Example 33.10. A 3-ph, delta/star connected 11,000/440 V, 50 Hz transformer takes a line current of 5 amp, when secondary Load of 0.8 Lagging p.f. is connected. Determine each coil- current and output of transformer. (Amravati Univ. 1999)

Example 33.10. A 3-ph, delta/star connected 11,000/440 V, 50 Hz transformer takes a line current of 5 amp, when secondary Load of 0.8 Lagging p.f. is connected. Determine each coil- current and output of transformer. (Amravati Univ. 1999)

Electrical Transformers and Rotating Machines

4th Edition

ISBN:9781305494817

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter8: Three-phase Transformers

Section: Chapter Questions

Problem 8RQ

See similar textbooks

Related questions

Q: 14. The operational amplifier circuit shown in the following figure includes a thermistor. V+ 6 100…

A: As per the Bartleby answering guidelines we are supposed to answer only first Question.please repost…

Q: A dc shunt generator delivers 125 A load current at 250V. Estimate the emf induced if the armature…

A: Given Load current IL=125Avoltage V=250Varmature resistance Ra=0.05Ωshunt field resistance Rsh=50Ω

Q: 7. A step-down transformer has a turn ratio Np/Ns of 4:1. If the primary voltage Vp is 120 V(rms),…

A: Given GivenVp=120VrmsNpNS=41Vrms=Vpeak2=0.707VPeakWe dont have the value of Vpeak thus cant get the…

Q: what is the smallest gage size copper wire that will limit the conductor voltage drop to 5v when 120…

Q: Define winkler method

A: Given Data⇒ winkler method Problem statement⇒ Problem says Define winkler method

Q: Mini-split AC units commonly has a SEER rating of 20 or more. If the unit uses 8,645 watts of energy…

A: Given data:

Q: The open-circuit voltage of 246 V and the full load secondary voltage of 220 V, then the %…

Q: The open circuit voltage of a transformer is 242 V and its % regulation is 3 %, then the value of…

Q: In no-load phasor diagram of the transformer, the core loss component current is with primary…

A: Given:- In no-load phasor diagram of the transformer, the core loss component current is:…

Q: A 228 V / 111 V single-phase transformer has a core loss of 110 W and the no-load current is 0.7 A.…

A: Answer.4 Given Data V1=228V V2=111V Core loss power P1=110W No load current, I0=0.7A Core loss…

Q: 5.8. A deep induction log is used to log a section of a 16-in. bore- hole where the mud resistivity…

Q: The service of the selected alternative is required on a continuous basis. True or false?

A: Alternatives: The alternatives are basically used in decision making process and identified for…

Q: (Q.3) For the following network, calculate the fault currents (IF1, IF2, IF3 and IF4) in pu and in…

A: Given data:- Internal reactance of generators are j0.9 pu base quantities are :- 11 kV, 400 MVA To…

Q: The arc length voltage characteristic of a DC arc is given by the equation V=24+4L where V' is the…

Q: of each resistance 96) Three identical coils , 102 and inductance 42mH are conected in star to va…

A: It is given as a 3 phase supply and so line voltage is 415 V Phase voltage can be found by:…

Q: A transformer has a turns ratio of 2;1. What is the peak secondary voltage if 115 Vrms is applied to…

Q: -A d.c series generator has armature resistances of 0.52 and ies field resistance of 0.03 Q. It…

Q: A 4 pole generator with wave wound armature has 54 slots each having 28 conductors. The flux per…

A: Given, No of poles p=2No. of slots=54No. of conductors =28flux, ϕ=0.01WbZ=54×28 (i),Speed in rpm, we…

Q: Question No. 10 Electric supply of a house is through a 15 A fuse. When a 2000 W heater is used in…

A: Answer: The number of 100 W bulbs that can be used simultaneously are 13. Therefore, the correct…

Q: In a DC arc welding operation, the voltage-arc length characteristic was obtained as Vre = 20 + 5.…

A: Option c is correct.

Q: Q.2. A highly inductive d.c. load requires 12A at 150V from a 230V single-phase a.c. supply. Give…

Q: A Transformer having 1000 Primary turns connected to a 264 V a.c. supply. For a secondary Voltage of…

A: Data given- N1 = 1000 V1 = 264 V V2 = 432 V

Q: An 8-pole D.C generator has per pole flux of 40 mWb and winding is connected in lap with 960…

A: A DC generator is spinning equipment that provides a one-way voltage and current electrical output.…

Q: If the core loss of single phase transformer at full load is 177 W, then the core loss at 50% of…

Q: flux density of 1.0 T in the airgap. The details are Number of turns, N = 400 The core is made up of…

Q: a why is the resistance of small machlnes high, and the reslstance of large machines low? why Is the…

A: (a) Why is the resistance of small machines high and the resistance of large machines low? The…

Q: 1. The armature and shunt field resistance of a 50-kW, 220 V shunt generator is 0.026 ohm and 52…

Q: In a industry, a balanced 3 phase star connected load draws power from a 400 V supply. Two…

