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- Question
A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?
Options- A. 50 A
- B. 12 A
- C. 5 A
- D. 20 A
- E. None of the above
- Correct Answer
- 20 A
- 1. A device that converts thermal energy to electrical energy is called a:
Options- A. thermocouple
- B. solar cell
- C. chemical cell
- D. piezoelectric devices
- E. None of the above Discuss
- 2. A typical light switch in your home is a:
Options- A. knife switch
- B. toggle switch
- C. rotary switch
- D. momentary push button switch
- E. None of the above Discuss
- 3. What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz?
Options- A. 100 Ohm
- B. Less than 1 Ohm
- C. 628 Ohm
- D. 444 Ohm
- E. None of the above Discuss
- 4. Positive ions are atoms that have
Options- A. Gained a proton
- B. Lost a proton
- C. Gained an electron
- D. Lost an electron
- E. None of the above Discuss
- 5. If a load resistance is 1 kW, a stiff voltage source has a resistance of
Options- A. At least 10 Ohm
- B. less than 10 Ohm
- C. More than 100 k Ohm
- D. Less than 100 k Ohm
- E. None of the above Discuss
- 6. The valence electron of a copper atom experiences what kind of attraction toward the nucleus?
Options- A. Strong
- B. Neutral
- C. Weak
- D. Impossible to say
- E. None of the above Discuss
- 7. Which one of the following statements is true for the currents in a series RC circuit?
Options- A. The current always has the same amplitude and phase for every part of the circuit
- B. The total current is equal to the sum of the currents for the resistance and capacitance
- C. The total current is greater than the sum of the currents for the resistance and capacitance
- D. The total current is less than the sum of the currents for the resistance and capacitance
- E. None of the above Discuss
- 8. The south pole of a magnet is the one:
Options- A. that would be attracted to the earths north magnetic pole
- B. that has its molecules arranged in a random pattern
- C. that would be attracted to the earth's south magnetic pole
- D. that would be repelled by the north pole of another magnet
- E. None of the above Discuss
- 9. Absolute Zero temperature equals
Options- A. 0o C
- B. -273o C
- C. -276o C
- D. 25o C
- E. None of the above Discuss
- 10. Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold
Options- A. 220 Ohm, 5%
- B. 220 Ohm, 10%
- C. 22,000 Ohm, 5%
- D. 22, 000 Ohm, 10%
- E. None of the above Discuss
Electronic Principles problems
Search Results
Correct Answer: thermocouple
Correct Answer: toggle switch
Correct Answer: 628 Ohm
Correct Answer: Lost an electron
Correct Answer: less than 10 Ohm
Correct Answer: Weak
Correct Answer: The current always has the same amplitude and phase for every part of the circuit
Correct Answer: that would be attracted to the earth's south magnetic pole
Correct Answer: -273o C
Correct Answer: 22,000 Ohm, 5%
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