An ideal 15-kVA transformer has 300 turns on the primary winding and 50 turns on the secondary winding. The primary is connected to 2000v, 60HZ supply. Determine: a. Primary and secondary currents in full load b. Secondary electromotive force (e.m.f) C. The maximum core flux

An ideal 15-kVA transformer has 300 turns on the primary winding and 50 turns on the secondary winding. The primary is connected to 2000v, 60HZ supply. Determine: a. Primary and secondary currents in full load b. Secondary electromotive force (e.m.f) C. The maximum core flux

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.3MCQ: For an ideal 2-winding transformer, the ampere-turns of the primary winding, N1I1 is equal to the...

See similar textbooks

Related questions

Q: 3. A single phase, 50-Hz transformer has 80 turns on the primary winding and 400 turns on the…

A: According to question: f=50HzT1=80T2=400A=200×10-4m2V1=240V a) The emf induced in the secondary is…

Q: Excitation arm parameters of 1000V/400V single phase transformer with 15kVA power: Xm = 6kΩ an Given…

A: Given ;1000/400 V1-ϕ transformer with a power 15KVA,Xeq=6 K ohm Re=20 Kohm a)Electrical equivalent…

Q: (b) A single-phase transformer, with primary turns of 500, is delivering full-load of 80 kW at a…

A: Disclaimer: Since you have asked multipart questions, we will solve the first three subpart for…

Q: Equivalent circuit diagram and electromotive force phasor for the idle operation of a step-up phase…

A: A transformer is a static device, it consist of two winding interlinked by common magnetic circuit…

Q: If the open circuit voltage is 225V and the full load voltage is 200V, then the percentage…

Q: (a) A 220 / 400V, 13KVA, 50Hz single phase transformer has at full load, a copper load of 140W. If…

Q: A 400-kVA transformer has a primary winding resistance of 192 and a secondary winding resistance of…

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

Q: b) A single phase 50 Hz, transformer with turns ratio of 25:1400 has cross sectional area of 110 cm2…

Q: Consider the following short circuit transformer as shown in figure below which operate at: the…

A: The solution is given below

Q: 2. A 3-phase, 6,600/415-V, 2,000-kVA transformer has a per unit resistance of 0.02 and a per unit…

Q: 18. An ideal 50-Hz, core-type transformer has 100 primary-turns and 200 secondary- turns. The…

A: The data given in the question are: N1=100, N2=200, V1=220V, Bm=1.2T,f=50Hz The cross sectional are…

Q: The open circuit test in a 100 kVA, 2000/200 V, 50 Hz, single phase transformer gives 200 V, 90 A, 5…

Q: If a 50-turn transformer winding has a 120-V rms applied voltage, and if the peak coupling flux is…

A: Given values are - TurnsN=50Vt=120VoltFluxϕ=20mWb

Q: A single phase transformer with 50 kVA, 2400V/240V, 50 Hz; Idle operating voltage 2400V, idle…

Q: A three-phase transformer is given. The number of turns of the high voltage winding is N1=850 and…

Q: 9- An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Cu…

A: Given, Full load KVA, Sfl=150 kVA Core loss, Pi=1.4 kW Full load Copper loss, Pcu=1.6 kW Power…

Q: transformer (A) having a rating of 2000 KVA is connected in parallel with transformer (B) with 4000…

Q: If the open circuit voltage is 225V and the full load voltage is 214V, then the percentage…

A: Percentage regulation is given by R R = (VOC - VFL ) / VFL VOC = Open circuit voltage VFL =…

Q: A single-phase transformer is rated at 30 kVA. The transformer has full-load copper losses of 700 W…

Q: The magnetic core of a 100 kVA, 60 Hz core-type transformer is wound with 5268 turns on the HV side…

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

Q: The no-load current of a single-phase transformer is 5.0 A at 0.3 power factor when supplied from a…

Q: Q.2 (a) Give TWO reasons why we must use transformer in electrical system. (b) A single-phase…

A: a) To reduce transmission line losses, transformers are utilised to boost up the input voltage.…

Q: QI An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load…

A: Given data: Core loss = 1.4 kW Full load Copper loss= 1.6 kW Full load KVA =150 Power factor…

Q: A single phase stepped-down transformer rating 500 kVA have a primary and secondary winding…

Q: The per-unit system calculations method allows to: Select one: O a. eliminate the need for explicit…

A: Most of human energy requirement is meet by generating electrical energy. Once electrical energy is…

Q: Iron loss and copper loss in a 25 kVA, 200/200 volt single phase transformer are 400 watts and 500…

Q: A single-phase transformer has 500 primary and 1200 secondary turns. The dimension of the core is 30…

Q: The required no-load voltage ratio in a 150 kVA single-phase 50 Hz core-type, two-winding…

Q: 1. (a) The diagram for a single phase 60 MVA transformer is given below. Convert it to a Step-down…

A: Given 2-winding transformer details are V1/V2=50/100 kV.S=60 MVA The input and output currents of…

Q: A 150 kVA, 2500/250 V, 50 Hz, single phase transformer has a no-load current of 0.75 A and a core…

