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Q is the I 2 *X or Reactive power measured in volt-amperes reactive, VAr; S is the I 2 *Z or Apparent power measured in volt-amperes, VA; Φ is the phase angle in degrees. The larger the phase angle, the greater the reactive power; Cos(Φ) = P/S = W/VA = power factor, p.f. Sin(Φ) = Q/S = VAr/VA; Tan(Φ) = Q/P = VAr/W
- Reactive Power. We know that reactive loads such as inductors and capacitors dissipate zero power, yet the fact that they drop voltage and draw current gives the deceptive impression that they actually do dissipate power.
- True Power. The actual amount of power being used, or dissipated, in a circuit is called true power, and it is measured in watts (symbolized by the capital letter P, as always).
- Apparent Power. The combination of reactive power and true power is called apparent power, and it is the product of a circuit’s voltage and current, without reference to phase angle.
- Calculating for Reactive, True, or Apparent Power. As a rule, true power is a function of a circuit’s dissipative elements, usually resistances (R). Reactive power is a function of a circuit’s reactance (X).
What is Apparent Power: (S) Apparent Power Formulas: What is Complex Power ? (S = P+jQ or S=VI*) Complex Power Formulas: Complex Power in Capacitive Loads. Complex Power in Inductive Loads. Good to know: Power Triangle. Role of Active Power and Reactive Power. Rating of Voltage Controller at Your Home: What is Active Power: (P)
Class X Sample Question Paper & Marking Scheme for Exam 2021-22. Subject. Term 1. Term 2. Sample Question Paper. Marking Scheme. Sample Question Paper. Marking Scheme. Science.
S.NO. MA RKS 1 2 3Let a and b be two positive integers such that a = p3q4 and b = p q , where p and q are prime numbers. If HCF(a,b) = pmqn and LCM(a,b) = prqs, then (m+n)(r+s)= (a) 15 (b) 30 (c) 35 (d) 72 Let p be a prime number. The quadratic equation having its 1 2 roots as factors of p is
Class X Sample Question Paper & Marking Scheme for Exam 2022-23. Subject. Sample Question Paper. Marking Scheme. Science. SQP. MS. Elements of Book Keeping and Accountancy.
In the diagram, P is the active power, Q is the reactive power (in this case positive), S is the complex power and the length of S is the apparent power. Reactive power does not do any work, so it is represented as the imaginary axis of the vector diagram.
