Allied & ICAR Exam Bank • ALLIED_0402 MCQ • 1 Mark

Section 4: Soil and Water Conservation Engineering

Hydrology and Runoff

Subtopic: Hydrology and Runoff

Question Statement:

Horton's infiltration equation expresses infiltration capacity $f_p$ at time $t$ as:

Options:

  • (A) $f_p = f_c + (f_0 - f_c) e^{-kt}$
  • (B) $f_p = f_0 + (f_c - f_0) e^{kt}$
  • (C) $f_p = f_c \cdot t^{-k}$
  • (D) $f_p = f_0 - k t$

Answer Key:

A

Step-by-Step Solution & Explanation

Horton's model describes exponential decay from initial capacity $f_0$ to steady-state final capacity $f_c$ at decay constant $k$: $f_p = f_c + (f_0 - f_c) e^{-kt}$.
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