Neco Model Questions Vol1 2017 Agricultural Science Question 30

Practice objective / multiple choice question 30 from the 2017 Neco Model Questions Vol1 Agricultural Science examination.

Neco Model Questions Vol1 2017 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 30 NECO_MODEL_QUESTIONS_VOL1 • 2017 • AGRICULTURAL_SCIENCE • objective

A tractor must pull a plow that requires a drawbar pull of 12 kN while moving at a forward speed of 5 km h⁻¹. The tractor's power‑take‑off (PTO) shaft and transmission have efficiencies of 85 % and 90 % respectively.\n(a) What is the minimum engine power (in kW) the tractor must be rated for to perform this operation?\n(b) If the tractor's engine is rated at 80 kW, what is the greatest forward speed (in km h⁻¹) at which it can pull the plow without exceeding the engine's power capacity?

Answer Options

A. (a) 25 kW (minimum); (b) ≈ 15 km h⁻¹
B. (a) 18 kW (minimum); (b) ≈ 22 km h⁻¹
Correct Answer C. (a) 22 kW (minimum); (b) ≈ 18 km h⁻¹
D. (a) 20 kW (minimum); (b) ≈ 20 km h⁻¹
Correct Answer
C
Correct Option:
(a) 22 kW (minimum); (b) ≈ 18 km h⁻¹

About This Question

This is Neco Model Questions Vol1 2017 Agricultural Science Question 30. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Agricultural Science examination.

Difficulty level: Medium .

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