Likewise, when **Voltage** decrement decrement **transformer**, currently **Increase** proportionally.Therefore, if **Voltage** Halve, double the current.In other words, the power is equal to **Voltage** times the current.One **transformer** Transfer electrical energy from the primary coil to the secondary coil.

What is the use of a step-up and step-down transformer for this?

One **transformer** Increasing the voltage from primary to secondary (with more turns in the secondary than in the primary) is called **step**–**upper transformer**. Instead, a **transformer** designed to do the opposite is called **step**–**lower transformer**.

## Why does the current decrease when the voltage increases?

it says **current** inversely proportional to **Voltage** If the power remains the same.As we know, in **transformer**, if the power remains the same, and **voltage increase**, Then **current reduction** in strengthening **transformer**. Also **voltage drop** When **current increase** like stepping down **transformer**.

## Why does voltage increase current?

Ohm’s law states that electric **current** (I) Flow in the circuit with **Voltage** (V) is inversely proportional to resistance (R).Therefore, if **Voltage** Yes **Increase**, This **current** will **Increase** provide the resistance of the circuit **Do** no change.

## What happens to the current when the voltage is reduced?

Ohm’s law states that electric **current** (I) Flow in the circuit with **Voltage** (V) is inversely proportional to resistance (R).Therefore, if **Voltage** increase, then **current** As long as the resistance of the circuit does not change, it will increase.

## Why is the efficiency of the transformer not 100%?

For credit rating, you should be able to explain why **transformer** Yes **not 100**% **Efficient**. This is because **no** All incoming electrical energy is converted to electrical energy at the output. There is some heat generation, and a little sound— **transformer** Get hot and buzz!

## What is the turns ratio of the transformer?

A transformer with 1000 turns of primary and 100 turns of secondary has a turns ratio of 1000:100 or **10:1**. Therefore, a voltage of 100 volts applied to the primary will produce a secondary voltage of 10 volts.

## What is Back EMF in a Transformer?

a change.The magnetic field inside the coil will (according to Lenz’s law) induce **electromagnetic field** in that opposing coil. A change in current that produces a change in the magnetic field, so the opposite. The direction of the applied voltage (opposite sign).This **electromagnetic field** called”**Counter electromotive force**” or vback.

## What is the ratio of the transformer?

**ratio** Is **ratio** secondary voltage to primary voltage and equal to **ratio** The ratio of the number of turns of the secondary winding to the number of turns of the primary winding, if the leakage flux is ignored.

## Why is the core loss of a transformer always constant?

the reason behind **iron loss** exist **continuous** Is it lag? **loss** and eddy current **loss** Both depend on the magnetic properties of the materials used in construction and design **nuclear** of **transformer**. so these **loss** Yes **continuous** and does not depend on the value of the load current.

## What instrument is used to measure voltage?

Electricity meter

## Why can’t direct current be used in transformers?

One **transformer** need one **alternating current** This creates an ever-changing magnetic field. A changing magnetic field also induces a changing voltage in the coil.This **Is** based on how **transformer** Works: This results in **alternating current** (**alternating current**) in the circuit connected to the secondary coil.

## What does the turns ratio tell us about the transformer?

This **ratio** of **transformer** The primary and secondary windings generate a boost voltage with respect to each other **transformer** or step-down voltage **transformer** and **ratio** Between primary numbers **turn** to secondary **turn** is called”**turns ratio**” or”**ratio**“.

## What is the difference between a step-up transformer and a step-down transformer?

One **Step-down transformer** The secondary coil has fewer turns than the primary coil.The induced voltage on the secondary coil is less than the applied voltage on the primary coil or **exist** In other words, the voltage is “stepped-**down**“. **Transformers** high efficiency.

## What are the advantages of AC power over DC power?

Both AC and DC have power losses in long lines due to resistance in the wires.For fixed power, higher voltage results in **reduce** current through the power line, and **reduce** current means **reduce** Power cord loss.Early engineers realized the need for very high voltages **Efficient** power transmission.

## Why does an increase in current mean a decrease in voltage?

This equation, i = v/r, tells us **current**, i, the current flowing through the circuit and **Voltage**, v is inversely proportional to the resistance r.In other words, if we **Increase** This **Voltage**,So **current** will **Increase**. However, if we **Increase** resistance, then **current** will **reduce**.

## Why do we transmit electricity at high voltage?

**Electricity** Available to consumers via National Grid **very high voltage** reduce **vitality** loss during transmission.Transformers are used to increase or decrease **Voltage** supply. **Electricity** Charged in units.

## How does a current transformer work?

in principle.Fundamental **Current Transformer** same as power supply **transformer**. whenever alternating **current** It flows through the primary winding to generate an alternating magnetic flux, which induces an alternating **current** in the secondary winding.

## How does a step-up transformer increase the voltage?

One **transformer** That **increase voltage** From primary to secondary (the secondary winding has more turns than the primary winding) is called **step**–**upper transformer**. Instead, a **transformer** aimed at **Do** The exact opposite is called **step**-down **transformer**.

## What instrument can measure the amperage of current?

One **Electricity meter** is the instrument that indicates how many amps of current are flowing in a circuit. Amperage is a term used to describe the number of electrons that pass through a fixed point in a conductor in one second. Current is measured in units called amps or amperes.