) 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: 6. The figure below shows a single-line-diagram of part of a power system. For each transformer in…

A: For a power system, The single line diagram is shown 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: 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: During short-circuit test, iron losses are negligible because the voltage applied on primary side is…

A: let us arrive at the right answers in each case by analyzing the given statement as shown below.

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

A:

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

A:

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 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: Three-phase, 50 Hz 34500/10500 T/S ​​connected transformer single-phase visible on the side of the…

A: There is confusion in the transformer connection T/S it would be D/S that is delta-star. Hence,…

Q: The open-circuit voltage of 246 V and the full load secondary voltage of 230 V, then the %…

A: In this question we will find percent voltage regulation of transformer....

Q: A) In any transformer's core, we have two types of losses, what are they? B) Explain why the core…

A: A) In any transformer core there are 2 types of core losses. They are     1) Hysteresis Loss.     2)…

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

A:

Q: In a single phase transformer, there are 250 turns in the primary winding. When 220 V is applied to…

A: Given: In a single phase transformer, Number of turns in the primary winding, N1 = 250, Voltage…

Q: How do i calculate secondary current in transformer analysis

A: Given that  calculate secondary current in transformer analysis

Q: Am 11 KV /33 KV 220 MVA, 60 Hz transformer is wooded at sy. with resistive to ad Ratio 21 KW at…

A: In this question we need to find a copper loss at 50% and 75% loading

Q: The primary of a 500/5 A, 5 VA, CT Carries 200A and secondary carries 2.5 A. The ratio error of the…

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: TRUE or FALSE: Since the load is varying in a 24-hour period, the iron loss in a transformer will…

A:

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 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: In load test on single phase transformer, the secondary voltage decreases with increase in load.…

A: In the load test of the single phase transformer.  This is based on the true false.  Secondary…

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

A: It is given that: V1=1100 VV2=230 Vf=50 Hzϕ=0.20 Wb

Q: Q10) For the transformer shown in Figure below, determine (i) The turns ratio of the transformer…

A: A transformer has two windings - the primary and the secondary. The ratio of the number of turns in…

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

A:

Q: A 220/1100 V transformer takes no- load current of 3A and absorbs 150 W. What is no load power…

A: A 220/1100 V transformer has, No load current (Io)= 3 Amp No load power (Po)= 150

Q: Which of the following is the correct equation for calculating the rated current for a single-phase…

A:

Q: mber of turns on the primary and dary windings of a 1-o transformen d 40 respectively. If the…

A:

Q: 7- A 5KVA, 220/110v, SOHZ 1-phase transformer has Regt and Xeqt of 0.968Q and 1.9630 respectively.…

A: Solution - Given data, 5 KVA, 220/110V 1-phase transformer f = 50 Hz Req1 = 0.968 ohm Xeq1 = 1.963…

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.