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Approximate the power spectrum of coherent M-ary FSK by adding voltage spectra of sinusoidal bursts of duration Tb and of the appropriate frequency coherently, and then plotting the magnitude squared. What is the minimum spacing of the ‘‘tones'' in order to maintain them coherently orthogonal?
a 9.1 v zener diode exhibits its nominal voltage at a test current of 28 mA . at this current the incremental resistance is specified as 5 ohms . find Vz0 of the zener model . find the zener voltage at a current of 10 mA and at 100 mA.
Find the time averaged output power of the generator in this circuit.
noncausal, linear, and time-invariant. Determine the impulse response for the system and verify that an LTI system defined by the impulse response you determined satisfies the difference equation.
Calculate resistance from the measured voltage and current values. Measure the resistance for the resistor in the circuit. Compare the measured resistance to the calculated value of resistance of the resistor.
Design a band-pass filter with a low cutoff frequency of 200 Hz, a high cutoff frequency of 1 kHz, and a pass-band gain of 4. Calculate the value of Q for the filter. Also, draw the approximate frequency response of this filter.
Two large flat charged plates are fixed parallel to one another in a large tank of distilled water (Er=81) with a total surface charge of 41.25×10-7 C on each plate (with opposite polarities). The plates are square, 4 m each side.
How do you take into account the potential difference between the plates?
Determine the location of the shear center O of a thin-walled beam of uniform thickness having the cross section shown.
It is decided to apply a Fast Hopping (FH) scheme on the above ASK system. The hopping is made over 12 channels of 100 kHz; or over 1.2 MHz bandwidth. The ASK signal hops 6 bands per bit period. Now a strong jammer randomly jams one of the 12 FH c..
A unity feedback control systems for a robot submarine has a plant with a third-order transfer function G(s) = K / (s(s + 10)(s +50)) We want the overshoot to be approximately 7.5% for a step input
A LSTTL gate has an IOL = 8 mA. How many standard TTL gates can this gate drive. The standard TTL gate has IIL = -1.6 mA
It is desired to run the motor in the previous problem with a power factor of unity. To achieve this, a capacitor C is connected in parallel across the motor, which results in a circuit like that shown in Fig. 2.13. Calculate the value of C to ach..
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