Can any one explain this question regarding number of lights allowed in a circuit?

How many 26 Watts CFL can be connected to a 2300W DUSK-DAWN PHOTO SENSOR? Please explain the meaning of difference in number of lights as shown in the attached image. Ref:...

11 December 2017 4,289 1 View

What is this error about. "The sample time after propagation is [0, 0]. Enter a discrete sample time in 'PI/Integrator'" ?

07 August 2015 9,401 0 View

What is the purpose of using 1.2 here in sine pwm in this simulink. In space vector pwm also I saw source voltage divided by 1.8. Why is it used?

Please explain with sufficient theory

07 August 2015 8,521 5 View

Why am I getting this error in PID tuning (Simulink)?

Please find the links and attachments. "FRESTIMATE command creates some temporary variables in MATLAB workspace and these variables seem to disappear before the simulation. This is most likely due...

07 August 2015 7,813 5 View

I want to generate 60Hz signal using PWM . What should be the PWM Frequency i should provide in "PWM GENERATOR" block in simulink?

Is there a calculation? Im new in pwm techniques

06 July 2015 8,956 2 View

In simulink model, in 3 level Neutral clamped Inverter they are taking positive half dc voltage and negative half dc voltage w.r.t neutral?

And giving it to a MUX and again to demux and then subtracting +Vdc/2 and -Vdc/2 and again giving it to a gain of .5. Why these are required? Why that .5 again?

06 July 2015 9,950 2 View

In space vector pulse width modulation , Maximum Modulation index for linear modulation is .907 or .866?

06 July 2015 9,013 0 View

How can I include space vector PWM converter in simulink just by using some gains? I've read that pwm converter can be modeled as a gain with a delay?

Space vector PWM= Kpwm * e^(-sTsw). What is the value i should give for Kpwm for space vector pwm? e^(-sTsw) is for dead time? And for dead time i should use switching frequency as T??

06 July 2015 6,312 1 View

How can I simulate VSC Based HVDC for under modulation and over modulation?

06 July 2015 5,712 3 View

Please help with this error "Algebraic state in algebraic loop containing 'SVPWM/Sum' computed at time 0.0 is Inf or NaN.?

Algebraic state in algebraic loop containing 'SVPWM/Sum' computed at time 0.0 is Inf or NaN. There may be a singularity in the solution. If the model is correct, try reducing the step size (either...

06 July 2015 4,876 1 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

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

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 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

Can linear DNA be used as template for site-directed mutagenesis?

Is it possible to induce site-directed substitution mutation by quick-change method on linear dsDNA? or it has to be cloned in some vector? If yes, should it be treated with the Dpn1 enzyme...

03 March 2021 401 4 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View