Three-phase alternating-current power is typically distributed on how many independent conductors?

Which model is generally used for transmission lines?

Which of these is a passive electronic component?

Which of these is an active electronic component?

Which of these is NOT a part of a regular DC power supply?

True or False? Differential signalling can be employed in both analog circuits and digital circuits.

Consider a typical household AC circuit that is protected by both a circuit breaker and a ground-fault interruptor. A person accidentally shorts the hot lead to ground, drawing a lethal current of 100 mA. Which of the two safety devices will trip?

What is the typical low-voltage cutoff for a "high" signal in transistor-transistor logic (TTL)?

Of what safety device is this a description: A primary circuit that is magnetically coupled to a secondary circuit in which imbalance of hot and neutral current is measured?

Which model makes the simplifying assumption that all components in a circuit are ideal and all wires conduct perfectly?

Of the following four types of digital latches, which one can be configured (with cross-couplings) to operate as the other three?