Question

Which of the following farm operations utilizes the stationary source of power?

(A)	Irrigation Water Lifting
(B)	Winnowing
(C)	Threshing
(D)	Harvesting
(E)	Cultivation
(F)	Transportation

Choose the correct answer from the options given below:

• A. (D), (E) and (F) only.
• B. (C), (D) and (E) only.
• C. (B), (C) and (D) only.
• D. (A), (B) and (C) only.

Hint:

Ask which of these six operations keep the power unit fixed at one spot instead of moving across the field.

Answer 1

The Correct Option is D

Step 1: A stationary power source stays fixed at one place while it drives a machine, usually through a belt or a pump shaft, rather than moving across the field.

Step 2: Irrigation water lifting uses a pump fixed at the water source, winnowing uses a winnower run by a belt from a stationary engine or motor, and threshing uses a thresher likewise driven by a stationary power unit. All three are done at a fixed spot.

Step 3: Harvesting, cultivation and transportation all need the power source, typically a tractor, to move continuously across the field or road, so they use mobile power, not stationary power. The correct set is (A), (B) and (C) only, option 4.