What would you like to do?

# What is the Difference between nominal voltage and operating voltage?

# Why is it not good to operate a transformer above its nominal voltage?

Overexcited Transformer. Operation above the rated supply voltage causes the ferromagnetic core to enter saturation; this means that the primary inductance is reduced and s…ince the primary current is limited by primary resistance +inductance then the primary current will increase and possibly cause the primary winding current capacity to be exceeded. Also the iron core hysteresis loss will likely increase and cause the core temperature to rise. We have not considered eddy currents in the core, probably these are less than the hysteresis core loss. Addition: also the stresses that caused by increasing the voltage will over heat the transformer by mean the life time is redused, for example: if the life time for a transformer is 20 years this number will decrease due to operating the transformer on a higher voltages than the rated...

# What is nominal voltage?

It is the rated voltage of an electric equipment. It is the voltage at which the device is designed to operate. Another Answer Nominal means 'named'. So a nominal voltage is …the 'named' voltage. For example, the nominal voltage of the supply system in Britain is 230 V. But its actual value is allowed to vary between 216.2 V and 253.0 V.

# What is the difference between voltage and current?

Voltage . . . the difference in electrical 'pressure' between two points, that makes electrons want to move from the higher-pressure point to the lower-pressure point if th…ere's something in between the two points for them to move through. Under normal circumstances, there can easily be this difference in 'pressure' between two points, but no electrons are moving across, because there's nothing for them to move through. For example, there is substantial voltage between the two slots in a household electrical outlet, but no way for electrons to move from one to the other, until you plug something into the outlet that provides a path. If the difference in pressure is great enough, then the electrons lose all reasoning power and are consumed by an insane desire to make the trip even if there's nothing there for them to move through, and they jump from one point to the other one anyway. That's when you see a spark, or lightning. Current . . . When there's a path between the two points, then the electrons take off and move from one point to the other. As long as the voltage is there, more and more electrons step up and make the crossing. Current is simply the measurement of how heavy the traffic is on the path ... how many electrons pass any point on the path every second. If there happen to be about 6,241,000,000,000,000,000 electrons passing by in each second, then we say that the current is "1 Ampere". Greater current can be caused by either one of two conditions: -- Greater voltage between the two points, inspiring more electrons to make the trip. -- A path made of material that's easier for the electrons to travel in, such as silver or copper ... the reason that electrical wiring is most often copper wire.

# What is difference between voltage and current?

Voltage . . . the 'pressure' between two points that makes electrons 'want' to move from one of the points to the other one. More pressure is called more 'volts'. Curren…t . . . the flow of electrons between those two points, IF there's something in the space that the electrons are able to flow through. More current is called more Amperes (or 'amps'). The amount of current depends on how strong the voltage is, AND on what the electrons are flowing through in order to get across the space. (That's called the 'resistance' between the two points. More resistance is called more 'ohms'. More ohms means it's harder for the electrons to get across the space, and the result of that is ... less current.) Comment It's also worth pointing out that current is only a flow of electrons in (mainly) metal conductors. In other conductors, such as electrolytes, a current is a flow of ions (charged atoms) rather than electrons -sometimes different types of ions flowing in opposite directions to each other at the same time. A more general definition of current, therefore, would be 'a flow of charge carriers'.

# What is the different between voltage and current?

current is nothing but flow of electic charges through a particular area.it is denoted by I.its unit is ampere. V=IR by ohms law. voltage Voltage is the potential energy t…hat makes the electrical current flow in a circuit by pushing the electrons around. The unit of voltage is volt shown as 'v'.

# What is the difference between current and voltage?

Voltage is the cause and current is its effect. Voltage is the potential difference between two points. When charges flow due to this potential difference, we say that current… is flowing. Voltage and current can be compared to a water reservoir with tubes connected to the outlet, the reservoir is the supply. Now, voltage is compared to the pressure of the water at the outlet of the reservoir, and current compared to the the volume of the water that flows through the tubes, the thicker and shorter the tubes, the less the resistance and larger the volume of water passing through the tubes. To measure voltage, a volt meter is connected across the output terminals of the supply; to measure current (in units of amperes), one of the wires connecting a circuit to to the supply is cut, and a ammeter is connected to the two ends; or if there is a switch in the circuit it can be switched off, and the current can be measured across the terminals of the switch. The best way to measure current is by using a clamp type ammeter. Voltage (sometimes called electric potential difference) is the electrical driving force set up by an electric potential difference. There are several ways to create an electric potential difference, but in any case, it is voltage that causes current flow if there is some kind of circuit or current path to support the flow. Current or current flow is the actual movement of electrons through the branches of a circuit when voltage (the "motivational force" that causes current flow) is applied. ---

