There are 3 terminals of an Earth Tester meter. Connect two terminals of meter to earth as far as cables can. Fix the two rods in to soil with the help of a small Hammer. Then connect two knobs of the meter with these rods.Connect the third terminal to the Earth Pit,to whom earth resistance is to be measured. The meter reading will indicate the resistance of the earth pit.The Best resistance of an earth pit must be under unity(<1).
Answer BY: Naeem Ahmad Electrical Engineer.
Usually a volt meter is placed across a component to measure the voltage drop across that component. Doing this places the volt meter resistance in parallel with that component's resistance, which will always lower the total resistance. Since the volt meter resistance is usually very large relative to the resistance of the element being measured, the total resistance does not change significantly. The formula for total resistance of two parallel elements is: Rtot = (R1*R2)/(R1+R2), as R1 (the volt meter) >> R2, Rtot ~= (R1*R2) / (R1) = R2 If a volt meter is placed into a circuit instead of around an element of that circuit, it will raise the resistance of the circuit, load the circuit with, and interrupt "normal" operation of the circuit (normal operation = how things would be without the meter in place). More importantly, the volt meter would then be measuring the voltage developped across itself (instead of an element of the circuit), which is not the point of this tool / this would be a misapplication of a volt meter.
all of tri vector meter is naot good
You measure at a socket, you should measure well less than one ohm resistance between earth and neutral. .my answer: theoritically it is zero
a DC clamp meter works on the principals of what is called "Hall Effect." The meter creates a magnetic field, and the DC voltage passing through the wire interacts to crate a meter reading.
The forces that affect the rate of a falling object are Gravity and Air Resistance. Gravity affects the speed and the velocity of the object by speeding it up as it falls closer to the earth, and Air resistance works against the object pushing against it.
if the resistance of the meter is low that will act as a parallel load effecting the reading. If the meter can be made with infinite resistance then the meter will not effects the actual reading.
You can use a multi-meter to measure resistance. The specific portion of the meter for measuring resistance is called an ohmmeter.
Zero ohms.
By ohm meter.
if any thing is ideal then that has no any resistance
OHM-meter.
Measures resistance.
Resistance
If the meter is sensitive enough and there is a resistance between the neutral and ground then the meter should be able to detect it.
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm
Ohmmeter.