Electronic principles

1. The period of a waveform is: A. the time required to complete one full cycle B. the number of cycles completed in one second C. the time required for the voltage to rise from 10% to 90% of the peak amplitude D. equal to 0.707 times the peak amplitude E. None of the above

the time required to complete one full cycle
the number of cycles completed in one second
the time required for the voltage to rise from 10% to 90% of the peak amplitude
equal to 0.707 times the peak amplitude E. None of the above

Detailed SolutionThe period of a waveform is: A. the time required to complete one full cycle B. the number of cycles completed in one second C. the time required for the voltage to rise from 10% to 90% of the peak amplitude D. equal to 0.707 times the peak amplitude E. None of the above

2. What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? A. 220 ohm B. 150 ohm C. 445 ohm D. 690 ohm E. None of the above

220 ohm
150 ohm
445 ohm
690 ohm E. None of the above

Detailed SolutionWhat is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? A. 220 ohm B. 150 ohm C. 445 ohm D. 690 ohm E. None of the above

4. The current gain of a transistor is defined as the ratio of the collector current to the A. base current B. emitter current C. supply current D. collector current E. None of the above

base current
emitter current
supply current
collector current E. None of the above

Detailed SolutionThe current gain of a transistor is defined as the ratio of the collector current to the A. base current B. emitter current C. supply current D. collector current E. None of the above

5. Which one of the following principles best describes the basic operation of a generator? A. Like magnetic poles repel; unlike poles attract B. Current is induced in a conductor that is moving through a magnetic field C. Like magnetic poles attract; unlike poles repel D. Current flowing through a conductor generates a magnetic field E. None of the above

Like magnetic poles repel; unlike poles attract
Current is induced in a conductor that is moving through a magnetic field
Like magnetic poles attract; unlike poles repel
Current flowing through a conductor generates a magnetic field E. None of the above

Detailed SolutionWhich one of the following principles best describes the basic operation of a generator? A. Like magnetic poles repel; unlike poles attract B. Current is induced in a conductor that is moving through a magnetic field C. Like magnetic poles attract; unlike poles repel D. Current flowing through a conductor generates a magnetic field E. None of the above

8. Which one of the following statements most accurately reflects the nature of ac power? A. The current in an ac circuit flows in one direction, but changes value periodically B. The current in an ac circuit flows in one direction at a steady level C. The current in an ac circuit changes direction periodically D. The current in an ac circuit flows in two directions at the same time E. None of the above

The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit flows in one direction at a steady level
The current in an ac circuit changes direction periodically
The current in an ac circuit flows in two directions at the same time E. None of the above

Detailed SolutionWhich one of the following statements most accurately reflects the nature of ac power? A. The current in an ac circuit flows in one direction, but changes value periodically B. The current in an ac circuit flows in one direction at a steady level C. The current in an ac circuit changes direction periodically D. The current in an ac circuit flows in two directions at the same time E. None of the above

9. When operating below its resonant frequency, a parallel RLC circuit has the characteristics of a: A. parallel RL circuit B. parallel RC circuit C. parallel RLC circuit operated above its resonant frequency D. purely resistive circuit E. None of the above

parallel RL circuit
parallel RC circuit
parallel RLC circuit operated above its resonant frequency
purely resistive circuit E. None of the above

Detailed SolutionWhen operating below its resonant frequency, a parallel RLC circuit has the characteristics of a: A. parallel RL circuit B. parallel RC circuit C. parallel RLC circuit operated above its resonant frequency D. purely resistive circuit E. None of the above

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