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A single-phase circuit is placed across a 120-V rm, 60-Hz source, with an ammeter, a voltmeter, and a wattmeter connected. The instrucments indicate 12 A, 120 V, and 800 W, resppectively. Find (a) the power factor, (b) the phase angle, (c) the impedance, and (d) the resistance.
The switch in a RC circuit is closed. If the resistance is 134462ohms, the capacitance 7.5 microF, and the applied voltage 18 volts, what is the (average) rate of change of the voltage on the capacitor, to the nearest tenth of a V/s, during the fi..
Describe the steps in the keypad polling routine. Draw a flow chart for the keypad LCD software code. Discuss challenges experienced in developing the keypad LCD software code.
Assuming that only integer multiples of a unit bipolar transistor having IS = 3 x 10-16A can be placed in parallel, and only a single voltage source, VB, is available (Fig. 4.54), construct the required circuit with minimum number of unit transist..
Three two-input "AND" gates have their outputs connected to an "OR" gate. The first "AND" gate has each of its inputs at logic HIGH level. The second "AND" gate has each of it's inputs at logic LOW level.
A battery E (e.m.f 12v and internal resistance 0.8 ohms) and a resistor R1 (10 ohms) are connected in series across two parallel resistors (R2 = 12 ohms, R3 = 18 ohms). i) Draw the circuit diagram, determine the battery terminal voltage.
design a logic program that will track the activity for one turnstile. there will be three inputs PHASEA, B and RESET. there will be no output. the program should be able to track 999 total guests.
One of the biggest challenges with log systems, like the ones used for Intrusion Detection Systems data, is the amount of disk space that they require. For example, storing a message like: "User1 login success", contains 19 characters
How big will be rated power of the motor if starting current at star-connection and phase to phase voltage of the supply 380 V is (150+17) A. the ratio of starting current for motor is 7 Ir efficiency factor is 0.85 but cos f =0.8
Six input voltage sources (V1, V2, V3, V4, V5, V6) have a +/- 1 V range. Design a circuit to produce Vout as the most negative (smallest) of (V1 + 2V2), (V3 - 2V4), (-V5 - 2V6). Your design should specify exact components. Note that diode drop can..
Is there any advantage of star connection over delta w.r.t. induction motors? Also, is there any advantage or disadvantage of star connection over delta w.r.t. distribution and transmission of power? Please explain the reasons for all the advantag..
"Divide by 3 clock with 50% duty cycle" is the most commonly asked ASIC design question. This solution gives a simple design in which only 1 counter is required which works only on positive edge of the clock.
The wavelength of one particular emission of a certain galaxy has been shifted from 572 to 483 nm due to the Doppler effect. What is the radial speed of the galaxy relative to Earth
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