0
In a resistive load circuit, the power = multiplication of voltage and Current. By increasing the voltage power will not be increased. Power is defined by the load as per its design. If the voltage is higher the load current will reduce. However running a load at double the rated voltage is not good for the device. Insulation may fail.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
Why do you think as the voltage across a lamp changes the power consumption?
Because the power of a resistive component is directly proportional to the square of the voltage across that component.
What is the nature of power factor and its variation with firing angle when a single phase voltage controller feeds a resistive load?
With a pure resistive load the Power Factor should be 1.
How do you differentiate inductive loadcapacitive load resistive load which basics?
For an inductive load, the current lags the voltage by 90 degs. Hence the power factor for an inductive load is 0. For a capacitive load, the current leads the voltage by 90 degs. Hence the power factor for a capacitive load is 0. For a resistive load, the current and the voltage are in phase. Hence the power factor for a resistive load is 1.
When do you use Power Factor?
You use power factor when the load is not resistive, i.e. when it is reactive, and the phase angle between voltage and current is not zero.
Calulate kw FROM single-phase voltage and ampere?
Watts = Voltage X Amperes X Power Factor Power Factor = Cosine of the Angle between Voltage and Current For purely resistive circuits, Power in Watts = Voltage X Amperes Watts divided by 1000 = kiloWatts
Why do you think as the voltage across a lamp changes the power consumption?
Because the power of a resistive component is directly proportional to the square of the voltage across that component.
What is the nature of power factor and its variation with firing angle when a single phase voltage controller feeds a resistive load?
With a pure resistive load the Power Factor should be 1.
When an alternating voltage is applied to purely resistive circuit what happens?
When an alternating voltage is applied to a purely resistive circuit, the resulting current is in phase with the voltage.
How do you differentiate inductive loadcapacitive load resistive load which basics?
For an inductive load, the current lags the voltage by 90 degs. Hence the power factor for an inductive load is 0. For a capacitive load, the current leads the voltage by 90 degs. Hence the power factor for a capacitive load is 0. For a resistive load, the current and the voltage are in phase. Hence the power factor for a resistive load is 1.
When do you use Power Factor?
You use power factor when the load is not resistive, i.e. when it is reactive, and the phase angle between voltage and current is not zero.
Why power factor can not be unity?
Power factor can be unity. If the load is purely resistive, then the load current and supply voltage are in phase, and the load will have unity power factor.
Calulate kw FROM single-phase voltage and ampere?
Watts = Voltage X Amperes X Power Factor Power Factor = Cosine of the Angle between Voltage and Current For purely resistive circuits, Power in Watts = Voltage X Amperes Watts divided by 1000 = kiloWatts
What state is voltage and current simultaneously peak?
Voltage and current will peak simultaneously when the power factor is exactly +1 or -1. This only occurs with a resistive load or source.
What is the Difference between resistive and capacitive load?
when a resistive load is applied there is no phase angle difference between voltage and current. when a inductive load is applied there is phase difference between voltage and current. current lags voltage by an angle of 90 degrees for pure inductive load
What is open circuit voltage?
The voltage before it is hooked up to a resistive load.
What is the applied voltage to a resistive capacitive circuit?
this is the amount of voltage a circuit can hold.
What is the phase angle between voltage and current in a purely resistive circuit?
The phase angle between voltage and current in a purely resistive circuit is zero. Voltage and current are in phase with each other.
