Why the alternator connected to grid didn't loose synchronizm in following condition?

Lets say the grid is at ideal frequency 50 hz then the large load is shut of due to which frequency increases beyond 50 which tends to rotate all turbines faster than their previous speed but at...

08 September 2019 225 2 View

Why there is no current flows between B1 and B2 in Uni Junction transistor with emitter open as both the bases are on n type region?

The doping of N type is done lightly so the resistances are high between B1 and B2 but with this high resistances why electrons do not flow between B1 and B2 as leakage current flows through B2...

09 October 2017 8,897 0 View

How could i design the negative resistance region of UJT?

UJT between values of Vp and Vv operates in negative resistance region how could i graph this slope with accuracy. Vp is Peak voltage of UJT Vv is valley voltage of UJT

09 October 2017 7,596 0 View

For a medium line model half shunt, the capacitance is lumped at each end of the transmission line. Why?

I want to know why the model behaviour is very close to original structure and why we dont lumoed capacitence only in one side. Put more than two capacitence lump on model.

04 May 2017 4,615 1 View

Why ping and tracert commands works for blocked sites but sometimes do not work for open sites?

Hey once i have run ping and tracert command to my university's website but it does not work then i run above two commands for blocked site in Pakistan it works perfectly well for those so what is...

08 September 2016 4,639 0 View

Why sound waves have analog waveform in books while it is longitudinal waves ?

In signal communication books we make sinusoidal waveform for a sound waves but why we did it we know that sound waves are transverse in nature ?

08 September 2016 6,841 0 View

Double integration for area or for volume?

08 September 2016 4,452 0 View

Billing of electric motors?

Motor is inductive load so how does our electricity residential meters calculate the power consume by motor? Motor needs current to produce magnetic field so that current and voltage would be...

06 July 2016 9,718 8 View

In the zero bias condition of diodes, why does the minority carrier in n type move to p type where holes are in excess?

03 April 2015 6,795 4 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View