Midterm Review AOS

3.14 Given the data stream 1110010100, sketch the transmitted sequence of pulses for each of the following line codes: (a) Unipolar nonreturn-to-zero (b) Polar nonreturn-to-zero (c) Unipolar return-to-zero (d) Bipolar return-to-zero (e) Manchester code

6.a. What type of cable installation is typically used in industrial facilities?A. Aerial onlyB. Buried onlyC. Buried and aerialD. Industrial facilities don't use cable installations.6.b. Which type of fiber is used in a standard FDDI network?A. OM3 or OM4 at 850 nmB. OM1 at 1,550 nmC. OM2 at 1,310 nmD. OM1 at 1,310 nm

Short-answer Question)How does a CPLD differ from an SPLD?

6. Determine the diameter in inches and in millimeters of circular cables having cross-sectional areas as given below. (Assume the cables to be solid conductors.) a. 250 CM b. 1000 CM c. 250 MCM d. 750 MCM *Round off to 4 decimal digits

What are the advantages of using CDMA for a cellular network?

A cable TV company was interested in making its operation more efficient by cutting down on the distance between service calls while still maintaining at least the same level of service quality. A treatment group of 18 repairpersons was assigned to a dispatcher who monitored all the incoming requests for cable repairs and then provided a service strategy for that day’s work orders. A control group of 18 repairpersons was to perform their work in a normal fashion—that is, by providing service in roughly a sequential order as requests for repairs were received. The average daily mileages for the 36 repairpersons are recorded in the table below. a. What are the populations of interest in this study?b. What is the level of significance of your test?c. Is there significant evidence that the treatment group had a smaller average daily mileage than the control group? Use α = 0.05

A wind farm is being built on an island 6km offshore and needs to be connected to the power grid substation 12km down shore before it can become operational. The cost of laying cable under water is $10,000/km, and the cost of laying cable on land is $8,000/km. a) Determine the cable route that will minimize cost.   b) What is the minimum cost

(c) Draw a circuit diagram to represent a TN-C-S earthing system and briefly explain its advantages and disadvantages.   (d) Briefly explain how to estimate the height of air termination of a lightning protection system network using the rolling sphere method and protection angle method. (e) Briefly explain what is meant by Ground Potential Rise (GPR) and explain why an animal like cow would not be adequately protected against GPR.   Note : answer all or else dnt attempt the question

How to verify the validity of the nodal analysis technique in solving electrical networks?

So-called "structured premises wiring systems" are defined in standards published by ____. A. National Electrical Manufacturer's Association (NEMA)B. Underwriters Laboratories Inc. (UL)C. Institute of Electrical and Electronics Engineers (IEEE)D. Electronic Industries Association/Telecommunications Industry Association(EIA/TIA)

Explain why line codes are used? Draw appropriate diagrams to illustrate the (a) following signalling systems: unipolar RZ (Return-to-Zero), polar NRZ (Non- Return-to-Zero) and bipolar. (b) What are the two types of repeaters used on multi-hop links? Draw a diagram for each repeater type indicating the signal and noise levels at each hop. Define the probability of error for each type after m-hops.

Give four challenges and suggest solutions for those challenges in wireline operations.

i. What are equipments used for dynamic voltage regulation in PST2200 Simulator. ii. Why voltage regulation is important in Transmission lines? Explain. i. Voltage regulation may be negative for inductive load !!

Discuss in points the parameters affecting the total number of cells in cellular systems.

To provide two or more voice circuits with the same carrier, it is necessary o use the ________________ a. B8E b. A3E c. C3F d. J3E

"A 75-ohm load terminates a 50-ohm transmission line. The point of reflection is at the load. If the measured incident voltage at the point of reflection is 10 Vrms, what is the total voltage at the load? Enter only the numerical value. No need for the unit. Use four decimal places (if the answer is not an integer)."

what do we need to regulate voltage between sender and receiver? define the relation between turning capacitors value and phase angle between sender and receiver

New dishwasher circuits can be wired directly to NM cable. The circuit breaker is the disconnect. O No answer text provided O False No answer text provided. True

1/ Power loss due to corona is: a. Inversely proportional to frequency. b. Proportional to frequency. c. Frequency does not effect. d. All these answers are wrong. 2/ We prefer High voltage DC (HVDC) transmission system than High Voltage AC transmission system according to the cost, when: a. The distance of the line is more than B00 km. b. The distance of the line is less than 300 km. c. The distance of the line is equal to 300 km. d. All the above answers are wrong. 3/ HVDC Transmission has lower corona losses than HVAC Transmission because: a. HVDC Transmission tower is less height than HVAC Transmission tower. b. HVDC Transmission system work with zero frequency than HVAC Transmission system of 50 Hz. c. HVDC Transmission currents is uniform distributed in the all cross section of the system conductors than HVAC Transmission due to skin effect. d. All of the above answers are wright.

Any one could help me?

Q3: An overhead transmission line conductor having two un sale level towers, the height of taller tower 91.8 m and the original point ('O 'point) located between the towers. Let point A located between taller tower and original point ( 'O' point) with vertical distance between this point and ground is 40 m and the horizontal distance between point A and original point ('O' point) is 120 m . If location of mid-point between the point A and original point with vertical distance above ground is 35 m.The weigh 20 N/m and tension on conductor is 20000 N Find: The horizontal distance between towers, the height of lowest tower and vertical distance between of mid-point and original point ('O' point).

What are two advantages of using twisted pair cabling over coaxial cabling on a network? a. Twisted pair cable is more reliable. b. Twisted pair cable is less expensive. c. Twisted pair cable is more resistant to noise. d. Twisted pair cable is more resistant to physical damage. e. Twisted pair cable is required for modern transmission standards.

Discuss the challenges and solutions related to "crosstalk" in high-density cabling systems.

Fill in the blank: Due to the electromegnatic isloation it is possible we can install the transmission line with the electrical conductive cables.

How do circuit breakers improve the resilience of service interactions in distributed systems?

Question 7