pH is defined as follows: the lower-case letter “p” in pH stands for the negative common (base ten) logarithm, while the upper-case letter “H” stands for the element hydrogen. Thus, pH is a logarithmic measurement of the number of moles of hydrogen ions (H+) per liter of solution.
What does ph stand for on electric motor?
PH – Stands for the number of phases of the electric motor. RPM – The Revolutions Per Minute of the electric motor running at a full load.
What does ph 1 mean on a motor?
PHASE The designation PH on the nameplate indicates whether the motor is single-phase (1) or 3-phase (3). A single-phase circuit can be obtained from a 3-phase power system. … Generally a 3-phase motor operated with a variable frequency drive can be connected to either a single-phase supply or a 3-phase supply.
What is PH on motor?
Phase/Enable (PH/EN) Interface
The PH signal sets the current direction across the outputs of the H-bridge and is usually always set to either logic HIGH or LOW. The EN signal sets the speed of the motor according to duty cycle. The longer the duty cycle, the faster the speed of the motor.
What is in in electrical terms?
List of Abbreviations
|A||ampere – unit of electric current|
|In||current setting of protective device|
|Iz||current carrying capacity|
|IT||earthing system (see 5.2.6)|
Does pH affect voltage?
The voltage between the electrodes is directly proportional to the pH of the test solution.
What is the pH of AC water?
Pure condensed water is neutral (pH 7). However, water in contact with air is slightly acidic (approximately pH 5.6) due to dissolved carbon dioxide (CO2).
What is pH full form?
The letters pH stand for potential of hydrogen, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance. The pH scale was devised in 1923 by Danish biochemist Søren Peter Lauritz Sørensen (1868-1969).
What does pH stand for?
pH may look like it belongs on the periodic table of elements, but it’s actually a unit of measurement. The abbreviation pH stands for potential hydrogen, and it tells us how much hydrogen is in liquids—and how active the hydrogen ion is.
What is the importance of pH?
pH is an important quantity that reflects the chemical conditions of a solution. The pH can control the availability of nutrients, biological functions, microbial activity, and the behavior of chemicals.
What happens when you increase acidity alkalinity?
An increase in acidity causes pH levels to fall. An increase in alkaline causes pH levels to rise. When the levels of acid in your blood are too high, it’s called acidosis. When your blood is too alkaline, it is called alkalosis.
How do you analyze pH?
Technically, the pH scale measures the logarithmic concentration of hydrogen (H+) and hydroxide (OH-) ions, which make up water (H+ + OH- = H20). When both types of ions are in equal concentration, the pH is 7.0 or neutral. Below 7.0, the water is acidic (there are more hydrogen ions than hydroxide ions).
What are the 3 basic types of electrical circuits?
This is also known as an ‘open’ circuit. Open circuit voltage is measured when there is no current flow through the circuit. There are three basic types of circuits: Series, Parallel, and Series-Parallel. Individual electrical circuits normally combine one or more resistance or load devices.
What are the 3 basic electrical quantities?
Ohm’s law is the most important, basic law of electricity. It defines the relationship between the three fundamental electrical quantities: current, voltage, and resistance.
What does U and V stand for in electricity?
Both of voltage description “U” and “V” are proper, however it must be mentioned that in European notation “U” describes voltage source while “V” describes rather voltage potential. It means that U = V1 – V1 (voltage is a difference between voltage potentials).