Download Aptitude Crack
img not found img not found

UPSC Civil Service Exam Questions - Engineering

Q1:

A car negotiates a curve on a slippery road at a constant speed of 10 m/s. If the coefficient of friction is 0.5, what is the minimum radius of the arc in which the car can turn ?

A 20 m

B 10 m

C 5 m

D 4 m

ANS:A - 20 m

e = 0.
f = V^2/gR,
R = V^2/gf,
R = 10^2/9.81 * 0.5.
R = 20m.