1. The equivalent circuit impedances of a single phase 10-KVA, 480/120 V, 60 Hz transformer are to be determined. The open circuit and short circuit test results as performed on the primary side is as follows. Open-circuit test Short-circuit test Voc = 480 V loc = 0.41 A Poc = 38 W Vsc = 10.0 V Isc = 10.6 A Psc = 26 W %3D %3D |3| %3D %3D %3D a) Find the impedances of the approximate transformer equivalent circuit referred to the primary side, and sketch the circuit. b) What are the impedances when referred to the secondary side. Sketch the resulting circuit.

Q: A single phase transformer has turns ratio of 4. The resistance and reactance of the primary winding…

A:

Q: A multitap transformer has 100 turns on the primary, 100 turns between B and C, 1000 turns between A…

A:

Q: Find the elements of the equivalent circuit relative to the secondary of a single-phase transformer.…

A: Transformer is the static device it work on the principle of faraday law of mutual inductance. It…

Q: Ideal transformer with primary of 200 turns and secondary of 100 turns. The primary is connected to…

A: secondary voltage = primary voltage×secondary turnsprimary turns. current in load = power delivered…

Q: 6. A single-phase, 225-kVA, 460/120-V transformer has 6% impedance and 96% efficiency. Find its…

A: In this question we need to find series R and X of the given transformer

Q: 1. A 2.4-kVA, 2400/240-V, 50-Hz, the step-down transformer has the following parameters: : RH =…

A: Rated kVA is  kVA.Induced EMF ratio is  V.The high voltage to low voltage winding turns ratio is…

Q: The circuit diagram of a wye wye transformer is shown below. It has a neutral to ground resistor in…

A: A wye-wye transformer, also known as a star-star transformer, is a type of three-phase transformer…

Q: A single phase 500/200 V ,55HZ transformer has an efficiency of 98% at full-load. Determine the…

A: Given input frequency = 55 Hz and no load terminal voltage = 200 volts full load terminal voltage =…

Q: A transformer has 700 primary turns and 150secondary turns. The primary and secondary resistances…

A: Given, Transformer has, Primary turns, N1= 700 Secondary turns, N2= 150 Primary Resistance, R1= 0.4…

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

A:

Q: The three-phase ratings of a three-winding transformer are: Primary Y-connected, 66 kV, 24 MVA…

A:

Q: he ratings of a single-phase three-winding transformer are as follows: *primary winding: 300 MVA,…

A: Base MVA=300 MVARated primary side voltage=14 kV→terminal 1Rated secondary winding voltage= 200…

Q: A 400/200 volts transformer has pu impedance of 0.05. The HV side voltage required to circulate full…

A: Turns ratio 400/200  i.e. Base voltage for HV, VHV(base)= 400 V Base voltage for LV, VLV(base) = 200…

Q: Three single phase transformers are connected in a Delta-Wye configuration.  Each transformer is…

A:

Q: The core loss of a single phase, 230/115 V, 50Hz power transformer is measured from 230 V side by…

A: Given- 230/115 V, 50 Hz power transformer, Core loss=1050 W, for 230 V, 50 Hz input, Core loss=500…

Q: 3.16 A single-phase, 50-k VA, 2400/240-V, 60-Hz distribution transformer has the following…

A: It is given that:

Q: The table below shows some performance parameters of a certain power transformer. Full-load voltage…

A: In this question we need to find a voltage regulation for the given condition.

Q: Detailed conclusions we can come up with after conducting open circuit test on single phase…

A: According to the question we have to, Detailed conclusions we can come up with after conducting an…

Q: A 15-KVA, 2400/240-V transformer is to be tested to determine its excitation branch components, its…

A: The rated KVA of the transformer, S=15 KVA The voltage ratio, 2400/240 V, Results of open circuit…

Q: A single-phase transformer has a voltage ratio on open circuit of 7900/660 V. The primary and…

A: Transformer: It is a static device that is used to step up and step down the voltages.

Q: The resistance and reactance of the primary winding of a 440/110 V single phase transformer are 4.4…

A:

Q: For the transformer below determine the magnitude for the induced secondary voltage if: Ep = 1kV Np…

A:

Q: A single phase transformer is rat 2,424 V / 206 V. 60 Hz The eau

A:

Q: The transformation ratio for the below transformer is 5:1. Assume 240Vrms is applied to the…

A:

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: A transformer with a 10/1 turns ratio has a maximum flux density of 60,000 lines/in2, when the…

A: EMF E = 4.44×frequency×Flux in the core×per phase turns. But flux = flux density× area of the core.…

Q: A transformer has 600 primary turns and 300secondary turns. The primary and secondary resistances…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Maximum efficiency of a single phase transformer occurs at 80 percent of full load. What is the…

A: Given that maximum efficiency of single phase transformer occurs at 80 percent of full load.…

Q: A voltage transformer in Figure 8 has 1,500 turns of wire on its primary winding and 500 turns of…

A: The number of turns on the primary side, The number of turns on the secondary side, The voltage…

Q: What is the relationship between primary induced emf( E1) and applied voltage (V1) of a Transformer?…

A: The relationship between primary induced emf( E1) and applied voltage (V1)

Q: a)The voltage per winding of 220V/12V, 60 Hz single phase core transformer is 1V. If the maximum…

A: The solution can be achieved as follows.

Q: 150 kVA, 2800-240 V, 50 Hz transformer. Regis = 0.0082N , Xeq.Ls = 0.0223N Step down transformer…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Draw the scheme of a single-phase transformer with two secondary windings and mark the main symbols…

A: Transformer: A transformer is a electrical equipment whose main purpose is to transfer electrical…

Q: A transformer core is laminated in order to .

A:

Q: Find the elements of the equivalent circuit relative to the secondary of a single-phase transformer.…

A: It is given that: No-load primary voltage=V1=200 VNo-load secondary voltage=V2=400 VFrequency=f=50…

Distribution System

The final stage in the delivery of the electric power is the electric power distribution system. From the transmission system to the individual customers it carries electricity. The distribution system is connected with the transmission system and is used to lower the voltage of the transmission to medium voltage in the range of 2 kV to 35 kV with the help of transformers. This medium voltage to the distribution transformers located near the customer's premises is carried by the primary distribution system lines. These distribution transformers in turn lower the voltage to utilization voltage used in lightings, household appliances, industrial equipments etc. Through secondary distribution lines often several customers are supplied from one transformer. It is through service drops, the commercial and residential customers are connected to the secondary distribution system lines. Customers who demand a larger amount of power can be connected directly to the primary distribution system level or the sub-transmission level.