- What is Q factor Class 12?
- How do you know if power factor is leading or lagging?
- What happens when power factor high?
- What is the formula for power factor?
- What does Q factor mean?
- What is power factor in 3 phase?
- What is lagging power factor?
- What is Q factor in physics?
- How do you fix leading power factor?
- What will happen when power factor is leading in distribution of power?
- Can power factor be more than 1?
- What is the power factor on my electric bill?
- Why is the power factor not more than unity?
- What is the condition of resonance?
- What is the reciprocal of quality factor?
- How do I calculate KVA?
- What is Q factor in resonance?
- What is the correct power factor?
What is Q factor Class 12?
What is Q-factor.
Hint: The quality factor or ‘Q’ is a dimensionless quantity that describes the nature of damping in a resonating circuit.
It is indeed the ratio of maximum energy stored in the circuit to the energy dissipated during each cycle of oscillation..
How do you know if power factor is leading or lagging?
If the currents leads the voltage (greater angle than voltage) then the power factor is leading (capacitive load). If the current lags the voltage (less angle than voltage) then the power factor is lagging (inductive load).
What happens when power factor high?
A high power factor reduces the load on transformers and distribution equipment. A high power factor decreases the I2R losses in transformers, distribution cable, and other equipment, resulting in a direct saving of kilowatt-hour power consumption. A high power factor helps stabilize the system voltage.
What is the formula for power factor?
It is found by multiplying (kVA = V x A). The result is expressed as kVA units. PF expresses the ratio of true power used in a circuit to the apparent power delivered to the circuit. A 96% power factor demonstrates more efficiency than a 75% power factor.
What does Q factor mean?
quality factorIn physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. … Q factor is alternatively defined as the ratio of a resonator’s centre frequency to its bandwidth when subject to an oscillating driving force.
What is power factor in 3 phase?
The power factor in a single-phase circuit (or balanced three-phase circuit) can be measured with the wattmeter-ammeter-voltmeter method, where the power in watts is divided by the product of measured voltage and current. The power factor of a balanced polyphase circuit is the same as that of any phase.
What is lagging power factor?
A lagging power factor denotes that on the phasor diagram, the current lags (is behind) the voltage, and a leading power factor denotes that the current leads (is ahead) the voltage. For inductive loads (e.g. induction motors, coils, lamps), the current lags behind the voltage, thus having a lagging power factor.
What is Q factor in physics?
In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how under-damped an oscillator or resonator is, or equivalently, characterizes a resonator’s bandwidth relative to its center frequency.
How do you fix leading power factor?
This is called “leading power factor”. Power factor correction is the method to reduce the lagging power factor in inductive loads by fixing a high value capacitor across the phase and neutral close to the load. These capacitors have leading power factor so that it will neutralize the lagging power factor of the load.
What will happen when power factor is leading in distribution of power?
When the power factor is leading, the capacitive kVAr is more than the Inductive kVAr and this still has to be supplied by the source. As kVA is the vector sum of kW and kVAr, still for the given kW, you have to produce more kVA. Alternately, for the given kVA, you can only convert partially into useful work.
Can power factor be more than 1?
Since power factor is a cosine function of the relative phase angle between current and voltage there are no possible values greater than one. … A power factor of one is achieved when the voltage and current are in phase and there’s no reactive power.
What is the power factor on my electric bill?
Power factor refers to the ability of your electrical system to convert electric current into useful work such as heat, light, and mechanical motion. The ratio of real power to total power is called power factor, and your equipment is performing best when that ratio is between 90% and 100%. …
Why is the power factor not more than unity?
Answer: Power factor is the cosine of the phase angle between voltage and current. If we look at the other definition of power factor it is the ratio of true power to the apparent power. … True power may be equal to apparent power but cannot exceed. So that is why power factor can not more than unity.
What is the condition of resonance?
CONDITION FOR RESONANCE : Resonance occur only when the frequency of applied force is exactly equal to the natural frequency of the vibration of body and the applied force cause force vibration in the body .
What is the reciprocal of quality factor?
Quality factor (Q) or coil Q-factor is a dimensionless unit for the losses of a coil, quartz, or a resonator. … The reciprocal value of quality is the loss factor (d).
How do I calculate KVA?
Use the formula: P(KVA) = (V^2/R)/1000 where R is resistance in ohms. For example, if V is 120 volts and R is 50 ohms, P(KVA) = V^2/R/1000 = (14400/50)/1000 = 288/1000 = 0.288 KVA.
What is Q factor in resonance?
The Q, or quality, factor of a resonant circuit is a measure of the “goodness” or quality of a resonant circuit. … Q = Pstored/Pdissipated = I2X/I2R Q = X/R where: X = Capacitive or Inductive reactance at resonance R = Series resistance.
What is the correct power factor?
The ideal power factor is unity, or one. Anything less than one means that extra power is required to achieve the actual task at hand. All current flow causes losses both in the supply and distribution system. A load with a power factor of 1.0 results in the most efficient loading of the supply.