ISRO Electronics & Communication (ECE) 2017-2 - Question 6

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Topic: Digital Electronics

If input to T flip flop is 200 Hz signal, then what will be the output signal frequency if four T flip flops are connected in cascade

  • A. 200 Hz
  • B. 50 Hz
  • C. 800 Hz
  • D. None of the above

Answer: D. None of the above

Explanation: Input frequency = 200 Hz. Output frequency when 4 T flip/flop stages are cascaded = $\frac{F_t}{2^4}=\frac{200}{16}=12.5$ Hz. Note: The official solution text calculates it as $\frac{200}{2 \times 4}=25$ Hz, which also leads to (d) None of the above.

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