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1- the depth of modulation of an AM waveform that reached a maximum amplitude of 20v and a minimum amplitude of 2.7 v could be expressed as approximatly :
a-3.1 %b-.76c-.13d-7.62%
2- if a carrier wave of 200 khz is amplitude modulated by an audio signal which has frequency components betwen 300 hz & 3,4 khz the lowest frequency component of the resulting DSP AM wave would be :
a-300 hzb-199.7 khzc-196.6 khzd-3.4 khz
3- a 10 khz sinsudal signal is used to amplitude modulate a sinsoidal carrier frequency of 50 khz the number of frequency components that would be included in the resulting DSP AM waveform would be :
a-5b-2c-3d-many hundreds
It requires the frequency resolution to be less than 0.5 Hz. Determine the number of data points used by the FFT algorithm and actual frequency resolution in Hz, assuming that the data samples are available for selecting the number of data points.
Three single-phase transformers are connected in a wye/delta configuration. Each single-phase transformer has an identical number of turns in the primary and secondary windings. If a line-to-line voltage of 480 V is applied on the wye windings
An LED is rated at VF = 1.6 Volts to 2.0 Volts at IF = 20 mA. What value of series resistance is needed to limit the LED current to 20 mA when this LED is connected to a 32 Volts peak source
Using this method, create and test a minority vote circuit, a circuit designed to indicate when one or no inputs are HIGH. Determine the appropriate SOP equations, enter, compile, simulate, download, and test your solution.
A charged particle (charge q, mass m) is moving under the influence of a magnetic field B = B0 az. If the velocity vector of the particle is v = v a ax +- vy ay + vx az Show that the acceleration of this particle lies in the x-y plane.
A dynamite blast at a quarry launches a rock straight upward, and 1.6 s later it is rising at a rate of 14 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.7 s after launch.
The Russian president and the Chinese counterpart need to come to an agreement by telephone. Neither can speak and understand each other's language. They need to employ translators. Compare this layered communication to OSI layers
(a) Find Cox and (b) For an NMOS transistor with W/L = 15 m/0.25 m, calculate the values of VOV , VGS, and VDSmin needed to operate the transistor in the saturation region with a dc current ID= 0.8mA.
Design an amplifier circuit which uses an OpAmp and is powered by dual 15 V power supplies, and which has the following characteristic at low frequencies: Vout = 3V1 - 5V2 1. State the information which is extracted from the equation.
A 460-V, four-pole, 75-hp, 60-Hz, Y connected, three phase induction motor develops its full load induced torque at 1.2 percent slip when operating at 60 Hz and 460 V. Find Tmax, Smax and rotor at maximum torque for this motor.
A 240kW 500 Volt 1750rpm separately excited dc generator has an overall efficiency of 94%. The shunt field resistance is 60ohms, and the rated current is 5amps. The I^2R loss in the armature is 0.023pu.
Design a load resistor (resistance rating and power rating) network to have the transformer operate at full load. Design a second network for half load. You may need to combine several resistors to get the desired value.
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