How many motors are energized when the circuit power is turned ON and after the necessary switches are activated?

The correct choice indicates that two motors are energized when the circuit power is turned ON and after the necessary switches are activated. This scenario typically occurs in situations where multiple motors are connected in a circuit, and their activation is contingent upon specific control mechanisms such as switches or relays.

When the circuit is energized, it provides power to all devices in the circuit, but the actual number of motors that operate will depend on the configuration of the control system in place. If there is a setup with two motors and appropriate switches or relays for each motor, engaging those switches after turning on the circuit power would result in both motors being activated simultaneously.

This understanding reinforces the concept of circuit control where multiple devices can be interconnected, and their operation is managed through control elements like switches. It's essential to consider the entire control scheme to determine how many motors will actually run. In practical applications, only motors that are properly switched on will operate, making it crucial to be aware of their individual activation conditions.