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Karan Singh
24 Apr 2019 11:59 AM study24x7 study24x7

 The measure of reliability of string is given by the factor

A

DRF = 1 – String efficiency

B

DRF = 1 + String efficiency

C

DRF = String efficiency – 1

D

DRF = String efficiency x 2

Railways IIT-JEE Sciences
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  • geet sharma
    • DRF is de-rating factor given by the above expression.
    Like
    Reply 24 Apr 2019 12:43 PM
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