Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

1) Data of a 500KVA, 3300/400 V, 50 Hz ,single phase transformer is given below. S.C test: 1250 W, 100 V –secondary short circuited with full load current in it O.C test : 1000 W –with normal primary voltage. Compute the full load regulation and efficiency at a power factor of 0.8(lag).

2)(a) Deduce an equivalent circuit of single phase two winding transformer.

(b) Maximum efficiency of single phase 250kVA,2000/250 V transformer occurs at 80% of full load and is equal to 97.5% at 0.8 pf. Find out the efficiency and regulation on full load at 0.8pf lagging if the impedance of the transformer is 9 percent

3) Describe about tap changing of transformers in detail.

4) prepare down the basic feature of electromagnetic energy conversion devices.

5) Describe why does energy storage in the magnetic material occurs mainly in air gap?

6) What do you mean by multiply excited magnetic field system?

7) prepare down the relation between energy and co-energy for linear system.

8) prepare down the suitable exs for each of single and multiple excited system.

9) prepare down the applications of singly and doubly fedmagnetic systems.

10) Describe why the field in rotating machines must be quasi-static in nature?

11) prepare down the causes for irrecoverable energy loss when flux in magnetic circuit undergoes a cycle.

12) describe why relationship between current and coil flux linkages of electromechanical energy conversion devices are linear

13) In which direction does force act with respect to magnetic field?

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M911368

Have any Question? 


Related Questions in Electrical & Electronics

1 assume alice needs to send an e-mail to bob explain how

1. Assume Alice needs to send an e-mail to Bob. Explain how the confidentiality of the e-mail is achieved using PGP. 2. Assume Alice needs to send an e-mail to Bob. Explain how the integrity of the e-mail is achieved usi ...

1 how would you use amperes circuital law in differential

1. How would you use Ampere's circuital law in differential form to find the magnetic field adjacent to the current sheet? 2. If the current density on the infinite plane current sheet of Figure 4.2 were directed in the ...

For the euler beam element shown in the figure derive the

For the Euler beam element shown in the figure, derive the interpolation functions, N I (ξ), stiffness matrix, k, and nodal force vector, f. Assume that the uniformly distributed load is  f (x) = f. Note that the referen ...

Using the navier-stokes equations in appendix e solve

Using the Navier-Stokes equations in Appendix E, solve Problem. Problem The device in the schematic diagram below is a viscosity pump. It consists of a rotating drum inside of a stationary case. The case and the drum are ...

Election polls oversight a reflection on forecast accuracy

Election Polls Oversight: A reflection on Forecast Accuracy and Bias The media, locally and internationally, has been labeling this Election results as Unexpected, based on early predictions that did not realize. We kept ...

A line assumed to be infinitely long and of unknown

A line assumed to be infinitely long and of unknown characteristic impedance when connected to a line of characteristic impedance 50 Ω produces a standing wave ratio of value 2 in the 50-Ω line. The same line when connec ...

Derive the 3 x 3 d matrix in equation for a two-dimensional

Derive the 3 X 3 [D] matrix in Equation for a two-dimensional MooneyRivlin material with three material parameters (A 10 , A 01 , and K). Use the perturbed Lagrangian method for near-incompressibility.

A liquid of density rho flows through a sluice gate as

A liquid of density ρ flows through a sluice gate as shown. The upstream and downstream flows are uniform and parallel, so that the pressure variations at stations 1 and 2 may be considered hydrostatic. (a) Determine the ...

1 what is the basis behind the construction of the smith

1. What is the basis behind the construction of the Smith Chart? How does the Smith Chart simplify the solution of transmission-line problems? 2. Briefly discuss the mapping of the normalized line impedances from the com ...

1 discuss polarization of sinusoidally time-varying fields

1. Discuss polarization of sinusoidally time-varying fields, as it is relevant to propagation of uniform plane waves. 2. Discuss the propagation of uniform plane waves arising from an infinite plane current sheet of nons ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro