Question

The high volume instrument gives
A. span length and bundle strength
B. colour of cotton
C. micronaire value and maturity ratio
D. honeydew in cotton Choose the correct answer from the options given below:

• A. A, B, C only
• B. A, C, D only
• C. A, B, D only
• D. B, C, D only

Hint:

HVI is the "ID Card" of a cotton bale. It tells the spinner how long, strong, fine, and white the cotton is in just a few seconds.

Answer 1

The Correct Option is A

Concept: The High Volume Instrument (HVI) is a standard automated testing suite used globally for the rapid classification of cotton quality.

Step 1: Core Measurements.
HVI provides a comprehensive profile of cotton quality, including:
• A (Length and Strength): It measures upper half mean length and bundle tenacity.
• C (Micronaire and Maturity): It uses air-flow methods to determine fineness (Micronaire) and maturity.
• B (Colour): It uses a colorimeter to measure reflectance (Rd) and yellowness (+b).

Step 2: Exclusion.
D (Honeydew) refers to sticky sugar deposits from insects. While HVI is very advanced, honeydew detection usually requires separate chemical or specialized mechanical tests (like the "SCT" or thermodetector).