The table below shows some performance parameters of a certain power transformer. Full-load voltage regulation | Full-load copper loss Load power factor 5% 2 % 0.5 Lagging The Maximnm noseihle voltage reaulation of the trans former ie:

The table below shows some performance parameters of a certain power transformer. Full-load voltage regulation | Full-load copper loss Load power factor 5% 2 % 0.5 Lagging The Maximnm noseihle voltage reaulation of the trans former ie:

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: Assume that at the instant the 2 A current source is applied to the circuit in Fig. P8.32, the initi...

Q: Find the magnitude of voltage gain corresponding to a decibel voltage gain of 55 dB.

Q: 520 V 16 N 260 N 1 A 40 Ω Vo 250 N 6Ω Using superposition to get the Thevenin voltage (in volts) see...

Q: Q7: Using the linear separability concept, obtain the response for OR function (rake bipolar inputs ...

A: Given, Or gate functional table. We have to write for bipolar inputs. Please find the below attachme...

Q: 1. Importance of studying earth resistance and resistivity. 2. Importance of bringing the earth resi...

A: As per guidelines, we can only provide the solution of one question in multiple type of questions ....

Q: 7. Which of the following are sometimes installed as an emergency system, legally required standby s...

A: In this question, Choose the correct option Which of the following are sometimes installed as an em...

Q: Adavantages and disadvantages of ANALOG IC

A: ADVANTAGES ANALOG ICS use less energy; There by involving lesser heat consumption and hence decre...

Q: Vcc RB RC Q1 NPN +88 8 Volts VC

A: We need to find out RB for given circuit

Q: Convert these from polar to rectangular form: a) –4260° b) –0.9230° 3) a) b)

Q: A poor conductor is characterized by a conductivity 200 (S/m) and permittivity € = 460. At what angu...

A: We need to find out angular frequency for given condition

Q: f(t) = t² - u(t) – (t² – 4) · u(t – 2)

Q: Problem 2 Given: f(W,X,Y,Z) = Zm(4,5,7,9,10,15) + Zd(2,6,11,13) In consideration with the most econo...

A: We need to simplify the given Boolean function .

Q: Using a map, determine the Boolean expression in Product-of-Sums (POS) form of the function based on...

A: In this question we need to find a Boolean expression in POS form by using k map .

Q: 3. Collector characteristics for the Ge transistor If VEE =2 V, VCC =12V, and RC = 2k , size RE so t...

Q: Applaing lap lace trangtom to given Circuit at + >0 Switch is closed and ci r cuit Be comes R LS US)...

A: The solution is given below

Q: Example 1. Consider a unity negative feedback system with the following open-loop transfer function....

A: In this question, A control system is given with Unity feedback system. Draw the root locus?

Q: Three identical impedances are connected in delta across a 3-phase , 600V line. If the line current ...

A: As we know that in delta three phase connection the line voltage equal to phase voltage and line cur...

Q: (a) Show that the current i(t) in an LRC-series circuit satisfies d?i di dt 1 + R + Li = E'(t), dt2 ...

A: Series RLC circuit has

Q: The self-inductance of a linear the magnetic circuit is a constant that is: dependent on the winding...

Q: Explain briefly the differences of induction motor & synchronous motor.

A: The primary distinction between induction motor & synchronous motor is that in synchronous motor...

Q: 4.Find the gain vo/vs of the circuit shown below 10K O 10KO Vs Vo 20kQ

Q: b) In a certain region with u= H, ɛ =6.25€9, o = 0, the magnetic field of an EM wave is H = 0.6 cos ...

A: b) Given: μ=μ∘ε=6.25ε∘σ=0 H=0.6 cos βx cos(107 t)az A/m c) To find: b) β and E c)

Q: Given a 100 kVA, 50 Hz power transformer. The maximum efficiency of the transformer is 98.0 % when s...

A: In this question Choose the correct option What is the copper losses? If maximum efficiency = 98% A...

Q: Define the unit step function find out its Laplace transform.

A: In this case, the unit step function needs to be defined and then the Laplace transform of the unit ...

Q: The core of an electro-magnetic structure is Laminated in order to: reduce the Stacking Factor reduc...

A: Answer is option C Reduce the eddy current loss of the core

Q: Advantages and disadvantages of DIGIT IC

A: Brief description : Digital integrated circuits are one of the major advantage on the analog discret...

Q: 5. For a defibrillator, Assume a maximum delivered energy setting of 360 J; circuit elements of 16 µ...

Q: An electric motor having PF of 82% lagging is connected to 600V , 3-phase line (line-to-line) and dr...

Q: Problem 1 Using a map, determine the Boolean expression in Product-of-Sums (POS) form of the functio...

A: In this question, We need to determine the boolean expression in the POS form. We know Maxterm ce...

Q: 240-V DC motor is connected long shunt. The armature resistance has 0.4 ohm, the series field resist...

A: In this question Long shunt DC motor is given...We have to find out efficiency of dc motor....

Q: Vc RC Q1 NPN RB RE VEE

A: Given

Q: ) Draw/ Illustrate the grouping of cells in series, parallel and combination of series-

Q: 4. Suggestions to reduce the earth resistance to a desirable value. 5. Draw the resistivity variatio...

