Will a turned ON thyristor (SCR) work normally if, for eg., (-20 V) and (-40 V) voltages are applied at its anode and cathode terminals, respectively?

Or, conversely, if, 40 V and 20 V voltages are applied at the anode and cathode terminals respectively?

08 September 2014 5,964 6 View

What will be the result (or output) if a D.C. supply is superimposed or connected to a 3 Phase A.C supply?

Also what will be the output or resultant waveform?

10 November 2013 9,700 8 View

Can oil be used to fill the air gap in between the rotor and stator of any asynchronous machine?

Mineral oil (of very high dielectric strength & low viscosity) filled in between the air-gap may reduce the reluctance of the air-gap as well as the air-gap power losses.

09 October 2013 6,106 7 View

Measurement of Energy - can anyone help?

The energy-meter (present in households) measures only the active component of power used, but what happens to the reactive component of the power?

09 October 2013 9,381 5 View

Can a DC Generator also act as a DC amplifier, besides generating DC voltage?

Seeking advise on the topic

08 September 2013 2,942 24 View

Hunting phenomena in alternators?

During hunting phenomena in alternators, does the speed only oscillate about its normal value or does the rotor actually oscillate about a fixed point? Is the slip in the alternator also affected...

08 September 2013 490 4 View

What is a 'cycloconverter'?

What is a 'cycloconverter'?

08 September 2013 7,155 5 View

Can the blocked rotor test be performed on a Synchronous Motor?

.

08 September 2013 8,459 5 View

Can anybody explain the Zero Power Factor (Potier Reactance) method for finding the voltage regulation of an Alternator?

How is the method most accurate in finding the regulation, given the fact that the Potier triangle is plotted MANUALLY on the graph?

08 September 2013 9,863 1 View

Why is a humming sound audible in transformers?

I connected a single phase step-down transformer in step down configuration and found that a certain amount of humming was audible. But when I connected that same transformer in step-up...

07 August 2013 1,008 9 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