A: solved;

Q: Identify the position of plunger in a LVDT in which emf induced in upper secondary coil is lesser…

A: Solution:

Q: A transformer has a primary voltage of 480 volts and a secondary voltage of 20 volts. What is the…

A: Electric Energy transformed from one alternating-current circuit to one or more another circuit is a…

Q: The input power to a 3-phase load is measured as 6600 watts. If the line voltage and line current to…

Q: Site 1 Site 2 Figure Q1a The wind turbine blades are connected to a 4 pole doubly fed induction…

A: given; (b)Draw a schematic of the electric drive system, labelling major components

Q: There is an ambient temperature of 65°C with a temperature rating of the conductor as 75°C. What is…

A: Introduction: Heat transmission, whether through conduction, convection, or radiation, is…

Q: J. A transformer transforms (a) frequency (b) voltage (c) current (d) voltage and current. 2. Which…

A: Given

Q: C1 (i). Three Identical capacitors are connected in delta to 420 Volts, F = 50 Hz, 3 phase supply.…

Q: In Wheatstone bridge circuit ,the output voltage under balanced condition is

A: ans:- When the output voltage (V0) between terminal A and B equal to zero.

Q: If the core loss of single phase transformer at full load is 134 W, then the core loss at 50% of…

A: Given Loss at full load = 134 W

Q: A shunt generator supplies a 26kW load at 235V through cables of resistance, R = 112m0. If the field…

A: Given Power = 26 kW = 26000 W Voltage load = 235 V Resistance of cable = 112 m(Ohms) = 112 X 10-3…

Q: A long – shunt compound generator delivers a load current of 50A at 500V and has armature, series…

A: Sol^n - The shunt field current - 500/250 = 2A Hence armature current Ia= IL+Ish…

Q: Write any one disadvantage about core and shell type transformer.

A: In Core type transformers, the rectangular frame is made up by laminating the magnetic core.…

Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

Example 33.10. A 3-ph, delta/star connected 11,000/440 V, 50 Hz transformer takes a line
current of 5 amp, when secondary Load of 0.8 Lagging p.f. is connected. Determine each coil-
current and output of transformer.
(Amravati Univ. 1999)

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 with 2 images

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, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A three-phase transformer connection has a delta-connected primary and a wye-connected secondary. The center tap of the wye is used as a neutral conductor. If the line-to-line voltage is 480 volts, what is the voltage between any one phase conductor and the neutral conductor?
A balanced star-connected load of (8 + j6) Q per phase is connected to a Balanced 3- phase 400-V supply. Find the line current, power factor, power
A three-phase transformer bank has the secondary connected in a wye configuration. The center tap is used as a neutral conductor. If the voltage across any phase conductor and neutral is 120 volts, how much voltage would be applied to a three-phase load connected to the secondary of this transformer bank?
A three-phase transformer bank has the primary and secondary windings connected in a wye configuration. The secondary center tap is being used as a neutral to supply single-phase loads. Will connecting the center-tap connection of the secondary to the center-tap connection of the primary permit the secondary voltage to stay in balance when a single-phase load is added to the secondary?
Assume that a line voltage of 2400 volts is connected to the primary of the three-phase transformer and the line voltage of the secondary is 240 volts. What is the turns ratio of the transformer?
Two transformers rated at 100 kVA each are connected in an open-delta connection. What is the total output power that can be supplied by this bank?
A long-shunt compound-wound generator gives 240 volts at F.L. output of 100A. The resistances of various windings of the machine are : armature (including brush contact) 0.1 Q, series field 0.02 Q, inter pole field 0.025 2, shunt field (including regulating 0.2 resistance) 100 2. The iron loss at F.L. is 1000 W; windage and friction losses total 500 W. Calculate F.L. efficiency of the machine.
A 4-pole shunt generator with wave-wound armature has 41 slots, each having 12 conductors. The armature resistance is 0.05 ohms and shunt field resistance s 200 ohms. The flux per pole is 25 mWb, if a load resistance of 10 ohms is connected across the armature terminals, calculate the voltage across the load when generator is driven at 1000 rpm
An 8 pole, lap connected armature has 500 conductors and its generated e.m.f is 120V. If the flux per pole is 20 mWb, then the speed of machine is,
A transformer has an output of 750 VA. The primary voltage is 120 V. What is the primary current?
A 3-phase, 50 Hz, 3000 V motor develops 600 H.P. (447·6 kW), the power factor being 0·75 lagging andthe efficiency 0·93. A bank of capacitors is connected in delta across the supply terminals and powerfactor raised to 0·95 lagging. Each of the capacitance units is built of five similar 600-V capacitors.Determine the capacitance of each capacitor.
A 10 kVA transformer has a primary voltage rating of 240 volts and a secondary voltage rating of 480 volts. The transformer is connected to a circuit protected by a 100 ampere circuit breaker. The secondary is protected by a 25-ampere fuse. Does the primary require separate overcurrent protection?