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ENGR2130Chapter1ReadingHomework

Completion
Complete each statement.
 

 1. 

______________ engineering is an wxciting and challenging profession for anyone who has a genuine interest in, and aptitude for, applied science and mathematics.
 

 

 2. 

__________ engineering is the profession concerned with systems that produce, transmit, and measure electric signals.
 

 

 3. 

__________ systems are electrical systems that generate, transmit, and distribute information.
 

 

 4. 

___________ systems use electric signals to process information ranging from word processing to mathematical computations.
 

 

 5. 

Control systems use electric signals to _________ processes.
 

 

 6. 

Power systems generate and _________ electric power.
 

 

 7. 

Signal-processing systems act on electric signals that represent ____________.
 

 

 8. 

Considerable _____________ takes place amoung the engineering disciplines involved in designing and operating these five classes of systems.
 

 

 9. 

An _________ circuit is a mathematical model that approximates the behavior of an actual electrical system.
 

 

 10. 

Note that the term electric circuit is commonly used to refer to an actual electrical _________ as well as to the model that represents it.
 

 

 11. 

Three basic assumptions ________ us to use circuit theory, rather than electromagnetic field theory, to study a physical system represented by an electric circuit.
 

 

 12. 

Electrical effects happen instantaneously __________ a system.
 

 

 13. 

The net charge on every component in the system is always _____.
 

 

 14. 

There is no magnetic coupling between the components in a _________.
 

 

 15. 

The wavelength l (lamda) is the velocity divided by the _________ rate, or frequency, of the signal; that is l=c/f.
 

 

 16. 

The frequency f is measured in ________ (Hz).
 

 

 17. 

Power systems in the united states operte at ____ Hz.
 

 

 18. 

A commonlly used mathematical model for electrical systems is a ________ model.
 

 

 19. 

The elements that comprise the circuit model are called _______ circuit components.
 

 

 20. 

The physical ____________ is an actual electrical system, constructed from actual electrical components.
 

 

 21. 

The concept of ________ charge is the basis for describing all electrical phenomena.
 

 

 22. 

The charge is bipolar, meaning that electrical effects are described in terms of ________ and negative charges.
 

 

 23. 

The electric __________ exists in discrete quantities, which are integral multiples of the elctronic charge, co023-1.jpg.
 

 

 24. 

Electrical effects are attributed to both the ___________ of charge and charges in motion.
 

 

 25. 

Voltage is the energy per unit ________ created by the separation.  We express this ratio in differential form as co025-1.jpg.
 

 

 26. 

The rate of charge flow is known as the electric _________, which is expressed a co026-1.jpg.
 

 

 27. 

The following picture shows an _______ basic circuit element.

co027-1.jpg
 

 

 28. 

We use the word _____ to imply that a basic circuit element does not exist as a realizable physical component.
 

 

 29. 

We use the word basic to imply that the circuit element cannot be further ________ or subdivided into other elements.
 

 

 30. 

The most widely used sign convention applied to these references is call the _______ sign convention.
 

 

 31. 

Whenever the reference direction for the currnet in an element is in the direction of the reference voltage drop across the element, use a ___________ sign in any expression that relates the voltage to the current.  Otherwise use a negative sign.
 

 

 32. 

Power is the time rate of expending or absorbing _________.
 

 

 33. 

Mathematically, energy per unit time is expressed in the form of a ________, or co033-1.jpg.
 

 

 34. 

Power associated with a basic circuit element is simply the product of the current in the element and the _________ across the element.
 

 

 35. 

If the power is positive (that is, if p>0), power is being __________ to the circuit inside the box.
 

 

 36. 

If the power is negative (that is, if p < 0), power is being __________ from the circuit inside the box.
 

 

Matching
 
 
Read through the 6 Problem Solving steps in your book  match the steps.
a.
Step 1
d.
Step 4
b.
Step 2
e.
Step 5
c.
Step 3
f.
Step 6
 

 37. 

Think of several solution methods and decide on a way of choosing among them.
 

 38. 

Test your solution.
 

 39. 

Use your creativity.
 

 40. 

Identify what’s given and what’s to be found.
 

 41. 

Calculate a solution.
 

 42. 

Sketch a circuit diagram or other visual model.
 



 
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