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UPSC Civil Service Exam Questions - Engineering

Q1:

Which of the following pairs is correctly matched ?

A Froude's number .... Intertial to surface tension force

B Mach number .... Inertial to elastic force

C Euler number .... Inertial to gravity force

D Reynolds number .... Inertial to pressure force

ANS:B - Mach number .... Inertial to elastic force

A - inertial force to gravitational force.
C- inertial force to pressure force.
D- inertial force to viscous force.