Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

1) A 3-phase, 50 Hz overhead transmission line 100km. long has the following constants:

Resistance/km/phase = 0.1 ohm

Inductive reactance/km/phase = 0.2 ohm

Capacitive susceptance/km/ phase = 0.04 * 10-4 siemen

Find:

i) Sending end current

ii) Sending end voltage

iii) Sending end power factor and

iv) Transmission efficiency when supplying the balanced load of 10000 kW at 66 kV, p.f. 0.8 lagging.

2) Describe the voltage control of transmission line by:

i) Tap-changing transformers

ii) Synchronous condenser

iii) Induction regulators

3) A single core 66 kV cable working on 3-phase system has a conductor diameter of 2 cm. and a sheath of inside diameter 5.3 cm. If two intersheaths are introduced in such a way that the stress varies between the same maximum and minimum in the three layers, find:

a) Positions of intersheaths

b) Voltage on the intersheaths

c) Maximum and minimum stress

4) Derive an approximate expression for sag in overhead lines when supports are at the equal levels

5) a) describe what is lightning? describe the mechanism of lightning discharge.

b) describe the several kinds of the lightning stroke.

6) describe what is the surge absorber? Describe its types.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M913276

Have any Question? 


Related Questions in Electrical & Electronics

Tasks1learn how to use opendss2open and execute the epri

Tasks 1. Learn how to use OpenDSS 2. Open and execute the EPRI Test Circuit 24 model 3. Develop base case data sets of bus voltages and power flows 4. Provide analysis of the base case model: a. Feeder voltage profiles b ...

A create a vector of 5000 random numbers distributed

a. Create a vector of 5000 random numbers distributed according to the normal distribution with mean m = and variance s 2 = 3. b. Plot the histogram. c. Compute the mean value and the variance of the samples. d. Create a ...

1 what is the permittivity of free space what are its

1. What is the permittivity of free space? What are its units? 2. Describe the electric field due to a point charge. 3. How do you find the electric field intensity due to a continuous charge distribution? 4. How is curr ...

1 explain the term internal inductance2 what is meant by

1. Explain the term internal inductance. 2. What is meant by the quasistatic extension of the static field in a physical structure? 3. Outline the steps involved in the electroquasistatic field analysis of a parallel pla ...

1 what does the word retarded in the terminology retarded

1. What does the word retarded in the terminology retarded magnetic vector potential refer to? Explain. 2. Discuss the application of the magnetic vector potential in the determination of the electromagnetic fields due t ...

Let xt be a signal whose fourier transform xomega is

Let x(t) be a signal whose Fourier transform X(ω) is nonzero only over 3 ≤ |ω| ≤ 9. Further, only frequencies 5 ≤ |ω| ≤ 7 contain useful information (the other frequencies can be considered to contain noise or different ...

1what is an electric dipole how is its strength defined2

1.What is an electric dipole? How is its strength defined? 2. What are the different kinds of polarization in a dielectric? 3. What is the polarization vector? How is it related to the electric field intensity? 4. Discus ...

1 compare the number of bits transmitted for each pcm and

1. Compare the number of bits transmitted for each PCM and DM sample if the maximum quantized value is a. 12 b. 30 c. 50 2. Answer the following questions about predictive coding: a. What are slope overload distortion an ...

In communication channels transmitted signal is propagated

In communication channels, transmitted signal is propagated simultaneously by several paths of varying lengths. This causes the signal to reach the destination with varying time delays and varying gains. Such a system ge ...

A line assumed to be infinitely long and of unknown

A line assumed to be infinitely long and of unknown characteristic impedance is connected to a line of characteristic impedance on which standing wave measurements are made. It is found that the standing wave ratio is 3 ...

  • 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