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- Question
A transformer is used:
Options- A. to couple electric energy from one dc circuit to another
- B. to couple electric energy from an ac circuit to a dc circuit
- C. to couple electric energy from a dc circuit to an ac circuit
- D. to couple electric energy from one ac circuit to another
- Correct Answer
- to couple electric energy from one ac circuit to another
- 1. The average value of the half-wave rectified output voltage is approximately __________ of Vp.
Options- A. 31.8%
- B. 63.6%
- C. 70.7%
- D. 100% Discuss
- 2. You can determine the direction of the lines of force surrounding a conductor by using _____.
Options- A. the right-hand rule
- B. the left-hand rule
- C. Lenz's law
- D. Faraday's law Discuss
- 3. "Train" and "single" is the mode selection for a _______.
Options- A. multimeter
- B. logic probe
- C. current tracer
- D. logic pulser Discuss
- 4. An open feedback resistor in an inverting or noninverting op-amp circuit can cause severe clipping of the output signal.
Options- A. True
- B. False Discuss
- 5. The resistors Rf and Ri in an op-amp circuit control ______ .
Options- A. positive feedback and current gain
- B. negative feedback and power gain
- C. negative feedback and voltage gain
- D. open and closed loop gain Discuss
- 6.
The circuit in the given circuit is a low-pass filter.
Options- A. True
- B. False Discuss
- 7. The common-mode rejection ratio (CMMR) is the ratio of _____ to ______.
Options- A. the differential voltage gain, the common-mode voltage gain
- B. the differential power gain, the common-mode power gain
- C. the ideal voltage gain, the actual voltage gain
- D. signal voltage, noise voltage Discuss
- 8. An emitter-follower has a voltage gain that is __________.
Options- A. much less than one
- B. approximately equal to one
- C. greater than one
- D. zero Discuss
- 9. The ________ is the "brains" of every microcomputer.
Options- A. ROM
- B. ALU
- C. CPU
- D. MPU Discuss
- 10. An input to the mode pin of an arithmetic-logic unit (ALU) determines if the function will be _________.
Options- A. one's complemented
- B. positive or negative
- C. with or without carry
- D. arithmetic or logic Discuss
More questions
Correct Answer: 31.8%
Correct Answer: the right-hand rule
Correct Answer: logic pulser
Correct Answer: True
Correct Answer: negative feedback and voltage gain
Correct Answer: True
Correct Answer: the differential voltage gain, the common-mode voltage gain
Correct Answer: approximately equal to one
Correct Answer: CPU
Correct Answer: arithmetic or logic
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