Download Aptitude Crack
img not found img not found

UPSC Civil Service Exam Questions - Engineering

Q1:

Consider the following statements related to Los Angeles Abrasion test on aggregates :
1. It evaluates hardness of source - rock
2. It has a coefficient of variation of about 30 percent
Which of the statements given above is/are correct ?

A 1 only

B 2 only

C Both 1 and 2

D Neither 1 nor 2

ANS:A - 1 only

Can anyone tell what is the coefficient of variation for Los Angeles test, if not 30 percent, Also define the coefficient of variation?