68. A transformer has a core loss of 64 W and a copper loss of 144 W when it is running 20% overload. At what load will this transformer operate under maximum efficiency? A. 80% C. 66% B. 120% D. 44%

Q: A 200/100 V, 50 Hz transformer is to be excited at 40 Hz from the 100 V side. For the exciting…

A: Excitation current = E/X

Q: Below is a time current curve (TCC), showing the damage curve of a transformer. Draw (roughly),…

A: TCC- Time Current Curve is a plot shows the overcurrent device's interruption time which is based on…

Q: 4. Define voltage regulation of a transformer? 5. Full load copper loss in a transformer is 1600W.…

A: Since you have posted multiple questions , we will provide the solution only to the first three…

Q: What is current transformer? 2 difference between current and potential transformers.

A: A step-up transformer that lowers the current while raising the voltage is a current transformer.…

Q: transformer

A: If we are giving dc to the transformer it won't work . transformer works on the principle of electro…

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 normal transformer has a nominal 60 kVA. The nominal primary and secondary voltages are 600 V and…

A: Given data : Transformer rating P=60 kVA Primary voltage V1=600 V Secondary voltage V2=120 V

Q: 7. What is the no-load voltage when the full-load secondary voltage is 108 V and transformer…

A: Given: In a transformer, Full load secondary voltage V2fl=108 V. Transformer regulation VR=10%.

Q: explain how the type of loading affects the voltage regulation of a transformer

A: There are two type of loading possible in a transformer they are  1) inductive type loading 2)…

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

A:

Q: type of Transformer in dc machine

A: solve above ques.

Q: The eddy-current loss in a 6.9 kV, 50 Hz transformer is 220 W. What will be the eddy-current loss of…

A:

Q: In a load test on transformer the no load voltage is 240V. The terminal voltage drop is 225V on…

A:

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: Q6. Specification/Range of Power Supply:

A:

Q: For the transformer shown in Figure Q3 (a), Determine the following. i. The turn ratio ii. The…

A: We know the current and voltage ratio for transformer , we will use that ratio to calculate the…

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: 2. What will happen when the secondary of a current transformer is disconnected from its load while…

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

Q: A 200 V/100 V, 50 Hz transformer is to be excited at 40 Hz from 100 V side. For the exciting current…

A: Given, A 200 V/100 V, 50 Hz transformer is to be excited at 40 Hz from 100 V side. The exciting…

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…

A:

Q: Ideal transformer core has permeability equal to Select one a Non-zero finite c. Negative G Intinite

A: Ideal transformer core has permeability equal to

Q: voltage per winding of the 220V/12V, 60 Hz single phase core transformer is 2V. If the maximum flux…

A: We know direct formula of per winding voltage. From that formula we will find out cross section…

Q: A H.W.R. uses 4 : 1 transformer and a diode of internal resistance 100. If load resistance is 5000…

A: Given a half wave rectifier uses, Transformer with turns ratio, Np : Ns= 4 : 1 Internal resistance…

Q: The losses found in a transformer

A: There are two types of losses that occur in the transformer. 1. Core loss 2. Copper loss Apart from…

Q: Which of the following are power losses that can occur in a practical transformer (non-ideal)?…

A:

Q: If I build a transformer and I have the following data: Primary voltage = 127V Number of turns in…

A:

Q: The full-load copper loss of a transformer is 1600 W. At half-load, the copper loss will be O a.…

A: Given, The full load copper loss of a transformer, Pcufl=1600 W At half load, the load factor x=12…

Q: Due to the increase in load, what change you saw in the transformer’s output power and the…

A: Electrical machines can be either generator or motors and transformers. They can be either Ac…

Q: Transformer how it is work

A: Transformers are an electrical instrument created to transform AC from single voltage to other. The…

Q: When secondary is fully loaded, transformer regulation is less than 1 percent. It shows that it is a…

A: This problem is related to the transformer If the secondary is fully loaded, transformer regulation…

Q: A short circuit test performed on a 25 KVA 2300/230 V transformer gives the measured value of the…

A: Given- A short circuit test was performed on 25 kVA 2300/230 V transformers. Transformation ratio,…

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.