Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

problem 1)a) With neat sketches, describe the high resistance and low resistance methods of arc interruption.

b) A 50 Hz, 11 kV, 3 alternator with earthed neutral has a per phase reactance of 5 and is connected to a bus bar through a circuit breaker. The distributed capacitance up to the circuit breaker between phase and neutral is 0.01 F. Find out:

(a) peak re-striking voltage across the breaker contacts

(b) frequency of oscillations

(c) average rate of rise of re-striking voltage upto the first peak.

problem 2)a) With a neat sketch, describe the process of current chopping.

b) With a neat sketch, describe peterson coil earthing.

problem 3)a) Briefly describe the following terminologies: (a) fusing current (b) arching time (c) energizing quantity (d) burden (e) under reach.

b) Briefly describe the essential qualities required of a good protection system

problem 4)a) With a neat sketch, describe the working principle of SF6 circuit breaker.

b) With a neat sketch, describe the protection scheme for a ring main system

problem 5)a) With a neat sketch, describe the operation of a Buchholz relay used for transformer protection.

b) With a neat sketch, describe the phase comparison method of carrier current protection used for transmission line protection.

problem 6)a) Briefly describe the various abnormal conditions that may occur during induction motor operation.

b) Prove that duality does exist between amplitude and phase comparators.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M96288

Have any Question? 


Related Questions in Electrical & Electronics

Suppose that a continuous-time system is described by the

Suppose that a continuous-time system is described by the impulse response a. Compute the transfer function of the system. b. Find out if the system is BIBO stable. c. Plot the poles and the zeros of the system. d. Write ...

In a leaky bucket used to control liquid flow how many

In a leaky bucket used to control liquid flow, how many gallons of liquid are left in the bucket if the output rate is 5 gal/min, there is an input burst of 100 gal/min for 12 s, and there is no input for 48 s?

A bounded-amplitude signal xt has bilateral laplace

A bounded-amplitude signal x(t) has bilateral Laplace transform X(s) given by a. Determine the corresponding region of convergence. b. Determine the time-domain signal x(t).

Determine the maximum film velocity in problemproblem

Determine the maximum film velocity in Problem. Problem Aviscous film drains uniformly down the side of a vertical rod of radius R. At some distance down the rod, the film approaches a terminal or fully developed flow su ...

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.

An exhaust stream leaving a semiconductor fabrication plant

An exhaust stream leaving a semiconductor fabrication plant contains 4 mol % volatile organic chemical, VOC, pollutant. Twenty-five cubic meters per minute enter the bottom of a packed absorption tower and flows counterc ...

You are to size a grid-connected south-facing pv system for

You are to size a grid-connected south-facing PV system for Las Vegas to deliver 4000 kWh/yr. Use a tilt equal to latitude minus 15°. a. What should be the ac-rated power of the PV/inverter system? b. What temperature de ...

1 what is the criterion for a material to be a good

1. What is the criterion for a material to be a good conductor? 2. Give two examples of materials that behave as good conductors for frequencies of up to several gigahertz. 3. What is skin effect? Discuss skin depth, giv ...

Assignmentbefore you start please read the following

Assignment Before you start please read the following instructions carefully. 1. This assignment forms part of the formal assessment for this module. If you fail to reach the required standard for the assignment then you ...

Consider a bar element as shown in the figure the

Consider a bar element as shown in the figure. The cross-sectional areas are A 1  and A 2  at nodes 1 and 2, respectively, and vary linearly. In addition, the gravitational acceleration is applied along the axial directi ...

  • 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