Calculate the kVA output of a single phase transformer from the following data. Core height Distance between core centre (D) Diameter or circumscribing circle (d) Distance between core centre (D) Net iron area (A₁) π Area of circumscribing circle d² = 2.8 Distance between core centre D = 0.56 = 0.7 Window space factor Kw Frequency f 50 Hz Core flux density Bm = 1.2 Wb/m² = 0.27. - = 40 cm = 400 mm

Q: What is the material commonly used for construction of transformer core? Draw the B- H curve for…

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Q: A 800/170V, 50 HZ, 1-phase transformer with cross sectional area of the core is 24 cm? and maximum…

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Q: Whether a transformer shifts an ac waveform by 0° or 180° depends on the phasing of the waveform…

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Q: A 900/150V, 50 HZ, 1-phase transformer with cross sectional area of the core is 28 cm? and maximum…

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Q: what are the factors affecting the dielectric strength of transformer

A: Mineral oil used as oil in transformer provides high insulating properties. It also provides cooling…

Q: The working principle of transformer is - 1) Self - induction 2) Mutual induction 3) Electromagnetic…

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Q: What are components of transformer

A: Solution: A transformer is a device ,which uses electro magnetic induction to transfer  energy from…

Q: In no load phasor diagram of practical transformer, the magnetizing current is with flux 4. In phase…

A: In the question,  In the no  load phasor diagram of practical transformer, the magnetizing current…

Q: A 800/160V, 55 HZ, 1-phase transformer with cross sectional area of the core is 26 cm? and maximum…

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Q: Β1 Using KVL, find the currents through R₁ and R3 in the circuit shown below. b) R₁ R3 ww 1Ω 4Ω B₁ 2…

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Q: In transformer, loss that is related to ohmic resistance of winding is

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Q: Draw the construction diagram of the core type transformer

A: In core type transformer both the primary and the secondary windings are placed on the side limbs…

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

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Q: Open circuit test on transformers is conducted to determine O Eddy current losses O Copper losses O…

A: Electrical machines can be either DC or AC machines. Transformer is an AC machines with no rotating…

Q: In transformer, the eddy current loss can be minimized by using thin size copper conductors using…

A: Transformer have 2 types losses  In the question the eddy current losses can be minimised by???

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: In transformer, the eddy current loss depends on both frequency and flux density load current only…

A: The circulating current produced in the body of the magnetic material when it is subjected to an…

Q: What is the leakage flux in a transformer ? How can the leakage flux be minimized ?

A: We need to define the leakage flux and how can we reduce or minimise the leakage flux.

Q: In no load Phasor diagram of practical transformer, the core loss current Ic is with primary voltage…

A: When a transformer is on no-load, the secondary is open circuited. Hence secondary current is zero.…

Q: of the core is 30 cm² and maximum flux density is 1.3 Wb/m² , then the number of turns in primary…

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Q: In medium transformers, the total iron losses may vary from. rated output. % of the 0.4 to 1 O 0.2…

A: The iron loss of the transformer is defined as the sum of the hysteresis current loss, eddy current…

Q: The resistances of potential transformer winding is minimized by using a thick conductors and small…

A: Answer:a  thick conductors and small length of turns

Q: The iron core in a transformer has the purpose of O decreasing the reluctance of the magnetic path…

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Q: If the core loss of single phase transformer at full load is 98 W, then the core loss at 25% of load…

A: In the transformer core losses independent of load.   We can also say in the transformer core losses…

Q: A transformer has equivalent resistance referred to secondary R02 and reactance referred to…

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Q: the various curl and divergence vector operations you 24. (a) Define and give expressions for…

A: According to the question,(a) We need to define and give expression for wavelength, phase factor,…

Q: transformer the core loss is 100 watt at 40 Hz and 72 watt at 37 Hz, then eddy current and…

A: In this question , we have to find out Eddy current losses and hysteresis losses...

Q: TRUE or FALSE: If a transformer is loaded from full-load value to half-load value, then the amount…

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Q: 4) I (2 A) – N = 60 turns N = 30 turns %3D •d Area (throughout) = 0.15 × 10-3 m² labcda = 0.16 m %3D…

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Q: A transformer core is laminated in order to .

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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.