ISRO Electronics & Communication (ECE) 2009 - Question 53

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Topic: Electronics Engineering

In a pulsed radar, the peak radar transmitter power is increased by a factor of 81 keeping all other radar parameters unchanged. The maximum range capability of the radar increases by a factor of

  • A. 81
  • B. 9
  • C. 27
  • D. 3

Answer: D. 3

Explanation: Range $(R_{max})\propto(P_{T})^{1/4}$. The increase in maximum range is $(81)^{1/4} = 3$.

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