Electronics Paper 2, May/June 2014  
Questions: 1 2 3 4 5 6 7 Main
General Comments

Question 7
  1. Draw the block diagram of a simple closed-loop control system.
  1. State the conditions for stability in a closed-loop control system.

 The expected answers were:

(b)        GH must NOT equal 1 when the phase angle of GH is 1800.
The question was on Amplifiers. The question was unpopular. The performance of the very few candidates that attempted it was reportedly poor.

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