I need solutions to the question a) only, please.
For the system shown below where each labeled box indicates a valve that is normally open:
(a) Draw a fault tree for the top event "no flow out of the system."
(b) Find the minimal cutsets
(c) Find the exact top event probability using the b...

1. FIGURE 1 shows the block diagram of a superhetrodyne radio receiver. In a test a 20 V signal was fed from the aerial into the first stage of the receiver, a radio frequency amplifier. This signal is then passed through several stages of the receiver to eventually appear at the input to the AM...

Show all logic/work/sources leading up to the conclusions drawn for each problem.
1. One simplified model of a forward conducting Silicon diode's behaviour is to consider the diode to be equivalent to a series combination of a low resistance, a 0.7V fixed voltage source, and an ideal diode. Exp...

Attached is a drawing showing the block diagram of the control of an electric heating system. The heater is driven from a voltage-controlled power supply, the voltage V1 being derived from a potentiometer. The output temperature, 0 degree, is subject to disturbances, 0D, because of changes in the am...

The attached drawing shows a proportional plus derivative controller that has a
proportional band of 20% and a derivative action time of 0.1 minutes.
Construct the shape of the output waveform for the triangular
input waveform shown, if the input rises and falls at the rate of 4 units
per minute...

(a) State the type of motor starter circuit shown in FIGURE 2(a) (see attached file).
(b) The ends of the motor stator coils are shown as U1 and U2, V1and V2 and W1 and W2
Referring to FIGURE 2(b) (see attached file), sketch the connections of the windings between the contactors C1 and C3 for st...

A 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. W...

1. For a discrete-time signal x[n] with the z-Transform X(z) = z/(8z^2-2z-1), find the z-Transform, V(z) for the signal v[n] = x[n] * x[n].
2. Compute the unit-pulse response h[n] for the discrete-time system y[n+2]2y[n+1]+y[n]=x[n] (for n = 0, 1, 2, 3).
3. Compute the z-transform of t...

"Divide by 3 clock with 50% duty cycle" is the most commonly asked ASIC design question.
This solution gives a simple design in which only 1 counter is required which works only on positive edge of the clock.
In 4 easy steps, one will have a divide by 3 clock with 50% duty cycle.

1. A continuous time signal x(t) has the Fourier transform X(ω) = 1/(jω+b) where b is a constant. Determine the Fourier transform for v(t) = t^2 x(t).
2. A continuous time signal x(t) has the Fourier transform X(ω) = 1/(jω+b) where b is a constant. Determine the Fourier transform f...

Figure 5.14 (in the attachment) shows a sequence of grant operations for a specific access right on a table. Assume that at t = 70, B revokes the access right from C. Using the conventions defined in Section 5.2, show the resulting diagram of access right dependencies.

A simplified model of ADC noise refers the noise to a noisy input source resistance Rn while assuming the rest of the signal path to be noiseless. Attached Figure represents a particular 18-bit ADC that has a 10V input voltage range. The ADC has a bandwidth of 1 MHz. Calculate the maximum value of R...

As a rule of thumb, the perceived noise from a source falls by 6 dBA with every doubling of the distance from the source. If a 1 MW wind turbine (FIGURE) produces 103 dBA of noise within one metre of its base, estimate the distance from the turbine at which the noise can be reckoned to have fallen b...

FIGURE 1 shows the block diagram of a superhetrodyne radio receiver. In a test a 20 uV signal was fed from the aerial into the first stage of the receiver, a radio frequency amplifier. This signal is the passed through several stages of the receiver to eventually appear at the input to the AM detect...

Question 1
Harmonic distortion is aserious problem for the electrical supply industry
and can cause overheating of induction motors and transformers and
cause the neutral conductor to carry more than its rated current
Harmonic distortion is caused by consumer loads requiring non-
sinusoidal c...

A microwave radio link operates over a bandwidth of 400 MHz at C band. The link carries a number of channels of data using FDMA. Each channel has an RF bandwidth of 36 MHz and 4 MHz guard bands are needed between channels.
a. What is the maximum number of channels that the link can carry?
b. ...

A hard disk contains four Platters. Each side of the platter is coated with a magnetic oxide, allowing data to be stored on it. The platters are 3.5 inches in diameter. If the hard disk has a capacity of 800 GB and 80% of the platter surface is used for data storage, what is the bit density per squa...

a. A DSSS-CDMA signal has a chip sequence that is 10,000 chips in length. The sequence repeats every millisecond. What is the chip rate?
b. What is the message signal rate of the signal in part (a) above?
c. The transmitter and receiver for the signal in part (a) above are both station...

A radio network is set up with 50 mobile transmit-receive units and a central hub station.The network has ten RF channels for transmissions to the mobile units and ten RF channels for transmissions from the mobile units to the central hub. The network operates in the uhf band.The hub station alloca...

a. A cable TV company delivers video signals over coaxial cable to individual houses. Video signals occupy a bandwidth of 6 MHz and are stacked in frequency from 50 MHz to 656 MHz without guard bands. There are 100 video channels numbered 1 through 100. Is this system using FDM or FDMA?
b. When...

A radio receiver for the AM broadcast band covers the frequency range 550 to 1600 kHz. The IF frequency is 455 kHz and the local oscillator is above the received signal frequency.
a. What is the frequency range for the local oscillator of the AM radio?
b. The AM radio is tuned to a weak si...

A radio receiver is tuned to an FM station at 93.7 MHz. (That means the carrier frequency is 93.7 MHz and sidebands extend each side of the carrier). The bandwidth of the FM signal is 180 kHz. The receiver has an IF amplifier with a center frequency of 10.7 MHz.
The signal from the radio's ant...

Please see the attached file on a Two port network. I have attached examples of study topics. Please show detailed work of the questions with narratives to show development and transposition of formula where required so I can follow and learn a fully worked out example. Please include all calculat...

A) In comparing the behaviour of an n-channel MOSFET with a p-channel device having identical geometry and threshold voltage, it is found that the n-channel FET has a greater drain current than that of the p-channel FET. State why this should be so and give one other characteristic in which the two ...

FIGURE 1 shows a single-stage JFET amplifier circuit. The n-channel JFET has the ratings and characteristics given in the table below.
Show that the quiescent gate-to-source voltage is given by:
V_GSQ = 2.57 - I_DQR_S
Determine the maximum quiescent drain current and drain-to-source voltage o...

For a lossless line:
The characteristic impedance is given by Zo=sqrt(L/C) and the velocity of propagation by Vp=1/(sqrt(L*C))
Where L and C are, respectively, the line's inductance and capacitance per metre length.
A transmission line is formed by two identical parallel tracks in a printed circu...