Contents
- 1 Why is it in a purely resistive circuit power is always positive?
- 2 When an AC supply is connected to a pure resistor Why is the power produced always positive?
- 3 What happens in a pure resistive circuit?
- 4 What is the relationship of voltage and current in a pure resistive circuit?
- 5 What is power consumed in a pure inductor?
- 6 How is AC applied across a pure resistor?
- 7 How is the current dissipated in a resistive circuit?
- 8 Which is the simplest type of AC resistive circuit?
Why is it in a purely resistive circuit power is always positive?
It is seen from the power curve for purely resistive circuit no part of power cycle becomes negative at any time i.e. in the purely resistive circuit power is never zero. This is so because instantaneous values of voltage and current are always either positive or negative and hence the product is always positive.
When an AC supply is connected to a pure resistor Why is the power produced always positive?
Because instantaneous power is the product of the instantaneous voltage and the instantaneous current (p=ie), the power equals zero whenever the instantaneous current or voltage is zero. Whenever the instantaneous current and voltage are both positive (above the line), the power is positive.
What are the power consumed in a purely resistive circuit?
In a purely resistive circuit, the current and voltage are both in-phase and all the electrical power is consumed by the resistance, usually as heat. As a result, none of the electrical power is returned back to the source supply or circuit.
What happens in a pure resistive circuit?
A purely resistive circuit is a circuit that has inductance so small that at its typical frequency, its reactance is insignificant as compared to its resistance. Furthermore, in a purely resistive circuit, the whole of the utilized voltage is consumed in overcoming the ohmic resistance of the circuit itself.
What is the relationship of voltage and current in a pure resistive circuit?
In the purely resistive circuit, the power is dissipated by the resistors and the phase of the voltage and current remains same i.e., both the voltage and current reach their maximum value at the same time. The resistor is the passive device which neither produce nor consume electric power.
How many types of power can be defined in an AC circuit?
Explanation: In an AC circuit, we can define three types of power, namely, Instantaneous power, Average power, and Apparent power.
What is power consumed in a pure inductor?
Thus, the average energy dissipated per cycle in an ideal inductor is zero. Therefore, the correct option is D. i.e., Zero.
How is AC applied across a pure resistor?
AC Applied Across a Pure Resistor In this, a pure resistance is connected to the AC supply source which is equivalent to the circuit that supplies the AC power to a resistor or a lamp or a heater or any other resistive load. It is the simplest type of AC circuit that doesn’t have any inductance or capacitance.
What kind of circuit has a purely resistive load?
Consider a circuit for a single-phase AC power system, where a 120 volt, 60 Hz AC voltage source is delivering power to a resistive load: (Figure below) Ac source drives a purely resistive load.
How is the current dissipated in a resistive circuit?
In the purely resistive circuit, the power is dissipated by the resistors and the phase of the voltage and current remains same i.e., both the voltage and current reach their maximum value at the same time. The resistor is the passive device which neither produce nor consume electric power.
Which is the simplest type of AC resistive circuit?
In this, a pure resistance is connected to the AC supply source which is equivalent to the circuit that supplies the AC power to a resistor or a lamp or a heater or any other resistive load. It is the simplest type of AC circuit that doesn’t have any inductance or capacitance.