A 5 KVA, 2300/230 V, 50 Hz transformer was tested for iron losses with normal excitation and copper losses at full load and these were found to be 40 W and 112 W respectively. Calculate the efficiency of this transformer at 0.8 p.f. for the following KVA outputs 1.25, 3.75 & 7.5

A 5 KVA, 2300/230 V, 50 Hz transformer was tested for iron losses with normal excitation and copper losses at full load and these were found to be 40 W and 112 W respectively. Calculate the efficiency of this transformer at 0.8 p.f. for the following KVA outputs 1.25, 3.75 & 7.5

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: Convert the rotational mechanical system into an equivalent mechanical network imilar to an…

A: Open Loop System (OLS)-A system having a input in the system which does not depends on the system…

Q: What will be the value of R1 with the given RTL code XOR , where R1 is 1011 0110, R2 is 1100 0111

A: Given, R1 = 1011 0110, R2 = 1100 0111 RTL code XOR =?

Q: Find out i) Input impedance function and ii) V0(s)/Vin(s) for the network shown in the Fig

A: The input impedance and transfer function of the circuit can be obtained by converting the circuit…

Q: 9. If the output voltage of an amplifier is 1.2 V rms and its voltage gain is 50, what is the rms…

A: Given: Output voltage, V0=1.2 V Voltage gain, Av=50

Q: The equivalent resistance between L and M of the circuit 6.2 L 14.02 205 20 10.02

A: Given circuit,

Q: long, ayer o smaller packets and sends the packets into the netwo assembles the packets back into…

A: a) The time taken to send message from source host to first packet switch 8 * 106 2 * 106 4seconds…

Q: The following differential equation describes a water tank system 1 1 AR -h(t) ==q;(t) A where _h(t)…

Q: Is that 7 you used in step 3 ? (7(10+3KTd) - 3k) / 7

A: Yes : 7 is used in step 3.

Q: The response of a second order system

Q: OR e) What is BILS? Explain their significance in power system studies.

A: BILS : BIL is stand for basic level insulation which is also known as lighting impulse voltage or…

Q: 14. Consider the discrete-time signals that follow. For each signal, determine the fundamental…

A: As per company guidelines, we are supposed to answer the first 3 subparts of the question. Kindly…

Q: Vin = 10 V O a. 3.75 mA Ob. 2.5 mA 4k Ohm 4 k Ohm O c.- 1.25 mA O d. 5.7 MA The current it in the…

A: Here opamp is with positive and negative both feedback but negative feedback is dominating so it's…

Q: Please use laplace/admittance method in solving the problem

Q: Assume zero initial conditions and no damping and solve for the response of a mass-spring system to…

Q: (Based on Neamen, Problem 10.37) - An ideal n-channel MOSFET has the following parameters 30μm 2μm =…

Q: An integrated circuit is .. A. A complicated circuit B. An integrating device C. Much costlier than…

A: Given, An integrated circuit is .. A. A complicated circuit B. An integrating device C. Much…

Q: Ifa material is having a band gap of 1.42eV, then this material will produce a photon output at the…

A: Given, Material having bandgap, EeV=1.41 eV Photon output at the wavelength, λ=?

Q: A stationary closed Lissajous pattern on an oscilloscope has 3 horizontal tangencies and 2 vertical…

A: Given data, Number of horizontal tangencies Nh=3 Number of vertical tangencies Ny=2 Horizontal input…

Q: Consider the following system α 1 * = ( ₁ ) x + (²) ₁² x 1 (1) Calculate the equilibrium of the…

Q: H3. (Dynamical System ) Explain various types of oscillator in non linear system

A: Nonlinear oscillator : Whenever a force is exerted on any particle then there is movement in the…

Q: In an attempt to boost DC voltage, two students thought of using a transformer to accomplish such…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 9.10 The loss formula coefficient matrix for a two-pla system is given by 0.001 -0.0001 -0.0001…

A: Given, The loss formula coefficient matrix for a two plant system, B=0.001-0.0001-0.00010.0013 MW-1…

Q: 1. Find the values of I and V in the circuit shown below for the following cases: (i) Assuming the…

A: As per our guidelines we are supposed to be the first three questions only. Kindly repost the other…

Q: Q7:- A 3-phase, 4 pole, I.M ,developing a maximum torque at speed 1320 rpm .The resistance of star…

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

Q: Compute for the current flowing at Z2 using nodal and mesh analysis. Answer must be in polar form.

