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UGC-NET | UGC NET CS 2014 Dec – III | Question 3

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In a dot matrix printer the time to print a character is 6 m.sec., time to space in between characters is 2 m.sec., and the number of characters in a line are 200. The printing speed of the dot matrix printer in characters per second and the time to print a character line are given by which of the following options? (A) 125 chars/second and 0.8 seconds (B) 250 chars/second and 0.6 seconds (C) 166 chars/second and 0.8 seconds (D) 250 chars/second and 0.4 seconds (E) 125 chars/second and 1.6 seconds

Answer: (E)

Explanation: Total no of characters = 200 (each character having one space) Time taken to print one character = 6 ms; Time taken to print one space = 2 ms. character printing = 200 * 6 = 1200 ms space printing = 200 * 2 = 400 ms total printing time = 1200 + 400 = 1600 ms = 1.6 s. The printing speed of the dot matrix printer in characters per second = 200 / 1.6 = 125 / s. So, option (E) is correct.

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Last Updated : 03 Jul, 2018
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