Electronic Principles – Section 2

31. What is the barrier potential of a silicon diode at room temperature?

A. 0.7V
B. 0.3V
C. 1 V
D. 2 m V per degree Celsius
E. None of the above

Correct Answer:  A. 0.7V

32. The Norton current is sometimes called the

A. Shorted-load current
B. Open-load current
C. Thevenin current
D. Thevenin voltage
E. None of the above

Correct Answer:  A. Shorted-load current

33. At room temperature a conductor has low many holes?

A. Same number as free electrons
B. many
C. Only those produced by thermal energy
D. less than the free electrons
E. None of the above

Correct Answer:  A. Same number as free electrons

34. A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff?

A. 2 k Ohm
B. 10 k Ohm
C. 20 k Ohm
D. 1 k Ohm
E. None of the above

Correct Answer:  D. 1 k Ohm

35. When the Q point moves along the load line, the voltage increases when the current

A. Decreases
B. Stays the same
C. Increases
D. Can be any of above
E. None of the above

Correct Answer:  C. Increases

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