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Single Phase 240 120 Volts AC a test meter placed across black wire and Ground wire will read what?
Answer for USA, Canada and countries running a 60 Hertz supply service.A test meter across black and ground in a 120/240 split phase system should read about 120 volts. Note, however, that ground is not the correct reference point; neutral is the correct reference point, and the meter should be connected across black and white, or red and white, or red and black. This is because the ground connection is a protective earth ground, not intended to carry current. Since ground and neutral are tied together at the distribution panel, you might expect them to have no potential difference, but impedance in the conductors will result in a voltage drop across neutral, biasing the voltage seen between hot and ground, as opposed to hot and neutral.
When measuring voltage across a receptacle you read 120 v across black and only 20 volts across white wire?
the white wire is your neutral side (ground usually), the small potential you're measuring is bleed current
What is arcing ground?
Arcing Grounds is a phenomenon which is observed in ungrounded three phase systems. In ungrounded three phase systems operating in a healthy balanced conditions, capacitances are formed between the conductors and ground. The voltage across these capacitances is the phase voltage
If the function range switch is set at 200 vac what will the multimeter read if a measurement is made directly across both terminals of a blown fuse in a 120 vac line?
With the meter on the voltage scale you will read zero volts across the blown fuse. From the bottom terminal of the service switch fuse to ground you will read zero volts and from the top terminal of the service switch fuse to ground you will read 120 volts. The multimeter will read 0
What is virtual ground and virtual short circuit?
VIRTUAL GROUND:-1]If the non-inverting (+) terminal of OP-AMP is connected to ground, then due to the "virtual short" existing between the two input terminals, the inverting (-) terminal also be at ground potential. hence it is said to be as "virtual ground".2]similarly if the inverting (-) terminal is connected to ground, then the non- inverting (+) terminal will be at "virtual ground" potential.3]The concept of virtual ground has been used extensively for amplifier analysis, specially we use this concept in the inverting amplifier.VIRTUAL SHORT:-1] The input impedance (Ri) of an OP-AMP is ideally infinite. Hence current "I" flowing from one input terminal to the other will be zero.2] Thus the voltage drop across Ri will be zero and both input terminals will be at the same potential. In other words they are virtually shorted to each other.
How would you observe and measure the way the sun appears to move across the sky?
You could put a stake vertically in the ground and make a mark on the ground where the shadow of the top of the stake is throughout the day and year.
In ww1 why were the british told to walk across no man's land?
The British were told to walk across no man's land during WW1 because of the rough ground. Walking was safer than running along the ground.
How could you observe and measure the way the sun appears to move across the sky with out looking at the sun?
Put a stick in the ground and look at the changes in the direction and length of its shadow.
What happens to cold air as it sinks to the ground?
Fog appears when cold air sinks to the ground.
A raised road across low lying ground?
A raised road across low lying ground is called a causeway.
What is Water that doesn't soak into the ground or evaporate but flows across the ground but flows across earth surface is called?
Runoff
A jumper wire should be used to bridge the electrical ground across?
A jumper wire should use to bridge electrical ground across?
How the snakes moves?
they slither across the ground
What is the name of an animal that sometimes appears on February 2?
ground hog
What is the frost that appears on the grass in the winter?
Ground frost or hoar frost.
Does Pluto have flat ground?
As of Sept 2017, the surface has only been observed from orbit, but it appears that there is flat ground on Pluto.
What is a raised road across low lying ground?
A raised road across low lying ground is typically called an embankment or causeway. It is constructed to elevate the roadway above potential flooding or waterlogged areas. These structures help maintain access and prevent damage during periods of high water levels.
