Reference no: EM13919898
PROBLEMS-
1. Define the voltage reflection coefficient.
2. Originally, the voltage is zero over the entire length of the transmission line. At t = 0 the switch closes. Find the voltage waveforms at A and B.
3. (a) Originally, the voltage is zero over the entire length of the transmission line. At time t = 0 the switch closes. Find the voltage waveforms at A and B.
(b) If the load ZR is removed such that an open-circuit condition results at point B, what would the new voltage waveforms be at A and B?
4. The following voltage waveform is seen on an oscilloscope connected to the input of a length of faulted RG8A/U line. Determine the fault location (from the sending end) and the fault impedance. Ignore any losses.
5. The following waveforms are observed at an oscilloscope connected to the input of a cable loaded with unknown impedance.
6. The voltage waveform (see Fig. P2-6) is seen on a time-domain reflectometer (RG = 50 Ω) connected to a shorted section of coaxial cable.
(a) If the dielectric material is Teflon (εr = 2.1), determine the length of cable.
(b) Calculate the characteristic impedance of the cable. (Assume no losses.)
7. The voltage waveform (see Fig. P2-7) is seen on a time-domain reflectometer (RG = 50 Ω) connected to an open section of coaxial cable. If the dielectric material is polystyrene (εr = 2.5), determine the:
(a) Length of the cable.
(b) Characteristic impedance of the cable. (Assume no losses.)
8. The following voltage waveform is seen on an oscilloscope connected to the input of a length of faulted open-wire line. Determine the fault location (from the sending end) and the fault resistance. The characteristic impedance of the line is 50 Ω.
9. For the configuration shown, find the time t1 on the oscilloscope display and calculate the value of the resistor Rx.
|
How is commercial paper used to raise short-term funds
: Briefly describe each of the following techniques for managing inventory:ABC system, economic order quantity (EOQ) model, just-in-time (JIT) system, and computerized systems for resource control?MRP, MRP II, and ERP.
|
|
Acceptability risk of a customer
: Change always face reluctance, the new product will be subject to the acceptability risk of a customer.
|
|
Credit ratings reproduced
: Analyzing Debt Terms, Yields, Prices, and Credit Ratings Reproduced below is the debt footnote from the 2013 10-K report of Dell Inc.
|
|
Business continuity and disaster recovery planning models
: Compare and Contrast various Business Continuity & Disaster Recovery Planning models.
|
|
Find the voltage waveforms
: Originally, the voltage is zero over the entire length of the transmission line. At t = 0 the switch closes. Find the voltage waveforms at A and B
|
|
How do the terms data knowledge and information differ
: How do the terms data, knowledge, and information differ? Which major categories of information with relevance for business market research exist?
|
|
What are the risks and rewards associated with just-in-time
: What are the risks and rewards associated with Just-in-Time (JIT) supply chain activities? How can a company buffer the operational risks associated with JIT inventory?
|
|
Form of budgeting and its advantages and disadvantages
: There are several approaches that may be used to develop the budget. Managers typically prefer an approach known as participative budgeting. Discuss this form of budgeting and identify its advantages and disadvantages.
|
|
What are some practical limits to economies of scale
: Is it possible to achieve zero inventories? Why or why not? Why does JIT manufacturing require a stable schedule? What are some technological advances that support the goals of JIT? Will JIT work in service environments? Why or why not?
|