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Calculate mark to space ratio if the system is on for 5 sec and off for 10 sec.

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Calculate mark to space ratio if the system is on for 5 sec and off for 10 sec.

(a) .5

(b) .4

(c) .2

(d) .6

This question was addressed to me in my homework.

This question is from Dynamics topic in chapter Dynamics of Electrical Drives of Electric Drives

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Right option is (c) .2

Explanation: Mark to space is Ton÷Toff. It is the ratio of time for which the system is active and the time for which is inactive. M = Ton÷Toff=5÷10=2.

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