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- Question
How many connections does a potentiometer have?
Options- A. 1
- B. 2
- C. 3
- D. 4
- Correct Answer
- 3
ExplanationA potentiometer uses three connections, as opposed to a rheostat, which only employs two. Having three connections allows the potentiometer to vary voltage. Both the potentiometer and the rheostat are classified as variable resistors. - 1. A resistance temperature detector produces a voltage for a given change in temperature.
Options- A. True
- B. False Discuss
- 2. The sum of all the voltage drops in a series circuit equals the source voltage.
Options- A. True
- B. False Discuss
- 3. The magnetic field, current through the Hall element, and Hall voltage are all at right angles to each other.
Options- A. True
- B. False Discuss
- 4. In a series RLC circuit, at above resonance the circuit is more capacitive than it is inductive.
Options- A. True
- B. False Discuss
- 5. What is the product-over-sum result of 150 and 6800?
Options- A. 150
- B. 146.7
- C. 0.006
- D. 6800 Discuss
- 6. How many logic states does an S-R flip-flop have?
Options- A. 2
- B. 3
- C. 4
- D. 5 Discuss
- 7. If the primary of a 4:1 turns transformer dissipates 5 W, what is the secondary power?
Options- A. 5.0 W
- B. 1.25 pW
- C. 9.5 W
- D. 20.0 mW Discuss
- 8. In a common-mode input to an op-amp, both inputs are connected to the same signal source.
Options- A. True
- B. False Discuss
- 9. A step-up transformer will have a turns ratio greater than 1.
Options- A. True
- B. False Discuss
- 10. The number 5200 ×10?2 equals ___ × 101.
Options- A. 0.52
- B. 5.2
- C. 52
- D. 520 Discuss
More questions
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: 146.7
Correct Answer: 4
Correct Answer: 5.0 W
Correct Answer: True
Correct Answer: True
Correct Answer: 5.2
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