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Convert the following differential equation 5 (t) +4 (t) +3x.(t) + 2x(t) + 7u(t) - 5u.(t) + 2 (t) = 0 to state space form. Is this system marginally stable, asymptotically stable, or unstable when u
A band filter has the following specs: Center frequency: 1500 Hz Bandwidth: 200Hz Chebyshev filter with a passband ripple of 1 dB 20-dB attenuation of te stopband gains at 1200 HZ and 1800 HZ. Determi
A three 480V system is connected to a balanced three-phase load. The line current I_a is 10A and is in phase with the line-to-line voltage V_bc. Calculate the impedanceof the load for the following
A student acquires a 50mV, 1mA (meter-A) and a 50mV , 2mA (Meter-b) d'arsonval movements and converts both the meters to measure 100v full scale individually. A potential divider consisting of 70k a
A 100-KVA, 2500/125-V, 50-Hz, step-down transformer has the following parameters: RH= 1.5 ohm ,XH= 2.8 ohm , RL=15 m omh XL = 2.m ohm, ,RcH=3 k ohm, XmH = 5k ohm. The transformer delivers 85% of the
A 10kVA, 200/400V 50Hz single-phase transformer gave the following test results. O/C test: 200V, 1.3A, 120W, on l.v. side. S/C test: 22V, 30A, 200W on h.v. side. (a) Calculate the magnetizing curren
PLL can be used to demodulate an FM signal. If you are tuned to an FM station at a frequency of 101.1 MHz, the free-running frequency of the VCO must be set to what frequency
The power supplied by a certain source is a constant 7.5 W over the first 5.8 min, zero for the next 2.8 min, a value that increases linearly from zero to 10 W during the next 8.8 min, and a value t
A simple power system consists of a dc generator connected to a load center via a transmission line. The load resistance is 8 ohms. The transmission line is 40km copper wire of 4 cm diameter. If the
What is the frequency for a periodic signal with a period of 2.5 ns 2.5 GHz 250 MHz 4.0 GHZ 400 MHz 2. Which decimal number is equivalent to 25 10 25 31 32 3. Convert the following decimal negative
A signal contains a mixture 30 , 100 and 240 Hz Sine waves and also contains wideband noise whose spectrum is from 500 Hz up to a 1000 Hz. Describe a filtering technique that can be used to cleanly
The motor resistance is 0.5ohm and the magnetic circuit may be assumed unsaturated. What will be the speed if: (i) the load torque is increased by 44%, (ii) the motor current is 10A
A parallel-plate capacitor is charged to a potential V0, charge Q0 and then disconnected from the battery. The separation of the plates is then halved. What happens to (a) the charge on the plates
A 100V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.25 ohm. The motor runs at a speed of 600 rev/min when the shaft torque is 27.14 Nm. Friction and windage losses
A 230V shunt motor having an armature resistance of 0.05 W and a field resistance of 75 W draws a line current of 7 A while running light at 1120 rev/min. The line current at a given load is 46 A.
A 220V dc series motor runs at 700 rev/min when operating at its full-load current of 20A. The motor resistance is 0.5W and the magnetic circuit may be assumed unsaturated. What will be the speed if
The received power at a receiver antenna is -38 dBm. If the system impedance is 50 Ohms, what is the voltage at the receiver antenna. What is the total average power for a commercial AM transmitter w
What is the path attenuation between transmitter and receiver at a frequency of 1.2 GHz and a distance of 11,000. Given: f = 1.2GHz d = 11,000 mi. Calculate the path attenuation; dB = 37dB + 20 log
The boards have a weight of 40 lb, centered G. Determine the smallest angle Theta required for the man to support these boards, neglecting the man's weight and the friction between his shoes and th
Consider a series RL circuit with a voltage source. Take the output as the voltage across the resistor with L = 2 henrys and R = 4 ohms. (a) Find the zero input response as a function of time. The i
A load consists of a resistance R in parallel with a capacitor of reactance X. The load is fed from a single phase supply through a line of impedance 8.4 + j11.2 ohms. The rms voltage at the load te
Delta load Assume that the load is delta connected. Each phase has a series RL load with R = 5 ohms and L = 20 mH. Plot the phase to phase voltage (Vab) versus time for one cycle. Hint: Vab = Va - V
Open Neutral Assume that the load is star connected with the neutral disconnected. Each phase has a series RL load with R = 5 ohms and L = 20 mH. Plot the neutral voltage Plot the phase to neutral v