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 describe briefly your concept of a scalar field and

1. Describe briefly your concept of a scalar field and illustrate with an example. 2. Describe briefly your concept of a vector field and illustrate with an example. 3. How do you depict pictorially the gravitational fie ...

1 a 15 v aa battery that costs 1 is rated at 18 ah what is

1. A 1.5 V AA battery that costs $1 is rated at 1.8 Ah. What is its cost per kWh? 2. Suppose a 12-V battery bank rated at 200 Ah under standard conditions needs to deliver 600 Wh over a 12-h period each day. If they oper ...

Load flow calculation -in the power network shown below

Load Flow Calculation - In the power network shown below, node 1 is the slack bus, where the nodal voltage is defined as (1.0∠0 o ) pu, nodes 2, 4 and 5 are load buses, and node 3 is a generator bus where the voltage mag ...

In the first approach to streaming stored audiovideo figure

In the first approach to streaming stored audio/video (Figure 28.24), assume that we need to listen to a compressed song of 4 megabytes (a typical situation). If our connection to the Internet is via a 56-kbps modem, how ...

When bill clinton took office in january 1993 he faced two

When Bill Clinton took office in January 1993, he faced two major economic problems: a large federal budget deficit and high unemployment resulting from a very slow recovery from the recession of 1990 to 1991. In his fir ...

Term project - the step response of rlc circuitsthe team

Term Project - The Step Response of RLC Circuits The team project pertains to Chapter 9 in the text book. You should submit a single report and Multisim/ LTSpice file. The report should be submitted as a Word document an ...

Data at a rate of 1 million pulses per second are to be

Data at a rate of 1 million pulses per second are to be transmitted over a certain communications channel. The unit step response g(t) for this channel is shown in Fig. P2.7-1. a. Can this channel transmit data at the re ...

Explain the reasoning in the application tiger woods rents

Explain the reasoning in the application "Tiger Woods' Rents" as to why Tiger Woods was able to capture essentially all the rents from some companies but not from others.

You need to preare a project reportconstruct a digital

You need to preare a project report. Construct a digital radio transmit binary data over a distance of 15 cm. The digital radio circuit basically consisted of two main blocks: transmitter and a receiver. The transmitter ...

1 the rocket nozzle shown below consists of three welded

1. The rocket nozzle shown below consists of three welded sections. Determine the axial stress at junctions 1 and 2 when the rocket is operating at sea level. The mass flow rate is 770 lb m /s. 2. The pressure on the con ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen