The voltage fed back from an op amp output to its input is A) ...

[tth]

The voltage fed back from an op amp output to its input is
 
  A) a function of the open loop gain.
  B) in phase with the with the input.
  C) 90 degrees out of phase with the input.
  D) small compared to the input.
  E) none of the above

Question 2

The PLC standard does not include the ladder logic programming language because most US manufactures of PLCs have there own proprietary ladder logic language.
 
  Indicate whether the statement is true or false

[Jevvish]

Answer to Question 1

E

Answer to Question 2

FALSE

[tth]

Thanks for the timely response, appreciate it

Gracias!