A: As per the guidelines given ,we can only provide the solution of one question in multiple type of qu...

Q: Question 1: (prelim question) For the following circuit, where gmV12 is voltage controlled cur sourc...

Q: Given: Pt. Q (2,-3,6) and Pt. R(3, 0, -6) Solve for the following: a. Displacement vector (d1) from ...

Q: Do the following division: Divide 11011010 1.1101 by 100 1

Q: "The voltage and current across a terminal-pair are given by v(t) = 1+1.414 cos t, i(t) = 3+5.64 cos...

A: As per our guidelines we are supposed to answer only first question. Kindly repost the other questio...

Q: Vcc R1 RC Q1 NPN 188 8 R2 RE Volts VC

Q: 1. Consider the circuit below. Answer a-b. 80 N 40 Ω S0 V 5on | 750 mA § 200 A.) Suppose we kill the...

A: This question belongs to circuit theory . It is based on the concept of series and parallel combinat...

Q: Obtain the truth table of the following functions, and express each function in minterms and/or maxt...

A: Given, A function We have to find min terms form and truth table for it. Please find the below attac...

Q: The value of the impedance parameter z11 for the circuit shown is..ohms: 10 Ω 10 Ω -10 Ω

A: In this answer we will find the parameter Z11 using the concept of two port network as explained bel...

Q: Draw the corresponding symbols of i) 5/2 - way Directional Control Valve, Solenoid Actuated, Spring ...

A: Draw the symbols of (i) 5/2 way directional control valve, solenoid actuated, spring returned (ii) ...

Q: Phase a of a 3-phase system is given by, ean = 155.56cos(377t)V. There is a balance load comprised o...

A: In this question, Phase a voltage is given. Ean = 155.56 cos(377t) V Balanced Delta load is given Z...

Q: The average real power delivered to the load impedance ZL = 30 Q in the two port network shown below...

A: In this question, Find the average power P in the impedance Z= 30 ohm Power P= I2 R Watt.

Q: is a threat to -5 human life pollutants O energy O minerals

A: We need to select correct option for statement .

Q: a. Given f(t) = e cos 3t is the excitation voltage given in a circuit. Find the Laplace transform fo...

A: Given: Function ft=e-3tcos3t

Q: b. с a R1 R2 R3 R5 R6 R7 R4 R10 Rg R9 h e f g

A: Given, We have a network. We have to find equivalent resistance across a and b. Please find the be...

Q: А. Suppose we replace the source vj with a DC voltage VI in series with a small time-varying voltage...

A: The circuit is given as iA=c2vA2+c1vA+c0-----1vA=vI-RiAvA=vi+VI-RiAVA+va=vi+VI-Ria+IA-----2

Q: Define the unit step function find out its Laplace transform.

Q: Question 2: A motor runs at 900 rpm off a 460 V supply. Calculate the approximate speed when the mac...

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

The table below shows some performance parameters of a certain power transformer.
Full-load voltage regulation | Full-load copper loss Load power factor
0.5 Lagging
5 %
2 %
The Mavimum noceihle voltage reaulation of the trans former ie
5.033 %
zenon
5.385 %
3 %
4.134 %

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

Similar questions

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
For developing per-unit equivalent circuits of single-phase three-winding transformer, a common Sbase is selected for all three windings and voltage bases are selected in proportion to the rated voltage of the windings (a) True (b) False
An ideal transformer has no real or reactive power loss. (a) True (b) False
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.
Consider the oneline diagram shown in Figure 3.40. The three-phase transformer bank is made up of three identical single-phase transformers, each specified by X1=0.24 (on the low-voltage side), negligible resistance and magnetizing current, and turns ratio =N2/N1=10. The transformer bank is delivering 100 MW at 0.8 p.f. lagging to a substation bus whose voltage is 230 kV. (a) Determine the primary current magnitude, primary voltage (line-to-line) magnitude, and the three-phase complex power supplied by the generator. Choose the line-to-neutral voltage at the bus, Va as the reference Account for the phase shift, and assume positive-sequence operation. (b) Find the phase shift between the primary and secondary voltages.
A three-phase transformer is rated 1000MVA,220Y/22kV. The Y-equivalent short-circuit impedance, considered equal to the leakage reactance, measured on the low-voltage side is 0.1. Compute the per-unit reactance of the transformer. In a system in which the base on the high-voltage side of the transformer is 100MVA,230kV what value of the per-unit reactance should be used to represent this transformer?
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
A single-phase two-winding transformer rated 90MVA,80/120kV is to be connected as an autotransformer rated 80/200kV. Assume that the transformer is ideal. (a) Draw a schematic diagram of the ideal transformer connected as an autotransformer. showing the voltages, currents, and dot notation for polarity. (b) Determine the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of the kA rating is transferred by magnetic induction?
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
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 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.
The leakage reactance of a three-phase, 300-MVA,230Y/23-kV transformer is 0.06 per unit based on its own ratings. The Y winding has a solidly grounded neutral. Draw the per-unit equivalent circuit. Neglect the exciting admittance and assume the American Standard phase shift.