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

nicad cell
photodiode
piezoelectric device
solar cell
None of these

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Electronic Principles
Which one of the following statements most accurately describes the nature of inductive reactance?

Inductive reactance is a force that tends to overcome the effects of counter emf
Inductive reactance is an opposition to current flow in dc circuits
Inductive reactance is an opposition to current flow in ac circuits
None of these
Inductive reactance is another term for counter emf

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

The total current in a parallel circuit is always less than the smallest amount of current
The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance
The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
None of these
The same current always flows through every part of a parallel circuit

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