Question Bank • QB_APE_EXP_006 NAT • 2 Marks

Section 6: Agricultural Process Engineering

Engineering Properties of Agriculture Produce

Subtopic: Physical properties

Question Statement:

A grain moisture meter reports the moisture content of a wheat sample as $15.0\%$ on wet basis ($M_{wb}$). The corresponding moisture content on dry basis ($M_{db}$) in percentage is ________ (round off to 2 decimal places).

Answer Key:

17.65

Step-by-Step Solution & Explanation

The relation converting wet basis moisture content ($M_{wb}$) to dry basis moisture content ($M_{db}$) is: $M_{db} = \frac{M_{wb}}{1 - M_{wb}}$ Given $M_{wb} = 0.15$: $M_{db} = \frac{0.15}{1 - 0.15} = \frac{0.15}{0.85} = \frac{3}{17} \approx 0.17647 = 17.65\%$
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