The frequency of pulsing in a die-sinking electric discharge machine ( – McqOptions

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1.	The frequency of pulsing in a die-sinking electric discharge machine (EDM) is 10 kHz. The pulse off-time is set at 40 micro-seconds. The duty factor at this setting is
A.	0.4
B.	0.6
C.	0.67
D.	2.5
Answer» C. 0.67

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