) Determine the all-day efficiency of a 50 kVA distribution transformer having a full load efficiency of 94% and the full load copper loss is just equal to the constant iron loss. The loading is as per the following schedule at unity power factor: no load for 10 hrs, 25% of full load for 6 hrs, half load for 5 hrs and full load for 3 hrs Subject: Electrical Apparatus and Divices

Q: A short circuit test on 10kva / 2400, 60 hz transformer yields the following result: 4.17 A, 200 V…

A: The solution is given below

Q: 2 A 1000 kVA 11 kV/400 V ONAF cooled transformer works on a cycle of 3 hours heavy load and 21 hours…

A: Given that the peak load is 140% and can only be maintained for 0.5 hours per hour of time constant,…

Q: A single-phase transformer is required to step down the voltage from 1100 V to 230 V at 50 Hz. The…

A:

Q: Based on Table Q1 (b), there are experiment for determine the breakdown strength of transformer oil.…

A: based on the observation readings, Breakdown voltage appears to be 50Kv/2mm=25Kv/mm Breakdown…

Q: 2- A 100 kVA,3-phase, 50 Hz, 6,600/400 V transformer is A-connected on HV side andY-connected on LV…

A: Transformer is a static electrical device which transfers power from one circuit to another circuit…

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

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

Q: 1. What is the difference between power transformer and distribution transformer in core losses and…

A: Power transformers are generally high voltage transformers which are used stepping up and down of…

Q: Certain transformer has full-load copper losses of 500 W. What is value of copper loss at half load:…

A: Given data: Pc1=500 W

Q: (a) find the eddy current frequency of 50Hz (b) find the hysteresis loss in watt at a frequency of…

A:

Q: -V 50-Hz distribution transformer is tested for efficiency and regulation as follows OC. test( Low…

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

Q: B3. A 408 kVA single phase transformer has an efficiency of 96%, when delivering full load at 0.8…

A: Transformer 408KVA  Single phase transformer, efficiency 96% at power factor 0.8  at full load…

Q: A 3-phase 10OOKVA, 11000/416 transformer is delta-connected on the primary and star connected on the…

A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…

Q: In a 15KVA, 2000/ 200 V power transformer, the iron and full load copper losses are 375W and 410W…

A: Dear,as per company guidelines we can answer only one question at a time, kindly post other…

Q: A 4500 V / 360 V, 50Hz single-phase transformer is to have an approximate e.m.f. per turn of 25 V…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: (1) (iii) Write the expressions of the line-to-neutral voltages Vas, Von Ven and then determine the…

A: In the given question to solve the current for part b primary side, line and phase currents are…

Q: 2- A 100 kVA,3-phase, 50 Hz, 6,600/400 V transformer is A -connected on HV side and Y- connected on…

A:

Q: A 11000/440 V, 50 Hz single phase transformer has a maximum flux density of 1.1weber/m². If the…

A:

Q: For problem 1-3, consider Figure 1. 2:1 120 Vrms ooooo rellle D. 84.9 V 2. The dc voltage at the…

A: We need to analyse the given half wave rectifier circuit

Q: B3. A 418 kVA single phase transformer has an efficiency of 97.8%, when delivering full load at 0.85…

A: Solve as below

Q: A 50 kVA transformar has a core loss of 500 W and full load core loss of 900 W. The load at which…

A:

Q: For this problem, each transformer is a single-phase ideal transformer with turns ratio N1:N2 =…

A:

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: 32. Solve for following if the 3-phase transformer configuration in Figure 6 on Worksheet 3 has the…

A: Assuming high voltage is connected to left windings. on primary side consisting of two coils in…

Q: Compute the e.m.f. induced in the transformer, if the turns ratio is 100 turns/ 25 turns and a flux…

A: In this we will find emf induced in transformer...

Q: Can efficiency be determined for a single phase transformer under open circuit test ?and if so…

A: Open circuit test on transformer: Open circuit test on a transformer is done to determine the no…

Q: Given this transformer with load, what is the expected phase of the primary and secondary voltage?…

A: The solution is provided in the following section.

Q: Complete the blank The copper loss of a transformer at 4/5 of the full load is 4000 W,  full load…

A:

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: In single phase transformer, if the primary turns N1 is greater than the secondary turns N2, then…

A: N1>N2 Then V1>V2 C option are correct

Q: What is phase angle of voltage induced in primary and secondary windings of transformers due to…

A: In this question we need to choose a correct option.

Q: Which of the following loss is the main reason for not using the solid transformer core? O…

A:

Q: What is the DC gain of the given circuit above?

A: The transfer function from the solution is, Asked to find the D.C. gain of the circuit.

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…

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.