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Computer Science - Electronic Principles

Exercise : Electronic Principles - Section 5
21.
The net charge of a neutral copper atom is
0
+1
-1
+4
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Which one of the following statements is true for the voltage in a parallel RL circuit?
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage is equal to the sum of the voltages across the resistance and inductance
The total voltage lags the total current by less than 90
The total voltages is less than the sum of the voltages across the resistance and inductance
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
A low-pass filter:
passes lower-frequency signals and reduces higher-frequency signals
passes higher-frequency signals and reduces lower-frequency signals
has no effect on ac signals
reduces the level of all frequencies by a significant amount
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
What is one important thing transistors do?
Emit light
Amplify weak signals
Regulate voltage
Rectify line voltage
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
At room temperature an intrinsic silicon crystal acts approximately like
a battery
a conductor
an insulator
a piece of copper wire
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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