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at no load and rated volatge, the speed is 1200rom, and the armature curnt is 3ampere. at fullload and rated volatge ,the line curent is 47 ampere and bcuz of aarmature reaction the fluc is 4% less
Design and realize a digital LP filter using the bi-linear transformation method to satisfy the following characteristics: a- monotonic stopband and passband. b- -3.01dB cutoff frequency of o.5pi r
A particle with a charge of +5.5*10^-6 C sets up an electric filed. A second particle with a charge of -3.0*10^-6 C is moved to a point 4.2 m a way from the first charge. what is the electric field
A coil of wire contains 50 square turns, each one 5 cm long and 3 cm wide, and has a current of 30 A running through it. it is placed inside a magnetic field of 0.55 T at a 60 degree angle. what is
Consider a circuit that is connected to a phasor of 120V/0 degrees. The circuit feeds a 10 ohm resistor on the "hot" lead and then the circuit branches. One branch sees a 0.5A /60 degree phasor curr
Design a common collector circuit using a npn silicon transistor having Beta=90 with Vcc=20 V The desired Q-point is Vce=14V and Ie=2mA
When using current mirrors as current amplifiers, a dc current source is often included on both the input side and the output side of the current mirror. What is the purpose of these dc current sour
Consider a cylindrical cavity of diameter D=100 mm and depth L=50 mm whose sidewall and bottom are diffuse and gray with an emissivity of .6 and are at a uniform temperature of 1500 K. The top of th
Design a Mealy circuit has two inputs, X and Y, and two outputs, Z and W. If the two inputs are 0 at the previous clock rising-edge and then 1 at the next clock rising-edge, then an output Z = 1 (el
A temperature sensor produces 10 mV for each degree Fahrenheit. Determine the error in temperature reading if 20 mV of noise is added to the sensor output signal when the temperature is 70 degrees.
A toroid is fille with liquid oxygen that has a magnetic susceptibility of 4*10^-3. The toroid has 2000 turns and carries a current of 15 A. Its mean radius is 20 cm, and the radius of its cross sec
There is a current of 10 A in a resistor that is connected in series with a parallel plate capacitor. The plates of the capacitor have an area of 0.5m^2, and no dielecric exists between the plates.
A long cylindrical wire has a radius equal to 2 cm and carries a current of 80 A uniformly distruibuted over its cross-sectional area. Find the magnetic energy per unit length within the wire.
A conducting rod of length L rotates at constant angular speed w about one end, in a plane perpendicular to uniform magnetic field B. (a.) Show that the potential difference between the ends of the
When an RLC series circuit is connected to a 120 V rms, 60 Hz line, the rms current in the circuit is 11 A and this current leads the line voltage by 45 degrees. (a) Find the average power supplied
a. Identify which doping level was intended for the emitter, for the base, and for the collector. b. Assuming the intrinsic carrier concentration (ni) in silicon to be 1010cm-3, calculate the Fermi
A pn junction diode is reverse-biased when 5V of an external voltage is applied to the p-side of the diode while the n-side is grounded If two pn junction diode are connected in series pointing each
Obtain a timing diagram for a positive-edge-triggered JK master-slave flip-flop during four clock pulses. Show the timing diagrams for C, J, K, Q and Q'. Assume that before the first pulse: output Q
Design a differential amplifier using BJT's to provide a differential gain of 65. The bias current source should be 2.5 mA. Follow the fully differential amplifier with a differential input single e
Calculate the probability of drawing 3 10 k resistors from a box of 500 resistors, where 495 are 100 k resistors and 5 are 10 k . Use your results from part (a) and (e) to find this probability. How
Design a basic pacemaker circuit in PSPICE/LTSPICE using a 555 timer, switching transistor and a RC pulse output circuit. Report your design, schematic, input and output waveforms and design rationa
A car is traveling on a street at 24.6 m/s. An ambulance is behind the car, moving in the same direction and with a speed of 38.7 m/s. The siren on the ambulance is emitting sound at a frequency of
A block of copper has a volume of 5.5x10-3 m3 and a mass of 50.0 kg. The specific heat capacity of copper is 385 J/(kgC0). The melting point of copper is 1085 0C. The latent heat of fusion is Lf = 2
When played, it produces a sound of 196 Hz. The wavelength of the wave on the guitar string is 1.28 m. A) What is the tension in the string B) If a speaker is using 25 W of power to produce the soun
You are flying in an ultra-light aircraft at a speed of 49.8 m/s. An eagle, whose speed is 16.0 m/s, is flying directly toward you. Each of the given speeds is relative to the ground. The eagle emit