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1. A 30 mA current source with an internal resistance ( R S ) of 300 ? is connec

ID: 2988875 • Letter: 1

Question

1. A 30 mA current source with an internal resistance (RS) of 300 ? is connected to a 600 ? load (RL). The voltage drop across the load (VL) is

8 V

12 V

6 V

3 V

2. A 15-V voltage source has an internal resistance (RS) of 80 ?. The equivalent current source produces

18.8 mA

5.33 mA

120 mA

188 mA

3. The load analysis of a circuit is an analysis that provides a means of predicting how the circuit will respond to a change in load

power

voltage

current

resistance

4. Thevenin's theorem states that any resistive circuit or network can be represented as a

current source in series with a source voltage

current source in series with a source resistance

voltage source in series with a source resistance

voltage source in series with a loop resistance

5. A 12-V voltage source with an internal resistance of 100 ? is connected to a 20 ? load. The Norton current (IN) is

120 mA

600 mA

100 mA

1 A

6. If a magnet has eight lines of force, the magnetic flux is given as

8 Wb

8 SI

8 ?Wb

8 Mx

7. If an iron bar has a value of ?r = 500, and the flux density in the space surrounding the bar equals 5 10-3 T, the flux density within the iron bar is

5 T

500 T

25 T

2.5 T

8. Materials that have high permeability are known as

paramagnetic

diamagnetic

triomagnetic

ferromagnetic

9. A coil with 140 turns, carrying 40 mA has

7.2 A ? t

7,200 A ? t

5.6 A ? t

5,600 A ? t

10. Flux density is

A. also known as permeability

B. measured in units of Maxwells

C. measured in units of Webers

D. a measure of the number of lines of magnetic force per unit area

A.

8 V

B.

12 V

C.

6 V

D.

3 V

Explanation / Answer

1 : OPTION C

2 .OPTION D

3 OPTION D

4 OPTION C

5. OPTION A

6 . OPTION A

7 OPTION D

8 OPTION D

9 OPTION C

10 OPTION D