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If you are referring to the voltage at your residence, then voltage variation is caused by the changes to the load on your supply network. The network load varies throughout the day, being busiest, for example, around lunchtime and around dinnertime. The resulting load current variation causes the supply voltage to vary (it drops when the load current increases) but, by law, your supplier is obliged to maintain any voltage variation within limits -in the UK, for example, these limits are between +10% and -6% of the nominal 230 V.
To increase or decrease speed of an object, a force is needed.
To increase or decrease speed of an object, a force is needed.
To increase or decrease speed of an object, a force is needed.
To increase or decrease speed of an object, a force is needed.
Force causes things to slow down or speed up. Slow down or speed up iinvolves acceleration which is the result of force, a=f/m.
To increase or decrease speed of an object, a force is needed.
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Does transformer doubles the power?
No. Power is constant. Transformers neither increase nor decrease power, except for minor losses. They increase or decrease voltage, and they decrease or increase current, but the product of voltage and current, i.e. power, remains the same.
When a battery runs out does the battery voltage increase decrease or stay the same?
It should decrease
What is the effect of low frequency on the voltage?
The frequency would decrease the gain and increase the output voltage
Why does the terminal voltage increase in leading load?
due to decrease in power factor
An increase in resistance in a circuit will cause?
In a simple circuit, lowering the voltage will not cause the resistance to do anything. Lowering the voltage will, however, cause the current to also lower.This ignores temperature coefficient. If there is substantial power involved, a typical bulb, for instance, will grow cooler and its resistance will decrease when you lower the voltage, but that is usually a small effect.
What is the name of the component that is used to increase or decrease alternating voltage?
A transformer is used to increase or decrease alternating voltage.
Why secondary terminal voltage decreases with increase in load?
An increase in load (equivalent to a decrease in resistance*) causes an increase in load current. This increases the internal voltage drop within the transformer, and the terminal voltage reduces accordingly.[*An increase in load means more current is being drawn by that load, so an increase in load is equivalent to a decrease in load resistance]
How do you decrease voltage?
Increase resistance
When are electromagnets used to increase or decrease the voltage of electric currents?
Electromagnets are never used to increase or decrease the voltage in a circuit. These magnets in conjunction with a rotating device (an armature) can create a voltage but the do not have any effect on a voltage.
Does transformer doubles the power?
No. Power is constant. Transformers neither increase nor decrease power, except for minor losses. They increase or decrease voltage, and they decrease or increase current, but the product of voltage and current, i.e. power, remains the same.
Should you increase voltage or resistance to increase flow in a circuit?
To increase (current) flow in a circuit you increase voltage (or decrease resistance). Ohm's Law: Current = Voltage divided by resistance
When a battery runs out does the battery voltage increase decrease or stay the same?
It should decrease
What causes static to increase and decrease?
no
WHAT IS THE function of transformers?
Mainly to increase or to decrease the incoming voltage
Does a step-down transformer increase its voltage and and decrease it's current?
No. A step-down transformer's secondary voltage is lower than its primary voltage. The secondary current is determined by the load, and this causes a higher current in the primary winding.
What is the effect of low frequency on the voltage?
The frequency would decrease the gain and increase the output voltage
When you turn on your hairdryer and the bathroom lights dim this is because of the increase in?
This is because of the increase in electrical current draw when the hairdryer is turned on, which causes a voltage drop in the circuit. The voltage drop results in the decrease in power available for the lights, leading to them dimming momentarily.