# What is the differences between current and voltage?

Think of voltage as a potential. A bunch of free electrons looking for someplace to go. The current is how they get there. If you think of a vat of water being a voltage and d…rilled a hole in the bottom the current would be the water flowing through the hole. The bigger the hole the higher the current (less resistance to the flow).

# What is the difference between EMF and voltage?

E.M.F: Is the potential difference between two terminals when there is no current i.e. circuit is open, therefore [EMF = OCV]. OCV :open circuit voltage. Voltage: Is the po…tential difference between two terminals when there is current i.e. closed loop An e.m.f. (electromotive force) is a voltage or, more accurately, a potential difference ('voltage' is simply another word for 'potential difference'). However, it is the potential difference that appears across the terminals of a supply when it is not connected to its load. When the supply is connected to a load, this potential difference falls because of an internal voltage drop across the supply's internal resistance. So the simple answer is that an electromotive force is a supply's open-circuit terminal voltage. Another definition is obtained from Kirchhoff's Voltage Law, from which we can say that an electromotive force is equal to the sum of all the all the voltage drops around the circuit, including its internal voltage drops.

# What is the difference between voltage and amperage?

Voltage is the "pressure" of electricity, whereas amperage (current) is the "flow" of electricity. Voltage can be present without amperage (at a switch in the off position), b…ut amperage can not exist without voltage. Once you flip the switch and the light turns on, you now have amperage. Voltage is measure in volts (E). Current is measured in amperes (I). Related terms would be Power and Resistance. Power (P) is measured in watts. Resistance is measured in ohms (R). P = I x E E = I x R

# Difference between voltage and emf?

'Voltage' is simply another term for 'potential difference', and an electromotive force is the open-circuit, or no-load, potential difference of a source such as a battery or …generator.

# What is difference between nominal and terminal voltage?

The rated voltage of a motor listed on the nameplate is called the terminal voltage. This indicates the actual voltage on the motors terminals at which at which the manufactur…er designed to operate. Whereas, Nominal voltage is the design or configuration voltage of the electricity distribution system.

# What is the difference between voltage and signals?

That's a pretty good question. In computers a change in voltage level is usually the data signal. There are many industrial applications where a change in current i…s used as a signal. In fact ANY change in voltage or current can be used. Data signals are very weak (high impedance) compared to power supply voltage and currents.

Answered

In Technology

# Difference between current and voltage?

current:- the flow of electron or charge in conductor is called current. Voltage:- the potential difference of two point is called voltage

Answered

# What is the difference between voltage and resistance?

A voltage is a term and use from elcotromacer and a resistane can have a certain relationship with a voltage. if You would like to now the difference, here is a great website …to help and locate your question: see related links

The question and answer are locked and cannot be edited.

Answered

In Technology

# What is the difference between energy and voltage?

Answer Voltage is (potential energy). Answer Energy is the amount of work that the electrical current can perform... total watts. Voltage …is just a potential. An electric spark can jump a distance through air, and the distance is determined by voltage. A full description would take quite a bit of time and space on this web site, but some physics or other science books can certainly give an adequate description of the relationship between Volts, Amps and Watts, and give meaning to the formula: Volts X Amps = Watts

Answered

In Technology

# What is difference between retarding voltage and a voltage?

A retarding voltage is what causes the electronic to shut down.

Answered

# What is the difference between voltage and watts?

Voltage is electrical pressureWatts is power, the product of voltage and amperage Answer 'Voltage' is another word for 'potential difference', which is measured in volts…. It is the potential difference across a circuit that causes current to flow through that circuit. The watt is the SI unit of measurement for power. Power is a measure of the rate at which a load consumes energy, and is equivalent to a joule per second.