Q2: The F.L. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i) Calculate the loading of the transformer at which efficiency is maximum (ii) what would be the losses for giving maximum efficiency at 0.85 of full-load if total full-load losses are to remain unchanged.

Q2: The F.L. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i) Calculate the loading of the transformer at which efficiency is maximum (ii) what would be the losses for giving maximum efficiency at 0.85 of full-load if total full-load losses are to remain unchanged.

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 3.32MCQ

See similar textbooks

Related questions

Q: compute the developed torque Ta (in N.m) if the r

Q: (b) Table Q2(b) provides specific details location and parameters of a small hydropower plant and…

A: Here, we have given information about a hydropower plant and dam like : the waterhead, average…

Q: A student is planning to install a photo-voltaic system in a location where the peak sun hours is 4…

A: given Rated power=200 Welectrical energy =6 KW-hrefficiency=75%

Q: Q2) For the dc and ac load lines of transformer-coupled class A transistor characteristic shown in…

A: BJT and MOSFET are the class of transistors used in analog electronics. They are widely used…

Q: The total area of a football ground is 1500 m?. If we cover this ground with PV cells to make it as…

A: The valuer of solar irradiance varies from place to place and with the season. The value at the…

Q: For each of the topics below, give ONE example demonstrates the application of mechanical sciences…

A: GIVEN: application of mechanical science inter related to electrical engineering discipline FIND:…

Q: A two-core feeder 106 kilo meter long supplies a maximum current of 136 A at 400 volts. The demand…

Q: Q1) a) As an engineer working in an Electrical appliance's manufacturing company, explain how the…

A: The magnitude of the induced emf in a circuit is proportional to the rate of change of the magnetic…

Q: 3. The Electric Company provides electric power service to a three state region in the country. The…

A: As we have given : Q=4500-100P kWhP1=15 cents/kWhP2=10 cents/kWhP3=5 cents/kWh

Q: Problem 1 An electrical power supply system is constructed with a DC machine with the following…

A: Design of an electrical power supply system using a DC machine signifies that the machine is a…

Q: With Matlab software and solve the following ten questions Provide detailed solutions to the…

A: MathWorks created the MATLAB programming language. It began as a matrix programming language with…

Q: A two-core feeder 170 kilometer-long supplies a maximum current of 129 A at 400 volts. The demand is…

Q: - These provide information that enables human beings to take some prescribed action accordingly. A)…

A: B) Monitoring functions Monitoring functions has the applications in the measuring instruments as…

Q: (5) A manufacturing plant installed the system above (500 KW) and has a full load capacity of 700KW…

A: Note: Here it is mentioned that "the system above". but the system details not given. We assume,…

Q: A two-core feeder 184 kilo meter long supplies a maximum current of 153 A at 400 volts. The demand…

A: For a two-core feeder -Imax=153AV=400 VThe resistance of conductor is,R=0.0101 ΩThe length of…

Q: You are working as an engineer a company. During an energy audit, you realize that your company has…

A: Given Building use hours = 12 h/month Core loss of transformer = 5% Rating of transformer = 40 Kw…

Q: An electric heater can be modelled as a resistor. In Turkey heaters are designed and sold for 220V…

Q: The car of Light Railway Transit (LRT) is propelled by 660-volt DC motor connected to the DC teeder…

A: Given: Terminal voltage of motor Vt=660 V Tractive effort FT=4500 kg=4500g Newton Car velocity v=50…

Q: You are given a 1KW-220V rated Electrical machine. The machine can operate even if the voltage level…

A: Resistance will be, R=V2P Here, V is voltage, P is power R=22021000R=48.4 Ω

Q: Task 1 (a) A low voltage transformer manufacturing line has a purchase order of 1700 piece. If the…

A: (a) Given: Production Rate=22 Transformer/minute Solution: The time required to produce 1…

Q: What is power systems?

A: Power system is meant to use the various sources of energy such as coal and convert it into…

Q: A two-core feeder 138 kilo meter long supplies a maximum current of 142 A at 400 volts. The demand…

Q: Two-Wire DC Street Mains AB, 600m long, is fed from both ends at 220 V. Loads of 40 A, 80 A, 100 A…

Q: A 2-wire feeder carries a constant current of 250 A throughout the year. The portion of capital cost…

A: We have an 2-wire feeder which carries a constant current of 250 A throughout the year. We need to…

Q: An electricity power plant delivers energy at a rate of 20 MW to a city 1 km away. The common…

Q: Q2: A: A hydro-electric station is operated with a mean head (h) of 30 m and consume (discharge…

A: In hydro electric power plant, the potential energy of water is used to generate electricity. It is…

Q: A manufacturing plant installed the system above (500 KW) and has a full load capacity of 700KW and…

A: Note: Here it is mentioned that "the system above". but the system details not given. We assume,…

Q: Complete the table below. General Classifications According to 1 Power Source Robot Classifications…

A: Here is your answer! I hope this will help you.

