Electronic Principles
A device that converts thermal energy to electrical energy is called a:

None of these
solar cell
piezoelectric devices
chemical cell
thermocouple

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Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

inductive reactance is equal to the capacitive reactance
capacitive reactance is greater than the inductive reactance
None of these
inductive reactance is greater than the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance

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Electronic Principles
Which one of the following statements is true for the currents in a parallel RC circuit?

The total current is equal to the sum of the currents for the resistance and capacitance
None of these
The total current is less than the sum of the currents for the resistance and capacitance
The total current. is greater than the sum of the currents for the resistance and capacitance
The current always has the same amplitude and phase for every part of the circuit

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Electronic Principles
Which one of the following statements is true for resistance in a parallel circuit?

The total resistance of a parallel circuit is equal to the total voltage
The total resistance in a parallel circuit is equal to the average value of the individual resistances
The total resistance of a parallel circuit is always less than the value of the smallest resistance
The total resistance is equal to the sum of the individual resistances in a parallel circuit.
None of these

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