what are the losses of capacitor??
Answer / kedam.koteswar
the losses in ac capacitors. All dielectrics (except vacuum) have
two types of losses. One is a conduction loss, representing the flow of actual charge through
the dielectric. The other is a dielectric loss due to movement or rotation of the atoms or
molecules in an alternating electric field. Dielectric losses in water are the reason for food and
drink getting hot in a microwave oven.
One way of describing dielectric losses is to consider the permittivity as a complex number
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air condition capacity for masjad having 50feet in circal and 35 feet high
1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.
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3 Answers College School Exams Tests, Crompton Greaves,
How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?
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