If a transformer has some losses, the efficiencyof transformer is given as_o n= Output-Losses/Out putO n= Output| Out put + LossesO n= Output/ Out put - LossesO n= Output+Losses/Out put

Efficiency of transformer is the ratio between output power and input power.

Answered: If a transformer has some losses, the…

If a transformer has some losses, the efficiency of transformer is given as_ o n= Output-Losses/Output Оn3Оutput/ Оut put + Losses O n = Output| Out put - Losses o n = Output+Losses/Out put

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter4: Symbols

Section: Chapter Questions

Problem 7SQ: The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d....

See similar textbooks

Related questions

Q: As given in the figure, the primary side of an ideal transformer is fed from a 400 Volt source with…

Q: Given a transformer (single-phase, 10kVA, 2400/240V, 60Hz) Z1 = 5.2 + j12.5 ohms; Z2 = 0.06 + j0.12…

A: In this question we need to find a load voltage of transformer for given condition.

Q: For a 150 kVA, 2400/240 V transformer, the equivalent circuit parameters are given as RI - 0.2 Ohm,…

A: The solution can be achieved as follows.

Q: For any transformer, one can prove that Il*N1/fl=I2*N2*f2, where fl and f2 denote the frequencies of…

Q: Assignment 2 A 60-Hz 20-kVA 2400/240-V-rms transformer has the following equivalent-circuit…

A: Given f=60 HzV1=2400V2=240 Calculating transformer ratio a=V1V2a=2400240a=10

Q: A transformer takes a No load current of 0.64 A and power factor of 0.654 lag, when its primary is…

A: First we will draw phasor diagram , from phasor diagram we will find relation between iron loss…

Q: 23/A) A 1000-VA 230/115-V transformer has been tested to determine its equivalent reunt. The results…

Q: It is possible to connect A-Y transformer in parallel with another A-Y transformer? True O False

A: Is it possible to connect delta star transformer with another delta star transformer in parallel

Q: 2. A 2000-VA 230/115-V transformer has been tested to determine its equivalent circuit. The results…

A: The open-circuit test and short-circuit test data of a 2000 VA, 230/115 Volts transformer is given…

Q: The single-phase transformer in the following figure has a load voltage Zl of 120 Vrms. If the load…

Q: Compute the copper losses at full load if a 500KVA transformer has 90% efficiency at both half-load…

Q: 0 A method for determining the equivalent circuit of a transformer consists of two tests: the…

A: Open circuit test: Since the no-load current is limited to 5% of full load value, the primary copper…

Q: A 4:1 ratio step-down transformer takes 1 A at 0.15 power-factor on no-load. Determine the magnitude…

A: In this solution we discuss about no load equivalent circuit of transformer & its no load…

Q: The parameters of a 1200/300V. 50HZ single phase transformer are given below: R-5N, X-10 fn, R 0.3…

A: The equivalent circuit of a transformer represents the behavior of the transformer with the help of…

Q: b) A 20kVA 8000/277V distribution transformer has the following resistances and reactances: Rp = 320…

A: This question is related to single phase transformers

Q: transformer as shown in the figure given below. transformer is connected to form an auto A…

Q: A 500 kVA transformer has an efficiency of 95% at full load and also at 60% of full load; both at…

A: (a)Separation of losses: Where Pi is iron loss and PC is full load cu loss.…

Q: Transformer rated powers and relative short-circuit rates in a step-down transformer station are…

A: For the electrical design of the electrical substation, Short circuit MVA and Short circuit current…

Q: I just need help with 3 and 5 Using the parameters from the Typical Transformer Values Sheet for…

A: Note: we are solving 3 and 5 assuming given values (1,2,4) are correct. we assumed single phase…

Q: A step down transformer is also called Autotransformer O Distribution transformer O Star-star…

Q: A 20-kVA 8000/480-V distribution transformer has the following resistances and reactances: R, = 32N…

Q: Explain the importance of transformer and basic insulation level in the distribution system. Justify…

