Exercise: Electronic Principles

Questions for: Electronic Principles

The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?
A:
1750 mA
B:
17.5 mA
C:
175 mA
D:
1.75 mA
Answer: B
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Which is the most widely used semiconductor?
A:
Copper
B:
Silicon
C:
Germanium
D:
All of the above
Answer: B
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Which one of the following phrasers best describes flux density?
A:
The concentration of lines of magnetic force
B:
The rate of change of the number of lines of magnetic force
C:
The opposition to a build-up of magnetic fields
D:
The force that maintains lines of force
Answer: A
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A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation?
A:
200 mW
B:
300 mW
C:
20 mW
D:
10 mW
Answer: A
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Which one of the following is a statement of Kirchhoffs current law?
A:
The current through a resistance is proportional to the value of resistance and the IR drop across it
B:
The total current in a parallel circuit is less than the value of the smallest current
C:
The algebraic sum of currents in a loop is equal to zero
D:
The algebraic sum of currents entering and leaving a point is equal to zero
Answer: C
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