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An analog TV visual transmitter is tested by modulating it with a periodic test signal. The envelope of the transmitter output is viewed on an oscilloscope as shown in Fig. P8-46, where K is an unknown constant. The output of the transmitter is connected to a 50-? dummy load that has a calibrated average reading wattmeter. The wattmeter reads 6.9 kW. Find the PEP of the transmitter output.
A permanent magnet DC motor with a 10 ohms armature is stopped by dynamic braking. at operating speed, the counter EMF in the motor armature is 15 volts. What will be the peak current through the switch at the instant it shorts out the motor
Find the transformation ratio of a transformer having 350 turns on the secondary winding and 7000 turns on the primary. What voltage must be applied to the primary of the transformer to develop an open-circuit secondary voltage
In a bridge rectifier the transformer is connected to 220V, 60Hz mains and the turns ratio of the step down transformer is 11:1. Assuming the diode to be ideal, find: i) Idc
How to design the logic circuit for a room has three doors, with aswitch next to each door, and one over head light. A person shouldbe able to enter or exit from any door and turn the room light onor off by toggling the switch.
two particles are fixed to anhe par x axis ;particle 1 of charge -2.00*10^-7c at x=6.00cm and particle 2 of charge +2.00*10^-7 at x=21.0cm. midway of particles, what is their net electric field in vector notation
Understanding low, high and band pass filters, A signal in the IF section of an FM radio receiver occupies the frequency band 10.61 MHz to 10.79 MHz. Compute the bandwidth of this signal.
If natural gas use steadily increases by 6 percent every year and in 2009 the United States consumption of natural gas was 21 Quads, how much natural gas will be consumed annually in 12
Racecar A is traveling on a straight portion of the track while racecar B is traveling on a circular portion of the track. At the instant shown, the speed of A is increasing at the rate of 10 m/s2, and the speed of B is decreasing at the rate of 6..
1. Find the change in currents due to change of voltage by (a) 5mv,(b) -10mv, (c) 15mv using small signal model and exponential modelof diode with n= 1 and biased at 2mA. 2. A step up transformer has the turn ratio of 2:5
A steel wire 30 ft long, hanging vertically, supports a load of 500 lb. Neglecting the weight of the wire, determine the required diameter if the stress is not to exceed 20 ksi and the total elongation is not to exceed 0.20 in. Assume E = 29 × 106..
You are hired to design the front end of an imaging system for studying the boundary shapes of cells, bacteria, viruses, and protein.The front end consists, in this case, of the illumination source(s) and corresponding imaging camera(s).
The output response for a system is given as Vo(t) = A(1-e^-at)sin(ωt). Is this a proper representation for an output response given that it contains a sinusoidal term? Fully explain your answer.
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