fbpx
Breaking News
Home » Power System (page 5)

Power System

Advantages of Power factor improvement and Correction

 Advantages of Power factor improvement and Correction: Following are the merits and benefits of improvedPower factor; Increase in efficiency of system and devices Low Voltage Drop Reduction in size of a conductor and cable which reduces cost of the Cooper An Increase in available power Line Losses (Copper Losses) I2R is reduced Appropriate Size of Electrical Machines (Transformer, Generators etc) …

Read More »

Causes of low Power Factor

  Causes of low Power Factor The main cause of low Power factor is Inductive Load. As in pure inductive circuit, Current lags 90° from Voltage, this large difference of phase angle between current and voltage causes zero power factor. Basically, all those circuit having Capacitance and inductance (except resonance circuit (or Tune Circuit) where inductive reactance = capacitive reactance …

Read More »

Power Factor improvement Methods with Their advantages & Disadvantages

Power Factor Improvement Methods with their advantages and disadvantages

Methods for Power Factor Improvement The following devices and equipment are used for Power Factor Improvement. Static Capacitor Synchronous Condenser Phase Advancer 1. Static Capacitor We know that most of the industries and power system loads are inductive that take lagging current which decrease the system power factor (See Disadvantages of Low Power factor) . For Power factor improvement purpose, …

Read More »

Power Factor Library

  Power Factor Power Factor Active, Reactive, Apparent and Complex Power. Simple explanation with formulas.  Causes of low Power Factor Disadvantages of Low Power Factor Power Factor improvement Methods with Their advantages & Disadvantages Advantages of Power factor improvement and Correction   How to Calculate the Suitable Capacitor Size in Farads & kVAR for Power factor Improvement (Easiest way ever)  …

Read More »

Power System Library

Power System Library Electric Power System – Generation, Transmission & Distribution of Electricity and Elements of Distribution System (a complete note with diagrams) Comparison between AC and DC Transmission System ( With their advantages and disadvantages) Active, Reactive, Apparent and Complex Power. Simple explanation with formulas. What is the difference between real ground and virtual ground? Causes of low Power …

Read More »

Disadvantages of Low Power Factor

 Power factor play an important role in AC circuits and power dissipation depends on this factor. For instant, we know that; Power in a Three Phase AC Circuit = P = √3 V x I CosФ And Current in a Three Phase AC Circuits = I = P / (3 V x CosФ) I ∝1 /CosФ….… (1) Also, Power in …

Read More »

Power System MCQs with Explanatory Answers

Power System MCQs with Explanatory Answers (Generation, Transmission and Distribution  MCQs with Explanatory Answers ) 1. Volume of The Conductor is inversely proportional to the ____________. Voltage (V) Half of the Voltage (½ V) Squire of the Voltage (V2) None of the above   2.  Which among these is not a conventional source of electrical energy? Wind Gas Coal Diesel …

Read More »

Prove that Volume of The conductor is Inversely proportional to the squire of Voltage ( Vol = 1/V2). And what is the effect of this relation on Transmission and Distribution System.

 Prove that Volume of The conductor is Inversely proportional to the squire of Voltage ( Vol = 1/V2). And what is the effect of this relation on Transmission and Distribution System. Power in Three Phase Circuits    P = √3 V I Cosθ   OR     I = P / √3 V Cos θ            (1) Law’s of resistance =                 R = ρ …

Read More »