The three-phase ratings of a three-winding transformer are: Primary Y-connected, 66 kV, 24 MVA Y-connected, 13.2 kV, 12 MVA Secondary Tertiary A-connected, 2.3 kV, 4 MVA Neglecting resistance, the leakage impedances are: Zps = 6% on 24 MVA, 66 kV base Znt 8% on 24 MVA, 66 kV base "pt = Zst = 7% on 12 MVA, 13.2 kV base Find the per-unit impedances of the per-phase equivalent circuit for a base of 24 MVA, 66 kV in the primary circuit. {Ans: j 0.0; j 0.06; j 0.08}

Q: The shunt branches of are neglected to draw the reactance diagram. Static Loads Transformer O…

A: The explanation is as follows.

Q: A 209 V / 125 V single-phase transformer has a core loss of 120 W and the no-load current is 0.7 A.…

A: We need to calculate power factor .we will use given data to calculate power factor

Q: A 215 V/ 123 V single-phase transformer has a core loss of 120 W and the no-load current is 0.7 A.…

A: Given- A 215 V/123 V single-phase transformer has, Core loss, Wo=120 W Primary side voltage, V1=215…

Q: A small filament transformer has a laminated sheet steel core whose average path length is 20cm and…

A: Given Average path lenght = 20 cm Cross sectional area = 5 cm2 Primary winding connection 120 V and…

Q: A transformer has a rated output of 300 kVA at a power factor of 1.2. Determine the rated power…

A: Please comment if you need any clarification. If you find my answer useful please put thumbs up.…

Q: The number of turns on the primary and secondary windings of a 1-p transformer are 350 and 42…

A: Given : A single phase transformer having number of turns on the primary and secondary winding are…

Q: If the core loss of single phase transformer at full load is 294 W, then the core loss at 50% of…

A: In this question we need to find a core loss of a transformer  at 50% load

Q: Consider a single phase transformer with primary and secondary turns of 1000 and 200 respectively…

A: Given:R1=10.5ΩR2=2.5ΩX1=12.5ΩX2=2.5ΩRm=15.55KΩXm=10KΩK=1000200=5

Q: The apparent power in primary and secondary side of the distribution transformer remains the same at…

A: Given  Apparent power is same in both primary  and secondary  of transformers  Ture or false

Q: mer has primary and 80 turns on the secondary. The primary 2. A 100 KVA transf and secondary…

A: Given data, The rating is 100kVA. Primary resistance  = 0.3Ω Secondary resistance  = 0.1Ω Primary…

Q: Mutually induced emf is induced in secondary of the transformer by Flemings right hand rule Select…

A: Here No need of given data

Q: In a Delta-Delta transformer connection, how many wires are recommended for both primary and…

A: The objective of the question is to determine the number of wires recommended for both primary and…

Q: 4. The load cycle of a three-phase 100 kVA, 11/0.4 kV, 50HZ transformer for one day is given in the…

A: Lp

Q: the cross over frequency of the system with transformer function k[s+1]/s2 and phase margin equal to…

A: In this question,  We need to calculate the the cross over frequency of the system with transformer…

Q: 05 V/ 129 V single-phase transformer has a core loss of 124 W and the no-load current is 0.8 A. The…

A:

Q: If the core loss of single phase transformer at full load is 284 W, then the core loss at 25% of…

A: Core losses at full load = 284W. Find the core losses at 25% load?

Q: If the core loss of single phase transformer at full load is 316 W, then the core loss at 50% of…

A: If the core losses of single phase transform at full load = 316W Find the losses at 50% load?

Q: In a 1-phase transformer, if the no load secondary terminal voltage is 222 V and the full load…

A: Given that Vnl=222VVfl=209V

Q: In a single phase transformer, when no-load voltage is 230V and full load terminal voltage is 220,…

A:

Q: In short circuit of single phase transformer input power is equal to

A: Short circuit test usually conducted on H.V side and L.V side is short circuited.

Q: QUESTION 12 A single phase 600v/120v transformer has a load of 30 ohms resistive and 20 ohms…

A:

Q: Write ‘T’ for True and ‘F’ for False The phase shift angle of a Δ-Y transformer can only be 30⁰

A: In this question we will find phase shift between delta star transformer..

Q: Solve it quickly please

A: From the above problem we have given  Hence symmetrical component of voltage is given as

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: A 3-phase transformer is assembled by connecting three 720 -VA, 360/120 V single phase transformers…

A: A 3-phase, Y−Δ connected transformer is assembled by connecting three 720 VA, 360/120 V single-phase…

Q: the core loss of single phase transformer at full O 52W O 105W O 13W O 210W

A: In transformer, mainly two losses present namely core and copper losses.

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

A:

Q: Two transformers are to be operated in parallel such that they share load in proportion to their KVA…

A: Given, Two transformers are to be operated in parallel such that Load ∝ kVA rating The rating of the…

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

A: Wye-Wye configuration  Transformer rated 25kv/62kv Load = 640 KVA Supply = 25Kv (L-N)

Q: A transformer has equivalent resistance referred to secondary R₁2 and reactance referred to…

A: Given, A transformer has, Equivalent resistance referred to secondary = R02 Equivalent reactance…

Q: The apparent power in primary and secondary side of the distribution transformer remains the same at…

A:

Q: If the core loss of single phase transformer at full load is 124 W, then the core loss at 50% of…

A: Given Data: Core loss = 124 V percentage loading x = 50%

Q: if the core loss of 1 phase transformer at full load is 124 W, then the core loss at 50% of load is…

A: The core loss of 1 phase transformer at full load is 124 W  P = 124 W    Note :  Since the core…

Q: In Scott T transformer, the two equal single phase outputs are in same phase. Select one: O True O…

A: In this question we will write about scott connection output phase...

Q: Problem: The rating of three phases of a 3 winding transformer are: Primary Y-connected: 15MVA,66KV…

A: Consider the base values are given as: 30 MVA, 70 kV Since the base voltage for the primary winding…

Q: 100 kVA, 6800-240 V, 50 Hz single phase step down transformer h RLs=0.0082 RHs=2.62 Rfe-HS=50002…

A:

Q: A single phase 9.6 kVA, 500 V / 1.5 kV transformer has an impedance of 1.302 Ω with respect to…

A: GivenKVA of the transformer =9.6 KVA=0.0096 MVAPrimary side voltage=500 v=0.5 Kvsecondary side…

Q: If the core loss of single phase transformer at full load is 318 w, then the core loss at 50% of…

A: Core losses are eddy current losses and hysteresis loss  Given full load core loss as 318W  When the…

Q: transformer 1200 KVA, 11000/2200 V, 50 Hz." akage reactance/phase of the primary winding are…

A:

Q: In a single phase transformer core losses can be found by open circuit test Select one: O True O…

A: In this question , we will find which test is for core losses...

Q: If the core loss of single phase transformer at full load is 39 W, then the core loss at 25% of load…

A: Need to find the core loss of Transformer at 25% of the load

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.