Actual loading method, Electrical Engineering

Assignment Help:

Actual Loading Method

This method is employed commonly for testing of single phase meters within laboratory. On a meter testing bench that is equipped along with several taps to facilitate meter testing at variant load conditions. The load is provided through standard resistance or lamps obviously power factor is unity.  Load adjustments are completed in steps of 1/10th of full load at unity power factor. It is significant to note in this connection in which consumer's power factor varies from 0.5 to unity (or 0.85). Thus, meter must be calibrated at 0.5 PF. To achieve this condition, the current coil is energized through R phase and voltage coil through Y phase and the polarity of pressure coil is reversed. Under these conditions, PF becomes 0.5 since of 120 degree phase shift among voltage and current vectors.


Related Discussions:- Actual loading method

State the drawbacks of in band and out band voice signalling, a. Enlist the...

a. Enlist the benefits and drawbacks of in band and out band voice signalling? b. Describe Channel Associated mode, Channel Non-Associated mode and QuasiAssociated mode of commo

Program implementing the conjugate gradient method, Write a program impleme...

Write a program implementing the conjugate gradient method (un-preconditioned). Solve the  matrix equation corresponding to a finite difference node-spacing, h = 0.02m in x and y d

Voltage transfer function of the high-pass filter, Determine the voltage tr...

Determine the voltage transfer function of the high-pass filter circuit shown in Figure, and find the expression for ω 0 .

Microcomputer - introduction to microprocessors , Microcomputer A micr...

Microcomputer A microprocessor is a  general purpose central processing  until of a digital  computer system. It has  arithmetic  logical unit  control circuits and a set of r

Draw an electrical relay diagram, Draw an electrical relay diagram rung sho...

Draw an electrical relay diagram rung showing a N/O contact of CR1(coil) in series witha N/C contact of CR2(Coil), operating a lamp L1. A delay-on (TON) relay has a preset of 5.

Introduction to power systems, Q. Introduction to power systems? Thomas...

Q. Introduction to power systems? Thomas A. Edison's work in 1878 on the electric light led to the concept of a centrally located power station with distributed electric power

Input resistance of an ideal op amp, Q. The input resistance of an ideal op...

Q. The input resistance of an ideal op amp with no feedback is infinite. Investigate the input resistance of an op amp with a feedback resistance RF: (a) When there is no resist

Single- and three-phase systems, Ac power has significant practical advanta...

Ac power has significant practical advantages over dc power in generation, transmission, and distribution. One major drawback of the single-phase circuit is the oscillatory nature

Characteristics of transformer, Q. Characteristics of Transformer? The ...

Q. Characteristics of Transformer? The characteristics of most interest to power engineers are voltage regulation and ef?ciency. The voltage regulation of a transformer is a me

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd