Question 225Electricity & Electronics - Assistant Engineer

The correct answer is B) electrical interlock device. An electrical interlock device is a mechanism that prevents the simultaneous energization of incompatible or potentially dangerous loads, thereby protecting against damage or injury. This type of device is commonly used in various applications, such as industrial machinery, electrical panels, and safety systems, to ensure that critical operations are performed in a specific order or that certain conditions are met before enabling specific functions. The other options are not the correct answer: A) monitoring device - This refers to a device that observes and reports on the status of a system, but does not necessarily prevent simultaneous energization. C) modulating device - This refers to a device that adjusts or controls the level of a signal or output, but does not specifically prevent simultaneous energization. D) mechanical limit device - This refers to a physical mechanism that restricts the movement or operation of a component, but does not directly address the issue of simultaneous energization.