Subtopic: Sources of power on the farm – human, animal, mechanical, electrical, wind, solar and biomass
Question Statement:
Match the following items of Column I with the corresponding items of Column II:
| Column I | Column II |
|---|---|
| P. Cetane number | 1. Beam radiation |
| Q. Pyrheliometer | 2. Anti-knock quality |
| R. Octane number | 3. Total solar radiation |
| S. Pyranometer | 4. Ignition quality |
Options:
(A) P-2, Q-3, R-1, S-4
(B) P-4, Q-1, R-2, S-3
(C) P-4, Q-3, R-2, S-1
(D) P-2, Q-4, R-1, S-3
Official Answer Key:
B
Step-by-Step Solution & Explanation
Cetane number → ignition quality of diesel fuel ⇒ P-4.
Pyrheliometer → measures direct beam radiation at normal incidence ⇒ Q-1.
Octane number → anti-knock quality of petrol ⇒ R-2.
Pyranometer → measures total (global) solar radiation on a horizontal surface ⇒ S-3.
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