The transfer function technique is considered as inadequate under which of the following conditions ?

Systems having complexities and non-linearities
Systems having stability problems
Systems having multiple input disturbances
All of the above

The transfer function technique is a method of analyzing and designing control systems. It is based on the idea that the output of a system can be expressed as a linear combination of the inputs and the system’s internal state. The transfer function is a mathematical function that relates the output of the system to the inputs.

The transfer function technique is a powerful tool for analyzing and designing control systems. However, it has some limitations. One limitation is that it is not well-suited for systems with complexities and non-linearities. Another limitation is that it is not well-suited for systems with stability problems. Finally, it is not well-suited for systems with multiple input disturbances.

In general, the transfer function technique is considered as inadequate under the following conditions:

  • Systems having complexities and non-linearities: The transfer function technique is based on the idea that the output of a system can be expressed as a linear combination of the inputs and the system’s internal state. However, this is not always the case for systems with complexities and non-linearities. For these systems, the transfer function technique may not be able to accurately represent the system’s behavior.
  • Systems having stability problems: The transfer function technique can be used to analyze the stability of a system. However, it is not always able to accurately predict the stability of a system with stability problems. For these systems, other methods may be needed to analyze the stability.
  • Systems having multiple input disturbances: The transfer function technique can be used to analyze the response of a system to multiple input disturbances. However, it is not always able to accurately predict the response of a system with multiple input disturbances. For these systems, other methods may be needed to analyze the response.

In conclusion, the transfer function technique is a powerful tool for analyzing and designing control systems. However, it has some limitations. It is not well-suited for systems with complexities and non-linearities, systems with stability problems, and systems with multiple input disturbances.