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

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

Detuned Reactors usage in PFI devices?

What are Detuned Reactors and why they are used in Power Factor Correction devices.I have found in Schneider Electric website that that they are inductors which are use to control harmonics but...

06 July 2016 4,717 2 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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

How can I make stacked bar graph with scatter plot?

I want to make a stacked bar graph with showing each data value as dots. I tried with graph pad prism, version 6, but could not succeed. Does anyone have tried before making such graphs?

01 March 2021 9,383 1 View

What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

Its effect appears in real part of ac conductivity also. Can anyone suggest any reason behind it?

26 February 2021 3,487 3 View

Can I use a graph from a another source in a thesis?

I have a permission from X company to use their graph from a report, but they have a reference in the bottom left corner of the graph as follows: "Source: Database Y". Is it OK to use this graph...

24 February 2021 2,269 3 View

I have need of XRD graph analysis software for phase identification. Can you please provide links for software tools which can be downloaded?

i am trying to download x'pert high score software, but can't download it. please do suggest software for phase analysis

24 February 2021 5,687 4 View

Are there lab markers/pens resistant to Roti-Histol?

Hi, I'm looking for a pen/marker to write on the smooth, transparent (non-frosted) part of microscopy slides which does not get washed away by alcohols and most importantly Roti-Histol. I want to...

24 February 2021 9,902 5 View

Could you please suggest to me research in which a relation between the shear wave velocity and the degree of saturation for stone was discussed?

Hi all, I am looking for a graph or a relation that relates the degree of saturation and the shear wave velocity for the marlstone. Looking forward to your suggestions Best Regards

24 February 2021 9,690 1 View

I have a problem with kanamycin - why the kanamycin doesn't affect?

Hi everyone, I need to expression of GFP with pET28 plasmid in E. coli BL21(DE3) plysE. Transformed cells have kanamycin and chloramphenicol resistance. Normally, only transformed cells should...

22 February 2021 4,032 4 View