Question

Derive the relationship for the output voltage chnage assuming an
ideal capacitance across the load.

Answer #1

Draw the output load voltage, load current waveforms along with
ac source voltage of a fully
controlled bridge rectifier connected with inductive load with
firing angle α = 30°. Assume the
load current is continuous.

Does capacitance depend on how much voltage is applied across
it?
if you disconnect the battery and measure the voltage across
the capacitor plates. How do you compare this with the voltage when
the battery was connected?

The components of a buck boost converter are ideal. The output
voltage Vo is regulated at 15V while Vd is
varied between 8 – 40V, fs is 20kHz and C is
470uF.
a) Assuming that Po ? 2W, calculate Lmin that
will keep the converter operating in acontinuous conduction
mode.
b) Plot inductor voltage and current.

For resistors connected in series, what is the relationship
between the voltage drops across the resistors and the terminal
voltage?

Describe the relationship between the effective capacitance for
a series and parallel combination to the individual capacitance of
each capacitor. Derive the equations.

An electrical load of 20kVA with a power factor of 0.82
inductive operates with a voltage of 440 V and a frequency of 60
Hz. The impedance between the power supply and the load is (10 +
j50) mΩ. The voltage on that load is 440V, under these conditions
determine
(a) the voltage at the circuit's power supply;
(b) what are the losses in the feeder/power supply;
(c) what is the capacitance value that, when placed in parallel
with the...

A capacitor with an unknown capacitance is charged up to a
voltage of V1 = 14.3 V using a battery. The capacitor is then
disconnected from the battery, and the battery is taken away. This
capacitor is then connected to a second capacitor with terminal A
to terminal A, and terminal B to terminal B. The second capacitor
has a capacitance of C2 = 8.16 mF. This second capacitor didn’t
have any electric charge on it before the connections were...

By showing proper working, derive that the output voltage of a
3-phase, 6-pulse full-wave converter system is: Vout = 1.654Vm cos
?, where ? is the firing angle and Vm is the phase voltage.

A balanced Y-connected 50Hz three-phase source has phase voltage
? ?=400V. Each phase of the load consists of a 0.1-farad
capacitance series with a 50-Ω Find the line currents, and the line
voltages. Assuming that the phase angle of ??? is 5.

What would happen if a capacitor load is attached to a constant
voltage source? What happens if they're both ideal? What if only
the current source is ideal? What if only the capacitor is ideal?
How will different capacitor types and values respond? How do these
scenarios change if the voltage source is changed to a current
source?

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