A: The Basic Insulation Level (BIL) of a transformer is a method of expressing the voltage surge the…

Q: A 20-kVA, 8000:480-V distribution transformer has the following resistances and reactances: Rp= 32…

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

Q: Q3) The equivalent parameters of a transformer referred to the 10 2. The load voltage is =…

A: In this question we need to find a load impedance

Q: Primary and secondary series impedance parameters of a single phase transformer of 220V/110V…

Q: (a) The efficiency of a 320 KVA, single phase transformer is 98.5 % when delivering full load at…

Q: For a 150 kVA, 2400/240 V transformer, the equivalent circuit parameters are given as R1 = 0.2 Ohm,…

Q: The short circuit losses of a 15 kV single-phase transformer are 700W. Given that the reduced…

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

Q: 4.1 Assume that an ideal transformer used to step down 13.8–2.4kV and that it is fully loaded when…

A: Given:Transormer is ideal,Hence, the i/p KVA = o/p KVAVoltage rating 13.8 kV/ 2.4 kVAlso, o/p KVA =…

Q: 1. A quantity is expressed in per unit if it is divided by a chosen base quantity having the same…

A: Given, Base power= 10 KW Base Voltage (HV)=2400 V Base voltage (LV)=240 V Base current (LV)=Base…

Q: the current that is required to magnetize the core of a transformer is called____. A- primary…

Q: A single phase, 250 kVA, 10kV/2kV 60 Hz transformer has the following equivalent circuit parameters…

A: Given Single phase transformer 250 KVA,10 Kv/2Kv 60 HzRc(HV)=60.2 kΩ Xm(HV)=18.44…

Q: A transformer of 100MVA, 60Hz, 138/69 kV, works as step down, has the following parameters: r1 =…

Q: A 230/400 V single-phase transformer absorbs 35 W when its primary winding is connected to a 230 V,…

Q: A 10-kVA, 450/120V, 50-Hz transformer has the following circuit parameters: R, = 0.12 n, R, = 8.533…

A: As per Bartleby guidelines, since you have posted a question with multiple sub-parts, we will solve…

Q: Task 1 The three-phase transformer has following rated data: SN=160 kVA (rated apparent power),…

A: Open circuit test: This test is carried out on the low voltage side and determines the no-load…

Q: For any transformer, one can prove that Il*N1/fl=12*N2*f2, where fl and f2 denote the frequencies of…

A: Transformer is an static device which convert energy from one circuit to other circuit using primary…

Q: TRUE or FALSE: If a transformer operates at maximum efficiency, then the power factor is at unity

A: condition for maximum efficiency is copper losses are made equal to iron losses . and maximum…

Q: ABB company manufactures 44 kVA, 2200/220 V conventional transformer. Using this transformer, design…

Q: 1. A 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has ar LV side of 0.01 + j0.09 Q. This…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A, determine V½ l, Z, and the impedance Z',, which is the value of Z, referred to the primary side…

A: Given: N1=1000N2=250V1=1000∠0°I1=5∠30° The relation between voltage and the turns of the transformer…

Q: 1. An ideal transformer with N = 2400 and N2 400 is connected with an impedance Z2 across winding 2,…

Q: Parameters of a distribution transformer of 20 kVA, 2200/220 V, 50 Hz, R1 -5Ω R2-0.04 Ω Rc-3000 Ω…

A: Dear student as per our guidelines we are supposed to solve only one question in which it should…

Q: 1. An ideal transformer with N = 2400 and N2 = 400 is connected with an impedance Z2 across winding…

Q: A 20-KVA, 20,000/480-V, 60-Hz distribution transformer is tested with the following results:…

A: Given Parameters of a distribution transformer. We need to sketch the per equivalent circuit.…

Q: 1. A 1000-VA 350/140-V transformer has been tested to determine its equivalent circuit. The results…

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

Q: Calculate the daily efficiency of a single-phase transformer with an output capacity of 350 kVA at…

A: The solution can be achieved as follows.