Q: 2. Determine the core area, the number of turns and pos the tapping point for a 500-kVA, 50-Hz,…

A: In this question auto transformer is given....We have to find out core area , no of turns and…

Q: PROBLEM A 3300V/440V, single-phase transformer takes a no-load current of 0.8A and the iron loss is…

Q: Assume that a single-phase, two-winding transformer has a core loss of 1500 W. The secondary (i.e.…

A: Given Single phase transformer of Core loss P ; = 1500 w Vout=12=480 vPout=40kw Cos ϕ 2=0.8 leading…

Q: Q/ The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load…

Q: Illustrate the equivalent circuit of this transformer referred to the high voltage side of the…

Q: ) A single-phase transformer, with primary turns of 500, is delivering full-load of 80 kW at a…

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

Q: 9. The no-load current of a single-phase transformer is 5.0 A at 0.3 power factor when supplied from…

Q: determine (i) the core loss current(Ic) (ii) the power factor on no-load and (iii) the magnetizing…

A: Given,the measurement is taken while the secondary of transformer is open circuited. So we can say…

Q: 75 kVA, 2400/4800 V, 50 Hz one-phase two-winding transformer will be connected as auto transformer…

Q: A 200 – kVA transformer with impedance of 5 percent and the power factor of the load is 85 percent.…

A: Given, A transformer with KVA rating, S=200 kVA Impedance, Z=5% Power factor, cosϕ=85%=0.85 Primary…

Q: The no-load current of a transformer is 15 at a power factor of 0.2 when connected to a 460-V, 50-Hz…

A: Given: No-load current (Io)=15 A No-load power factor=0.2 (Lagging always for a transformer) No-load…

Q: 18. An ideal 50-Hz, core-type transformer has 100 primary-turns and 200 secondary- turns. The…

Q: (a) Consider the concept of magnetic circuit to explain the effect of air gap on the flow of flux.…

Q: A 100,000-kVA 230/115-kV ∆-∆ three-phase power transformer has a per-unit resistance of 0.02 pu and…

A: Given Data Rating 100,000-kVA 230/115-kV Type : ∆-∆ three-phase per-unit resistance = 0.02 pu…

Q: QS/A single phase, 50-Hz transformer has 80 turns on the primary winding and 400 turns on the…

Q: (b) A 40-kVA, 2600/1300-V, single-phase transformer has a core loss of 620 W. The transformer has a…

A: The solution is given below

Concept explainers

Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors. The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.

Question

can i get some help

4. An ideal 15-kVA transformer has 300 turns on the primary winding and 50 turns on
the secondary winding. The primary is connected to 2000v, 60HZ supply.
Determine:
a. Primary and secondary currents in full load
b.
Secondary electromotive force (e.m.f)
C.
The maximum core flux

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

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

An ideal transformer has no real or reactive power loss. (a) True (b) False
A single-phase 100-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 60 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: (a) primary voltage, (b) load impedance, (c) load impedance referred to the primary, and (d) the real and reactive power supplied to the primary winding.
For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the rated voltage on the other winding? (a) Yes (b) No
Consider Figure 3.4. For an ideal phase-shifting transformer, the imda nce is unchanged when it is referred from one side to the other. (a) True (b) False
A 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a 150-MVA,0.8 lagging power factor load through a step-down 230/23-kV transformer. The impedance of the line and transformers at 230kVis18+j60. Determine the tap setting for each transformer to maintain the voltage at the load at 23 kV.
Three single-phase, two-winding transformers, each rated 450MVA,20kV/288.7kV, with leakage reactance Xeq=0.10perunit, are connected to form a three-phase bank. The high-voltage windings are connected in Y with a solidly grounded neutral. Draw the per-unit equivalent circuit if the low-voltage windings are connected (a) in with American standard phase shift or (b) in Y with an open neutral. Use the transformer ratings as base quantities. Winding resistances and exciting current are neglected.
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.
A single-phase 50-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down transformer at the load end of a 2400-volt feeder whose series impedance is (1.0+j2.0) ohm. The equivalent series impedance of the transformer is (1.0+j2.5) ohms referred to the high-voltage (primary) side. The transformer is delivering rated load at a 0.8 power factor lagging and at a rated secondary voltage. Neglecting the transformer exciting current, determine (a) the voltage at the transformer primary terminals, (b) the voltage at the sending end of the feeder, and (c) the real and reactive power delivered to the sending end of the feeder.
For an ideal 2-winding transformer, the ampere-turns of the primary winding, N1I1 is equal to the ampere-turns of the secondary winding, N2I2 (a) True (b) False
Consider a bank of this single-phase two-winding transformers whose high-voltage terminals are connected to a three-phase, 13.8-kV feeder. The low-voltage terminals are connected to a three-phase substation load rated 2.0 MVA and 2.5 kV. Determine the required voltage, current, and MVA ratings of both windings of each transformer, when the high-voltage/low- voltage windings are connected (a) Y-, (b) -Y, (c) Y-Y, and (d) -.
The ideal transformer windings are eliminated from the per-unit equivalent circuit of a transformer. (a) True (b) False
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.