A Revolved Section Drawing of the Rod Support. The rest of the drawing remains as standard orthographic projections (front, top, and right side views), complete with visible, hidden, and centerlines. In revolved section drawings, a cutting plane line is not used. Instead, a centerline indicates the axis of revolution.
What is a cross sectional study?
In medical research and social science, a cross-sectional study (also known as a cross-sectional analysis, transverse study, prevalence study) is a type of observational study that analyzes data from a population, or a representative subset, at a specific point in time—that is, cross-sectional data.
What is a cross section in math?
In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces. Cutting an object into slices creates many parallel cross sections.
What is cross section data?
Cross-sectional data, or a cross section of a study population, in statistics and econometrics is a type of data collected by observing many subjects (such as individuals, firms, countries, or regions) at the same point of time, or without regard to differences in time.
What is the area of the cross section?
The Cross section of an object is the shape you get when you cut straight through an object. It can be a rectangle, a circle even an oval, depending on how it has been cut. A circle. Thus the cross section of the above cylinder is a circle. Hence the cross sectional area is the area of a circle.
What is cross section in electricity?
If you cut directly and squarely across the width of a wire then you will look at the end and it looks like a circle. The area of that end is the cross section area, which is Pi x r^2. A larger cross section area results in lower resistance per foot when the type of wire is the same.
What is a cross section in a book?
A cross-section is a type of diagram. It is a labeled diagram that shows how something works or how the parts of something are arranged. In a cross-section, a piece is cut out of the diagram to allow you to see it in more detail. This cross-section shows the layers inside the earth.
What is the Ohm’s law?
The potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the “resistance”, R. Ohm’s Law is given by: V = I R where V is the potential difference between two points which include a resistance R.
How is current measured?
The SI unit for measuring an electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. Electric current is measured using a device called an ammeter.
What is the difference between voltage and current?
The three basic principles for this tutorial can be explained using electrons, or more specifically, the charge they create: Voltage is the difference in charge between two points. Current is the rate at which charge is flowing. Resistance is a material’s tendency to resist the flow of charge (current).
How do you find the voltage?
Part 3 Calculating Voltage across a Resistor (Parallel Circuit)
Understand parallel circuits.
Think about how the current flows.
Use the total voltage to find the voltage across each resistor.
Calculate the total current of the circuit.
Compute the total resistance of the circuit.
Find the voltage from your answers.
What is the voltage?
Voltage, also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field.
What happens to the voltage in a series?
The supply voltage is shared between components in a series circuit. The sum of the voltages across components in series is equal to the voltage of the supply. The voltages across each of the components in series is in the same proportion as their resistances.
What is series connection?
Components of an electrical circuit or electronic circuit can be connected in many different ways. The two simplest of these are called series and parallel and occur frequently. Components connected in series are connected along a single path, so the same current flows through all of the components.
How does voltage split in a series circuit?
The same current flows through each part of a series circuit. The total resistance of a series circuit is equal to the sum of individual resistances. The voltage drop across a resistor in a series circuit is directly proportional to the size of the resistor. If the circuit is broken at any point, no current will flow.
Why is the voltage in a series circuit different?
In series circuits, the resistor with the greatest resistance has the greatest voltage drop. Since the current is everywhere the same within a series circuit, the I value of ΔV = I. R is the same in each of the resistors of a series circuit. So the voltage drop (ΔV) will vary with varying resistance.
Is current split in a series circuit?
In parallel circuits the current splits up so each branch has a different effective resistance (in each of the separate branches one can use the series rule again). Due to this, the current isn’t the same everywhere in a parallel circuit. Most basic concepts that must be understood here are “Voltage” and “Current” .