only question b (a) What will happen if the primary of a transformer is supplied with a DC supply? Show thatemf per turn (emflturn) is the same in both the primary and secondary windings.(b) Derive the maximum efficiency condition of a transformer considering core loss and copperlosses.(c) In a 25 KVA, 1000/400 V, 1- o transformer, the core loss and full load copper losses are 200W and 300 W respectively. Calculate the efficiency at unity power factor on full load and halffull-load.

Efficiency,η=OutputOutput+Losses

Answered: maximum efficiency condition of a…

Engineering

Electrical Engineering

maximum efficiency condition of a transformer c

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 3.9P

See similar textbooks

Related questions

Q: R R 400 Volts Y Y B B.

A: The given circuit diagram is shown below: It is given that: VL=400 VIL=50∠-30° A

Q: 1) An 8-bit register contains the Hex value A9. What is the register value after an arithmetic shift...

A: A9=10101001After Arithmetic Shift Right- 11010100

Q: Find Ip in A (ampere) unit if E=9V, internal resistance Rp=43.3, and R=4582. (Answer should roundoff...

A: I am attaching detailed solution image of this question.

Q: Q1. Which among the four choices is not true in using a voltmeter. a) Always connect voltmeter in pa...

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: Given the System: BUS, IO MW GI PEAK LOAD : 15 MW 24 HRS JOMW G2 A M) ENERGY : 240 MWH G3 IS A STAND...

A: Given: The system: To find: Determine the Utilization Factor of the system shown.

Q: In this network, the switch K is closed at t = 0, after achieving a ady state while the switch was o...

Q: . CALCULATE THE TOTAL pewER 야 TH는 CIRCUIT. (USE ANY TWO APPROPRIATE NET WORK ANALYSIS) 56V. 8V. IT e...

Q: Good circuitry: Number of convenience outlets for 9-A loading on a 15-A circuit?

A: For a good circuitry - We have to determine the number of convenience outlets for 9-A loading on a 1...

Q: R1 +V1 1 V R2 R3

Q: What is Vo in volts in the circuit below?(answer in numeric only) +8 V 4.7 ka Ip Si

A: Here, we have given a circuit, having a resistor in series with the Silicon diode. We have to calcu...

Q: Find the v, / vị ratio for the given circuit. What is the maximum value of K in order to ensure that...

A: Here, we have given a circuit, For which we have to find the ratio V0Vi. So, we will use the concep...

Q: 4.8 Find the phasors for the following field quantities: (a) E,(z, t) = E, cos (@t – Bz + 4) (V/m) -...

A: For the following quantities we have to find the phasors

Q: (a) What is the voltage gain, Ay of the amplifier?

Q: Find the Thévenin and Norton equivalent circuits for the circuit shown in Figure P2.91

A: This question belongs to circuit theory . It is based on the concept of Thevenin's theorem and Norto...

Q: A Car travels P00 Km in 4h. Calculata. its re lo city in: a) klomaters per ) kilomatars per seend 9m...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for ...

Q: identical, 3-phase, Y-connected alternators A and B share equally a load of 10MW at 33kV at 0.8pf la...

Q: 400 Consider a closed-loop system with a zero-order hold. Consider G, (s) = - s2 + 400 Determine the...

A: Given Gp(s)=400s2+400T=1 sec

Q: A wire with length of 2000 meters have a diameter of 0.041 cm has a resistance of 3.5 ohms is drawn ...

A: Here, we have given a wire with a length of 2000 meters. And the diameter and the resistance of the...

Q: Calculate the total power when three identical resistances each of 10 Q are connected wye when conne...

Q: Determine the source current. No Handwriten please

A: Given circuit,

Q: Introduction and explanation about alternator regulation

Q: First Color Second Color Third Color Resistance Value Brown Blue Brown 2 Red Blue Black 3 Brown Blac...

A: I am attaching detailed solution image of this question.

Q: Using Node-Voltage Method, find the node voltages for nodes 1 and 2 in the following circuit: IA 20 ...

A: This question comes under circuit theory . It is based on the concept of nodal analysis in the circu...

Q: R-1K +2V OV IN3007 2V +1V Ground At which cycle will the waveform be cut from the diagram above? a) ...

Q: Question 4 a. AM modulation is inefficient. With reference to the frequency domain, explain why. How...

A: As per the guidelines of bartleyby I should only first subpart if they are not interlinked questions...

Q: Q. 4 Consider the linkage shown in figure 3. A force P is required to maintain its equilibrium. All ...

Q: A Y - connected load is supplied from a 400 V, 3 - phase, 3 – wire symmetrical system RYB. The branc...

A: In the given question the source is balanced sourece having phase sequence RYB. The phase voltage ac...

Q: m(t) LPF y(t) Fc= 15KHZ. Figure 1 2 cos(3000 nt) a. If the power of the message is 10 kW, what is th...

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for yo...

Q: Get the phase difference of the two signals. Only the absolute value of the angle is needed. a(t) = ...

Q: Obtain an expression for vc in the circuit of Fig. 8.87 valid for all values of t. (b) Sketch vc(t) ...

Q: 4. Upper FF is FFO (DO) while lower FF is FFO (D1) D D >c Clock Figure Example of a sequential circu...

Q: 2. Determine the mean and variance of a random variable uniformly dis- tributed in [a, b].

A: We are authorized to answer one question at a time, since you have not mentioned which question you ...

Q: A star - connected load consists of three identical coils, each ofinductance 159.2mH and resistance ...

Q: Q5: Derive the expression for power P = VI in an electrical circuit. Q6: What is the resistance of a...

