If we apply a test voltage across a piece of insulation, then by measuring the resultant current and applying Ohm’s Law (R=E/I), we can calculate the resistance of the insulation. Unfortunately, more than one
Note: while the DMM settings described in this article were written to describe using a Fluke DMM, most digital multimeters will have very similar controls and will use similar measurement procedures. At left our photo illustrates the Sperry DSA-500 clamp-on multimeter/ammeter reading 0.28A (Amps...
Gupta, Lipi. "How To Calculate The Dimensions Of A Carton"sciencing.com, https://www.sciencing.com/calculate-dimensions-carton-8524034/. 22 December 2020. APA Gupta, Lipi. (2020, December 22). How To Calculate The Dimensions Of A Carton.sciencing.com. Retrieved from https://www.sciencing...
if you can observe primary current waveform with an oscilloscope you should see effect of BH curve nonlinearity . The closer you are to the knee the more distorted will be the sine wave current. If you have only a voltmeter and ammeter - Check open circuit voltage to confirm turns ratio ...
We can measure this drop and apply Ohm’s law to calculate the current. Graphical representation of Ohm’s Law Ohm’s law describes the relationship between voltage (V), current (I), and resistance (R). If we know two out of three of those, we can easily calculate the third via simpl...
Switch off the motor, and then disconnect one of the wires powering the motor. Attach your ammeter or digital multimeter set to measure DC current; attach it between the motor and the detached wire. Always wire ammeters in series with a circuit, placing them between the power source and the...
The current is the same everywhere in a series circuit. It does not matter where you put the ammeter, it will give you the same reading. How do you find the voltage drop in a series circuit? To calculate voltage drop, E, across a component, you need to know the resistance of the co...
Step 5: Calculate RCalculating the first part:10V1.0×10−3A=10,000ΩNow substituting back into the equation for R:R=10,000Ω−20Ω=9,980Ω ConclusionThe required series resistance R to convert the galvanometer into a voltmeter with a maximum range of 10V is:R=9,980Ω --- Show ...
Ten years ago students studying the diffraction pattern produced by an illuminated slit did not know that the same method of procedure would enable them to calculate the directional characteristics of an underwater sound signaling apparatus. Some of the students who had studied the principles, ...
d. Calculate gas input: 3600 x 1000 = Btuh number of seconds from step c e. Btuh calculated should approximate input rating on boiler rating label. ❏ Check manifold gas pressure by connecting manometer to downstream test tapping on main gas valve. Manifold pres- sure for natural gas ...