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Computer Science - Electronic Principles

Exercise : Electronic Principles - Section 3
41.
Which one of the following phrasers best describes flux density?
The concentration of lines of magnetic force
The rate of change of the number of lines of magnetic force
The opposition to a build-up of magnetic fields
The force that maintains lines of force
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Which is the most widely used semiconductor?
Copper
Silicon
Germanium
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?
1750 mA
17.5 mA
175 mA
1.75 mA
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?
Doping
Valence electrons
Free electrons
Thermal energy
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Which one of the following statements is true?
Power dissipation of a pure inductor decreases with operating frequency
Power dissipation of a pure inductor is at a maximum for dc source voltages
Power dissipation of a pure inductor increases with operating frequency
There is no meaningful relationship between the power dissipation of a pure inductor and its operating frequency
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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