A: 5) From Ohm’s law, we know that ⇒I=VRPower in a circuit is the amount of work done by the circuit in...

Q: Sketch the even and odd parts of the signals shown in Fig. 2. Label your sketches carefully. x(t) 1 ...

A: Given:

Q: 7.11 The electric field of a uniform plane wave propagating in free space is given by E = (x + jŷ)30...

A: Note: We are authorized to answer one question at a time since you have not mentioned which question...

Q: Q2: Solve by Separable Differential Equation. y=xe

A: The given equation is shown below: y'=xey

Q: Ex. 592. Refer to Figure 592. [R1,C1,S1,P1]=[ 0,15,0,0]. [R2,C2,S2,P2]=[ 5,14,0,1]. Determine A,B,C,...

Q: Q2/ Calculate the effective resistance of the following combination of resistances (Req) and the vol...

A: Given circuit:

Q: 6. If a varactor diode is to be connected at the red spot, where would its anode be placed? RT Vi, O...

A: As we know that the varactor diode always function in reverse biasing condition.

Q: The minimum size ratio for following branch circuit conductor is: a. Twelve, 6 AWG conductor with T...

A: From standard NEC table, area values are, a) 6 WG- 0.0507 in2b) 8 WG- 0.0366 in2c) 10 WG- 0.0211 in2

Q: Three non – inductive resistances of 5, 10 and 15 Q are connected in star and supplied from a 230 V ...

Q: Find vo 10 kl w- 100 kn 20 kn 9V 30 kn 10 v(+ 12 V 40 kn (+ 20 kn3 V.

Q: Find V in the circuit belaw. 10V 12VO 18-

Q: Determine the voltage across R2 for the first and second diode approximations. Diode: Si, r = 10 N, ...

Q: PROBLEM: • A delta-connected load whose phase impedances are ZAB=50 Ω, ZBc=-j50 Ω, and ZcA=j50Ω is ...

Q: A highly inductive load, such that load current can be assumed constant, is to be supplied from a 23...

A: Here, we have to calculate the output voltage produced by the fully-controlled and a half-controlled...

Q: find the AREA bounded by a cylind rical aoordineste P=2m 6= 0+2 Lelom b. 号r m C.

A: The solution is given below.

Q: Explain what RLC circuits do and how they work including transformers, where applicable.

A: It is asked to explain what RLC circuits do and how RLC circuits can work including transformers als...

Q: Consider the circuit shown below R Qn clock X S The circuit acts as (A) output remains stable at “O"...

Question

only question b

(a) What will happen if the primary of a transformer is supplied with a DC supply? Show that
emf per turn (emflturn) is the same in both the primary and secondary windings.
(b) Derive the maximum efficiency condition of a transformer considering core loss and copper
losses.
(c) In a 25 KVA, 1000/400 V, 1- o transformer, the core loss and full load copper losses are 200
W and 300 W respectively. Calculate the efficiency at unity power factor on full load and half
full-load.

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 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
In developing per-unit circuits of systems such as the one shown in Figure 3.10. when moving across a transformer, the voltage base is changed in proportion to the transformer voltage ratings. (a) True (b) False
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.
Q5/A single phase, 50-Hz transformer has 80 turns on the primary winding and 400 turns on the secondary winding. The net cross-sectional area of the core is 200 cm2. If the primary winding is connected to 240-V, 50-Hz supply, determine (a) the emf induced in the secondary winding, and (b) the maximum flux density in the core. ()
A 50 Hz 1-phase transformer has a turn-ratio of 6. The resistances are 0.90 ohm and 0.03 ohm and the reactance’s 5 ohm and 0.13 Q for high voltage and low voltage respectively. Determine (a) the voltage to be applied to the high voltage side to obtain full load current of 200 A in the low voltage winding on short circuit (b) the p.f. on short circuit.
Determine the regulation of a transformer in which thepercentage resistance drop is 1% and the percentagereactance drop is 5% when the power factor 0.8 leading.
Q2/ Fill in the blanks: 1- The two windings of a transformer is linked. ***** 2- If a transformer primary is energized from a square wave voltage source, its output voltage will be.......... 3- The primary winding of a 220/6 V, 50 Hz transformer is energized from 110 V, 60 Hz supply. The secondary output voltage will be ...... V.
8- In core design of power transformer the number of steps increased as the eross-sectional area increased to Increase: a) The leakage inductance. b) The cooling oil paths. c) The flux density. 9- The percentage impedance drop is an effective character of the transformer because: a) It increases the efficiency. b) It reduces leakage reactance. c) It improves the regulation.
7. The primary of a single-phase transformer takes 1 A at power factor of 0.4 when connected to a 240-V, 50-Hz supply and the secondary is on open circuit. The number of turns on the primary is twice that on the secondary. A load taking 50 A at a lagging power factor of 0.8 is now connected across the secondary. What is now the value of the primary current ? transformer.) (Neglect the voltage drops in the
:The transformer Iron losses is .Constant independent of the applied voltage O .A linear function of the supplied voltageO .A second order function of the supplied voltageO
391. A transformer has maximum efficiency at load copper loss (P.), is of full load. The ratio of its iron loss (P.) and full
Single phase half wave AC-AC converter has a resistance of R = 50 ohms. Input voltage is given as 230 Vrms. Transformer conversion ratio is 1:1. If T1 thyristor is triggered at 60 degrees; a)Rms output voltage? b)Output power? c)RMS load current and average load current? d)Input power factor? e)Average and RMS thyristor current?