Q: A 1000-VA, 230/115-V transformer has been tested to determine its equivalent cir- cuit. The results…

A: Transformer of 1000 VA,230/115-v Open circuit test(secondary side)Voc=115 vIoc=0.11 APoc=3.9 wShort…

Concept explainers

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.

Question

100%

If a transformer has some losses, the efficiency
of transformer is given as_
o n= Output-Losses/Out put
O n= Output| Out put + Losses
O n= Output/ Out put - Losses
O n= Output+Losses/Out put

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
(a) An ideal single-phase two-winding transformer with turns ratio at=N1/N2 is connected with a series impedance Z2 across winding 2. If one wants to replace Z2, with a series impedance Z1 across winding 1 and keep the terminal behavior of the two circuits to be identical, find Z1 in terms of Z2. (b) Would the above result be true if instead of a series impedance there is a shunt impedance? (c) Can one refer a ladder network on the secondary (2) side to the primary (1) side simply by multiplying every impedance byat2 ?
Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit equivalent circuit shown in part (c) contains an ideal transformer which cannot be accommodated by some computer programs. (a) True (b) False (ii) In the - circuit representation for real c in part (d), the admittance parameters Y11 and Y12 would be unequal. (a) True (b) False (iii) For complex c, can the admittance parameters be synthesized with a passive RLC circuit? (a) Yes (b) No
A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when operated at rated load, 0.8 power factor lagging. This transformer is to be utilized as a 1440/1200-V step-down autotransformer in a power distribution system. (a) Find the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the ratings as a two-winding transformer. Assume an ideal transformer. (b) Determine the efficiency of the autotransformer with the kVA loading of part (a) and 0.8 power factor leading.
Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source whose voltage is e1(t)=100(1| t |)volts for 1t1ande1(t)=0 for | t |1 second. A2- farad capacitor is connected across winding 2. Sketch e1(t),e2(t),i1(t),andi2(t) versus time t.
An ideal transformer has no real or reactive power loss. (a) True (b) False
The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d. air core transformer.
An infinite bus, which is a constant voltage source, is connected to the primary of the three-winding transformer of Problem 3.53. A 7.5-MVA,13.2-kV synchronous motor with a sub transient reactance of 0.2 per unit is connected to the transformer secondary. A5-MW,2.3-kV three-phase resistive load is connected to the tertiary Choosing a base of 66 kV and 15 MVA in the primary, draw the impedance diagram of the system showing per-unit impedances. Neglect transformer exciting current, phase shifts, and all resistances except the resistive load.
A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters: Resistance of the 2400-V winding: R1=0.75 Resistance of the 240-V winding: R2=0.0075 Leakage reactance of the 2400-V winding: X1=1.0 Leakage reactance of the 240-V winding: X2=0.01 Exciting admittance on the 240-V side =0.003j0.02S (a) Draw the equivalent circuit referred to the high-voltage side of the transformer. (b) Draw the equivalent circuit referred to the low-voltage side of the transformer. Show the numerical values of impedances on the equivalent circuits.
For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is referred to winding 1 (primary) by multiplying Z2 by (a) The turns ratio (N1/N2) (b) The square of the turns ratio (N1/N2)2 (c) The cubed turns ratio (N1/N2)3
The transformer of Problem 3.16 is supplying a rated load of 50 kVA at a rated secondary voltage of 240 V and at 0.8 posr factor lagging. Neglect the transformer exciting current. (a) Determine the input terminal voltage of the transformer on the high-voltage side. (b) Sketch the corresponding phasor diagram. (c) If the transformer is used as a step-down transformer at the load end of a feeder whose impedance is 0.5+j2.0, find the voltage VS and the power factor at the sending end of the feeder.
Consider a source of voltage v(t)=102sin(2t)V, with an internal resistance of 1800. A transformer that can be considered as ideal is used to couple a 50 resistive load to the source. (a) Determine the transformer primary-to-secondary turns ratio required to ensure maxi mum power transfer by matching the load and source resistances. (b) Find the average power delivered to the load, assenting maximum power transfer.