Exam Questions Papers - Engineering

Q1:

In a radar system, the range of R1 is achieved at a frequency f1. Then the range R2 at frequency R2 = 8f1 would be __________ [Neglect effect of 1 on the Beam width.]

A R2 = R1

B R2 = 4R1

C
R2 = 2R1

D
R2 =

ANS:C -

R2 = 2R1

The range of the radar is directly proportional to the square root of the frequency. R ∝ R1 and R2 .