Q: 1. Find the out the prime and essential prime implicants for the following Boolean functions. Write…

Q: Ifa material is having a band gap of 1.42eV, then this material will produce a photon output at the…

A: Given data : The energy band gap E=1.42eV Velocity of light c=3×108m/sec Planck constant…

Q: 5. Please refer to the parallel-based clipper circuit shown below for this problem. For simplicity,…

A: Given: Required: (a) Plot the output V0(t) for 0≤t≤T (b) Plot the voltage…

Q: Can you explain step by step what is inside the circle

Q: Determine: (a) Frequency ratio, (b) The damped and natural frequency, od and n (c) The settling…

A: Given:

Q: Name and explain the process to join any electrical component on strip board

A: A circuit board known as a "stripboard" has parallel strips of copper material along the length of…

Q: List various kinds of faults that may occur in an alternator

A: There are two types of faults occuring in an alternator. These are A) Internal faults B) External…

Q: Working , principle of sf6 circuit breaker

Q: Q2: Design a clamper to perform the function indicated in Figure 3. 15v Vin -15v + Ideal diode Fig 3…

A: We need to design a clamper circuit to perform the function indicated below : Clamper is an…

Q: n the circuit shown, switch S1 is closed at t = 0 and switch S2 is opened at t = 0.2 second. Find…

A: Inductor is an element which does not allow a sudden change in current. The circuit comprises of…

Q: A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Different type of fault in power system

A: List out the Different types of fault in power system

Q: 16. The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of…

A: Given: Resistance of two branches parallel circuit, Req=12 Ω Resistance of one branch, R1=18 Ω…

Q: Q1 The following differential equation describes a water tank system d 1 1/ h (1) + / 72 h(t) = — /…

A: 1) Given : Differential equation describing a water tank system d) To derive the output in Laplace…

Q: In step 2, why you multiply 10.0,0025 only and did not do it for 0.025s and 1. And how you got that…

A: To explain the solution in step -2 of the previous question

Q: Half Wave diode rectifier circuit consists of Select one: O a. Two diode in Parallel with RL O b.…

Q: Determine the power output of a DC armature having 1152 lap connected conductors carrying 150 A and…

Q: Consider a unity feedback system with a forward transfer function, G(s) = = K s(s+ 2)(s + 10) (a)…

Q: The response of the system is given by Y(s) = Find the final value of the system output. (5+3)(5+4)…

A: Given data, Transfer function, Ys=s+3s+4ss+22s+1

Q: Anoil fired furnace is heating 10 TPH material. The temperature of material is increased by 50°C to…

Q: carrying? Ans. 10 45 percent 10.44 A 100-KVA transformer is at 80 percent of rated load at power…

Q: Q3:- Determine the value of voltage (V1) and (V2) in figure (2-31) by using voltage divider rule. 45…

A: Given data : The given circuit is shown below,

Q: What will be the average power in the load for the circuit shown, when alpha = π/4 Assume SCR to be…

Q: • 29000kw 7000Ω • 0.0003ms . 0.05 A • 0.00009v • 7000000v 9000kw Q2- converts the following:- a.…

A: All the given data and answers are given below.

Q: 10 μα IBV V BE || B Vcc= +5V DB E (م) Rc = 3 kn с BIB Ic + VCE

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

A 5 KVA, 2300/230 V, 50 Hz transformer was tested for iron losses
with normal excitation and copper losses at full load and these were
found to be 40 W and 112 W respectively. Calculate the efficiency of
this transformer at 0.8 p.f. for the following KVA outputs 1.25, 3.75 &
7.5

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

Step 2

Step 3

Step 4

Step by step

Solved in 4 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
The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d. air core transformer.
For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
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
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
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?
A single phase 1.1 KVA, 50 Hz, 220/110 transformer has an Iron losses = 80 W and equivalent resistance referred to low voltage side = 0.95 0. Its maximum efficiency at 0.7 :p.f. lagging is
A 25 kVA, 2 kV(rms)/100 V(rms) single phase transformer is connected between a 120 V(rms) utility supply and a resistive load. The load current was measured to be 20 A(rms). i. Determine the active power of the load. ii. Determine the primary RMS current. iii. Determine the equivalent resistance of the transformer as seen by the utility supply.
In a transformer that has 10 times more turns on the secondary side (side 2) than on the primary side (side 1), the magnitude of the voltage/EMF across the windings on the secondary side, E₂ will be... O a.... 10 times lower than the voltage/emf on the primary side, E₁. O b.... the same as the voltage/emf on the primary side. O c.... always zero regardless of the voltage on the primary side, E₁. O d.... 10 times higher than the voltage/emf on the primary side, E₁.
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? *
A. What are the various causes of voltage drop in atransformer? B. A single phase transformer has arated secondary voltage of (230v).when Loaded by a purely inductive load to its rated Value of current ,its terminal voltage drops to (200 v). Calculate its regulation and efficiency.
Q6 Complete the answer : If connected .................... to the transformer changes, copper loss varies.