 446) 1 If F3=0.1 and Z3=45 Q, then the impedance of the next stage in the multi-section…

A: Given: Γ3=0.1Z3=45 Ω

Q: Ql-phase step down transformer 1250 KVA, 1 1000/2200 V, 50 Hz .The resistance /phase and leakage…

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Q: equivalent winding (a) resistance,(b) reactance and (c) impedance referred to the high voltage side.

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Q: current flowing in the of a transformer creates an alternating which establishes an alternating flux…

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Q: A 3-phase transformer, ratio 33/6.6-kV, A/Y, 1-MVA has a primary resistance of 8.5 ohms per phase…

A: 3 phase,E1=33kv,E2=6.6kv,Rating of transformer=1MVA,Primary resistance=8.5ohms,Secondary…

Q: 7. The primary and secondary induced e.m.fs. El and E2 in a two-winding transformer are…

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Q: SKVA, 50Hz, single phase transformer, the primary voltage of the transformer is 110V. Reqand X is…

A: Given data, Voltage (Vp)=220 VResistance(Req)=026ΩImpedance(Xeq)=0.4ΩVoltage…

Q: Calculate the value of the impedance seen by the source if the step-down transformer turns ratio a;…

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Q: THE PERCENTAGE RESISTANCE AND REACTANCE OFA1-F TRANSFORMER ON LOAD ARE 3% AND 6 %…

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Q: Ql-phase step down transformer 1250 KVA, 1 1000/2200 V, 50 Hz .The resistance /phase and leakage…

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Q: A 50 Hz, Scott connected transformer supplies an unbalanced two phase load at ( 400 V) per phase.…

A: Scott connection is used to convert a balanced three-phase into balance 2 phases or vice versa. It…

Q: Single phase 10 kVA, 480 V / 120 V to feed a 120 V load from a 600 V source conventional transformer…

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Q: Two transformers A and B of different ratings but equal voltage ratios share a load of 900 kVA at…

A: Load  SL = 900 KVA   0.8 pf lagging transformer  A  rating is  600 KVA transformer  B  rating is…

Q: 6. 150 kVA, 2800-240 V, 50 Hz transformer. Reg.Ls = 0.0082N , Xeq.Ls = 0.02230 Step down transformer…

A: Note: We are authorized to answer three subparts at a time since you have not mentioned which part…

Q: Q- Electrical machines A single-phase 100 kVA, 1000 V/100 V, 50 Hz transformer has a voltage drop of…

A: Given- Single-phase 100 kVA, 1000 V/100 V, 50 Hz transformer. Voltage drop across series impedance…

Q: A short transmission line connects a step-up transformer on the source side with a series impedance…

A: To find the real power absorbed by the load, we first need to determine the voltage and current at…

Q: The EMF equation of transformer referring to primary turns is Select one: O a. 4.440 N.B O b.4.440…

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Q: A voltage multiplier has 12 stages Capacitances, all equal to 0.08 μF. The supply transformer…

A: Given:No. of stages=12C=0.08 μFf=100 HzVm=150 kVIL=0.006 A

Q: A three-phase two winding transformer is rated 1200MVA, 24/345kV 50Hz. It has a leakage reactance of…

A: PU Kva = Actual KVA / Base KVA PU Voltage = Actual Voltage/ Base voltage  In star connection,  N1/N2…

Q: In a single-phase transformer induced electromotive force per turn on secondary winding is Select…

A: Let E2 be the induced electro magnetic force in secondary winding and N2  be the number of turns in…

Q: Two transformers A and B are connected in parallel to a load of (2+j1.5) ohms. Their impedances in…

A: Given,ZL = 2+j1.5  ΩZA=0.15+j0.5 ΩZB=0.1+j0.6 ΩEA=207 VEB =205 V

Q: N1: N2 In-1A Vac 60 Hz Ver Center tapped 5000uF D2 Output Waveform: Vpp Voc 12V

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Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.