Electronic Principles
An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?

24.2 mA
None of these
28.4 mA
34.4 mA
68.4 mA

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Electronic Principles
A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?

1000 V and a series resistance of 10 k Ohm
100 V and a parallel resistance of 10 k Ohm
1000 V and a parallel resistance of 10 kOhm
100 V and a series resistance of 10 k Ohm
None of these

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Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

None of these
The ac voltage leads the current by 90 degree
Combinations of resistance and capacitive reactance provide any opposition to current flow
Capacitive reactance provides the only opposition to current flow
Resistances provide the only opposition to current flow

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Electronic Principles
Which one of the following statements applies to common auto batteries?

None of these
Auto batteries are primary wet-cell batteries
Auto batteries are secondary dry-cell batteries
Auto batteries are primary dry-cell batteries
Auto batteries are secondary wet-cell batteries

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Electronic Principles
Which one of the following is a direct statement of Ohm's law?

None of these
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
The algebraic sum of currents entering and leaving a point is equal to zero
The total resistance of a parallel circuit is less than the value of the smallest resistance
The algebraic sum of voltages in a loop is equal to zero

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