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Two loads are in parallel with a 1.2kV sinusoidal source. Load 1absorbs 60 kVAR at 0.6 leading power factor. Load 2 draws 90 kW at0.707 lagging power factor.
A) How would i find the complex power in polar form?B)How to i calculate the overall power factor?C) How to find the magnitude of the current from the 1.2kVsource?
Electrons in silicon carbide have a mobility of 1000 cm^2/V-sec. At what value of the electric field do the electrons reach a velocity of 3 X 10^7 cm/s Assume that the movility is constant and independent of the elctric field.
Consider a circuit consisting of a sinusoidal source V s (t) = cos (t) u (t) volts connected in series to a resistor R and an inductor L and assume they have been connected for a very long time. Let r = 0Ohm and L = 1 H.
A circuit is required in order to control a network of switches. The circuit has four inputs: three of the switches are normal on/off switches while the fourth switch is an enable switch for the entire circuit. The circuit should have the followin..
The excess charge in a certain medium decreases to one-third its initial value in 20s. (a) If the conductivity of the medium is10^(4)S/m, what is the dielectric constant of the medium(b) What is the relaxation time
How a transformer works and apply those rules to a transformer where the primary core cross-sectional area is twice.
Consider a multimode silica fiber that has a core refractive index of n1 = 1.48 and cladding index n2 = 1.46. Find the critical angle, numerical aperture and the acceptance angle.
Derive the relationship between the voltage across the 1 resistor and the magnetic intensity, H. Hint: explore the relationship between magnetomotive force and magnetic intensity as discussed in the overview.
The solution to Power Factor, Two single-phase loads are connected in parallel across a 415 V, 50 Hz supply. One load is rated 130 kW at a power factor of 0.75
A radio receiver has antenna noise temperature of 3000 K and equivalent noise temperature of 7000 K for its feeder and amplifier cascade. It requires Eb/No = 15 dB to provide Probability of error of 10^-15 (using BPSK).
1. An AM signal has an unmodulated carrier voltage VC = 10VP, a load resistance of RL = 10, and a modulation index of m = 1. 2. You are tuned to an AM station at 1200 KHz. Write down the frequency components of the received AM signal.
What is the total power density and total available current density between wavelength of 280 and 1240 nm for the AM0 and AM1.5 spectra. Assume each photon generates on electron-hole pair. You will need AM1.5 and AM1.0 spectra.
The ABCD constants of a three-phase, 345-kV transmission line are A = D = 0:98182 + j0:0012447. The line delivers 400 MVA at 0.8 lagging power factor at 345 kV. Determine the sending end quantities, voltage regulation, and transmission efficiency.
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