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A two-legged core is shown in Figure. The winding on the left leg of the core (N1) has 400 turns, and the winding on the right (N2) has 300 turns. The coils are wound in the directions shown in the figure.
If the dimension are as shown, then what flux would be produced by currents i1 =0.5 A and i2 =0.75 A?
Assume u = 1000 and constant.
Two machines and a lighting load are connected in parallel to a 220 V, 60 Hz line. The first machine uses 40 kW of power at 0.81 power factor lagging. The second machine uses 27 kVA at 0.93 power factor leading. The lighting load consumes 13 kW.
The following functions describe the oscillations in electric circuits and the vibrations of machines and structures. Plot these functions on the same plot. Because they are similar decide how best to plot and label them to avoid confusion.
A TV signal (Audio and Video) has bandwidth of 4.5 MHz. The signal is sampled,quantized and binary-coded to obtain PCM signal. (a) Determine the sampling rate if the signal is to be sampled at a rate 20% above the Nyquist rate.
A full wave center-tapped transformer rectifier ina power supply provides an average dc output voltage of 14V onwhich a maximum ripple of ±0.5 volt is allowed. Diodeshave a 0.7 Volt drop when conducting. Assuming a resistive load of120 ohm
How much charge is stored in a 5uF capacitor connected across a 70V supply and For a constant supply voltage and an increasing value of capacitance, what is the effect on the amount of charge (Q)? Explain your reasoning.
A lighting load operates from a 208-V 60-Hz supply and is rated 1.0 kW with a power factor of 0.9 lagging. A 40-µF capacitor is connected in parallel with this load. Calculate the total power factor and the percent change in line current.
What is the capacitance ratio for the capacitors with Ta2O5 and oxide/nitride/oxide dielectrics for the same thickness, provided the oxide/nitride/oxide has thickness ratio 1:1:1 for the oxide to the nitride.
- Describe in your own words, what "the tarp" or "the landscape" represents - what do the hills and valleys convey
The paper includes Lithium ion battery technology with its advantages and disadvantages. The paper discusses about the Lithium air battery in which detailed reactions of Lithium with air including nonaqueous as well as aqueous are given.
average velocity of v meters/second. If the concentration of free electrons is 10^{29} electrons per cubic meter and if they are uniformly dispersed throughout the wire, then what is the average velocity of an electron
Bit 4 of Port B is connected to a switch that normally outputs a zero. Monitor this switch to detect a change from zero to one. Immediately when it becomes one, call a function to toggle Bit 5 of Port B, which is connected to an LED.
any noise will pass straight through to the ADC subsystem, introducing measurement error. You have two choices to mitigate this: SW filtering and HW filtering. Either way around, you need a HW anti-aliasing (low pass) filter following the output.
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