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Assume a piecewise linear model for the diode has a cut-in voltage of 0.7V and a forward resistance , rf, of zero. Determine the ripple voltage, Vr, for each of the following capacitors : 1μF, 10μF,100μF for a following a half wave rectifier.
The stator frequency of an induction machine is 50 Hz and the rotor circuit frequency is 5 Hz. What is the rotating speed in rpm for a 4-pole induction machine
Calculate the energy required to change the arrival time of a near earth object of mass 10,000 MT by a distance equal to the diameter of Earth using laser ablation. Assume an ejection velocity of the material at 10,000 m/sec.
Through a three-phase transmission line, a three phase symmetrical load is supplied from a power system bus. The parameters per phase of the transmission line are: R=5 ohms, X=70 ohms, B=9*10^-4 ohms.
What is the clearance requirement for a 120/240 V, single-phase, three-wire service at the point of attachment to the building Over the driveway Over the main roadway
Assuming that ideal filters are available, what is the lowest frequency at which the signal can be sampled and subsequently recovered in its analog form without distortion using a low pass filter?
A 5-volt intelligence amplitude causes the frequency to change to ± 25 kHz. What will be the carrier frequency variation corresponding to an intelligence amplitude of 10 volts
Build a home security system circuit using this program. The system must include a door sensor,window sensor, smoke detector, water leak sensor, a motion detector.
A solar cell is uniformly illuminated by monochromatic light of 700nm with power density of 20 mW/cm^2. What is the corresponding incident photon flux What is the upper limit to Jsc if the bandgap is 1.4eV
Two balanced Y-connected loads in parallel, one drawing 15 kW at 0.6 power factor lagging and the other drawing 10 kVA at 0.8 power factor leading, are supplied by a balanced, three-phase, 480-volt source.
Design a hand warmer with a heated element consisting of an encapsulated resistor to be held in your hand and powered by a 6V battery that you put in your coat pocket. Use 26 gauge wire to connect the resistor to the battery.
A wound-field dc motor is driving a load whose torque requirement increases linearly with speed and reaches 5 Nm at a speed of 1,400 rpm. The armature terminal voltage is held to its rated value.
Without any external voltage what is the electric field direction within each junction Are the diffusion currents in the two junctions from E to B and B to C
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