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- Question
Which is the most widely used semiconductor?
Options- A. Copper
- B. Silicon
- C. Germanium
- D. All of the above
- E. None of the above
- Correct Answer
- Silicon
- 1. What is a negative ion?
Options- A. An atom that contains more electrons than neutrons
- B. An atom that contains more protons than neutrons
- C. An atom that contains more electrons than protons
- D. An atom that contains more protons than electrons
- E. None of the above Discuss
- 2. What is the turns ratio for the transformer specified in the above question?
Options- A. 10.738
- B. 0.707
- C. 1.5
- D. 0.575
- E. None of the above Discuss
- 3. A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?
Options- A. 90 Ohm - 101 ohm
- B. 90 Ohm - 110 ohm
- C. 98 Ohm - 100.1 ohm
- D. 99 Ohm - 102 ohm
- E. None of the above Discuss
- 4. The north pole of a magnet is the one:
Options- A. that has its molecules arranged in a random pattern
- B. that would be attracted to the earth's north magnetic pole
- C. that would be repelled by the south pole of another magnet
- D. that would be attracted to the earth's south magnetic pole
- E. None of the above Discuss
- 5. Voltage is
Options- A. The flow of charged particles through a material
- B. The smallest electrically charged particle
- C. Trie force that causes electrons to flow
- D. The number of free electrons in an atom
- E. None of the above Discuss
- 6. Which one of the following statements is true?
Options- A. Power dissipation of a pure inductor decreases with operating frequency
- B. Power dissipation of a pure inductor is at a maximum for dc source voltages
- C. Power dissipation of a pure inductor increases with operating frequency
- D. There is no meaningful relationship between the power dissipation of a pure inductor and its operating frequency
- E. None of the above Discuss
- 7. How much power is being dissipated by a 1000 W resistance that has 25 V applied to it?
Options- A. 0.24 W
- B. 0.625 W
- C. 80 W
- D. 325 kW
- E. None of the above Discuss
- 8. Current can flow through a normally open push button switch as long as:
Options- A. you are pressing the button
- B. you are not pressing the button
- C. its contact remain open
- D. its contact remain open
- E. None of the above Discuss
- 9. The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?
Options- A. 1750 mA
- B. 17.5 mA
- C. 175 mA
- D. 1.75 mA
- E. None of the above Discuss
- 10. An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?
Options- A. Doping
- B. Valence electrons
- C. Free electrons
- D. Thermal energy
- E. None of the above Discuss
Electronic Principles problems
Search Results
Correct Answer: An atom that contains more electrons than protons
Correct Answer: 0.707
Correct Answer: 90 Ohm - 110 ohm
Correct Answer: that would be attracted to the earth's north magnetic pole
Correct Answer: Trie force that causes electrons to flow
Correct Answer: There is no meaningful relationship between the power dissipation of a pure inductor and its operating frequency
Correct Answer: 0.625 W
Correct Answer: you are not pressing the button
Correct Answer: 17.5 mA
Correct Answer: Thermal energy
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