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Write a balance reaction equation for the complete combution of carbon in air. What are the mass and mole fraction of fuel, air oxygen and notrogen in the reactants?
The charge entering the positive terminal of an element is q = 10 sin 4 piet mC while the voltage across the element (plus to minus) is v = 2 cos 4 pie t V. (a) Find the power delivered to the element at t = 0.3 s.
1. A MOD 8 down-counter is holding the count 101 (base-2). What will the cound be after seven clock pulses 2. A MOD 5 and a MOD 20 counter are cascaded. What is the output frequency if the input frequency is 60MHz
A NEMA design B, 3-phase, 60 Hz, Induction motor is rated: 60 HP, 460V, 71A, 93.0% efficiency, NEMA code G, 1180 RPM: A. What is the power factor of the motor B. What is power factor of the motor when operating at 1/2 load
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
Then find the total energy stored in the battery before it is connected to the bulb. Determine the total amount of charge that has pessed through the wires that connect the battery and the bulb.
Analysing harmonic content of ac voltage waveforms, An a.c. voltage, V, comprises of a fundamental voltage of 100 V rms at a frequency of 120 Hz, a 3rd harmonic which is 20% of the fundamental
Why do you think we need both rectangular and polar forms. There still seems to be some confusion about the relationship between R, Xc, OR XI and the phase angle. Take a value for R and a value for XC that is ten times smaller than R and find the..
an amplifier with an input resistance 10kohm, when drieven by current source 1microA and a source resistance 100kohm has a short circuit output current of 10mA and an open circuit voltage of 10 V. The device is driving a 4kohm load.
A sinusoidal voltage has a maximum value of 100V, and the value is 10V at t=0. The period is T=1ms. Determine v(t)
A three phase synchronous motor has the synchronous reactance of 2.1 Ohm and draws 250 A with a lagging power factor for an excitation voltage of 1327 -15 degree per phase. Find the terminal voltage of the motor and power factor of the motor.
Transmitting data at higher speeds generally requires a wider bandwidth, which is not always possible within FCC guidelines. In addition to the wider bandwidth, higher speed transmission also requires a higher transmit power. Why
Determine the minimum signal to noise ratio (s/n) in dB required in each communication channel to achieve a data rate of 270 kbps?
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