Q: IS a $35,000. He can also choose to Internal Engine 50% probability of a good market, what should he…

A: Ritz must have a semi conductor.

Q: A two-core feeder 156 kilo meter long supplies a maximum current of 107 A at 400 volts. The demand…

A: Given values are - IL=107AL=156kmCross section areaa=120mm2Resistance per km per…

Q: Consider a 250 Wp rated monocrystalline PV module. It results from a manufacturing process that…

A: Consider a 250 WP rated mono crystalline PV module. It results from a manufacturing process that…

Q: Explain the working operation of the transformer in a microwave oven. Sketch a circuit diagram in…

A: The working operation of the transformer in a microwave oven: At the point when the magnetron of the…

Q: 4.2 Eskom uses a 1MVA transformer to supply electricity to Willows community. The electricity cost…

A: Given information, Eskom uses a 1MVA transformer to supply electricity to Willows community. The…

Q: A 2300/230-volt distribution transformer is tested for polarity. If 118 volts is impressed across…

Q: Q3/ A 50 kW, 200 V separately exited dc machine is operating at 1200 r/min with Ea is 90 V and RA is…

A: 50KW DC separately excited machine. Speed N= 1200rpm If the VT = 87 V And EA = 90V then find the…

Q: C2(i)Assume that annual energy requirement of an industry is 20900 kWh ,we calculate that what will…

A: Given parameters :Annual energy requirement=20900 kWhWind speed=6 m/sDensity of air=1kg/m3 COP=0. 40…

Q: Estimate the total land (foot-print) that is required for a wind farm for generating an 10 amount of…

A: The total energy to be generated in the wind form is, Total energy=20%…

Q: A 2-wire d.c. street mains AB, 600 m long is fed from both ends at 220 V .Loads of 2O A, 40 A, 50 A…

Q: 1. Using the Multi-sim, connect the circuit Shown in Fig.(2), and take Vy-10V, and R 820, R- 1002…

A: Given circuit is as shown below : All resistors are in parallel ∴ Voltage across all of them will…

Q: 1. Why do we apply reduction factors in the design of electric equipment? Also, why do we increase…

A: Electrical equipment- In general electrical equipment is used to modify a electrical input to…

Q: A transformer outside of a business steps the average voltage down from V1 to V2. The transformer…

A: Transformer: A transformer is a type of passive electrical device that uses electromagnetic…

Q: Calculate the required number of turbines we need in a wind farm generating 12 MW if cach turbine…

A: Given in the questions: Length of the blades, L = 12m Velocity of wind, V = 12m/sec Air density,…

Q: If the power generated by a wind system at a height of 50 m is equal to 30 kw at a wind speed of m/s…

A: Given the power generated by a wind system at a, Height, h1 = 50 m Power, P1 = 30 kW Wind speed, v1…

Concept explainers

Thermocouple

A thermocouple is a temperature measurement device. It includes diverse metal wires which are joined collectively to form a joint. At the same time as the junction is hot or cold, a small voltage is generated inside the measuring thermocouple electrical circuit, which corresponds to the temperature.

Question

I want the solution in detail. With all the expressions explained

Q2: The F.L. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i)
Calculate the loading of the transformer at which efficiency is maximum (ii) what would be
the losses for giving maximum efficiency at 0.85 of full-load if total full-load losses are to
remain unchanged.

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 3

VIEW

Step by step

Solved in 3 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
For the transformer in Problem 3.10. The open-circuit test with 11.5 kV applied results in a power input of 65 kW and a current of 30 A. Compute the values for GcandBm in siemens referred to the high-voltage winding. Compute the efficiency of the transformer for a load of 10 MW at 0.8 p.f. lagging at rated voltage.
The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d. air core transformer.
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.
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
For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
What is the purpose of a transformer? Draw the symbols for a transformer.
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.
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
10 A three-phase transformer is given. The number of turns of the high voltage winding is N1=850 and the number of turns of the low voltage winding is N2=34. The high voltage winding is energized with V1= 10 kV rms line-to-line and V2= 400 V rms line-to-line has been taken from the low voltage winding. What is the connection of the low voltage winding if the high voltage winding is Y-connected? Εισαγάγετε την απάντησή σας
Answer only please The resistance of a transformer winding is 0.25 ohm at 25oC. When operating at full load, the temperature of the winding is 75oC. The temperature coefficient of resistance for copper at 0oC is 0.00427 per oC. What is the winding resistance at full load? a. 0.512 ohm b. 0.315 ohm c. 0.298 ohm d. 0.271 ohm
In the circuit in Figure 2, the capacitor connected to the a-b terminals of the transformer anda circuit consisting of resistance is defined as a load circuit. a)Find the average power spent by the load circuit? b) How much of the average power calculated in a) by the resistance in the load circuit and how muchspent by the capacitor? Comment on the results obtained?