250+ TOP MCQs on Sowing Equipments – Seed Metering Mechanism and Answers

This set of Farm Machinery Multiple Choice Questions on “Sowing Equipments – Seed Metering Mechanism”.

1. In which process of seeding, the seeds are placed in the holes made in seed bed and covering them?
a) Broadcasting
b) Transplanting
c) Dibbling
d) Drilling
Answer: c
Explanation: Dibbling is the process of placing the seeds in holes made in seed bed and covering them. In this method, seeds are placed in holes made are definite depth at fixed spacing. The equipment used for dibbling is called Dibbler.

2. Which of the following is not a type of Drilling?
a) Sowing behind the plough
b) Bullock drawn seed drills
c) Tractor drawn seed drills
d) Check row planting
Answer: d
Explanation: Check row method is a method of planting, in which row to row and plant to plant distance is uniform. In this method, seeds are planted precisely along straight parallel furrows. The rows are always in two perpendicular directions.

3. In which seed metering mechanism, the feed wheel is provided with fine and coarse ribbed flanges?
a) Internal double run type
b) Fluted feed type
c) Cell feed mechanism
d) Brush feed mechanism
Answer: a
Explanation: Internal double run type is a seed metering device in which the feed wheel is provided with fine and coarse ribbed flanges. It consists of discs, mounted on a spindle and housed in a casing fitted below the seed box.

4. Calculate the cost of seeding one hectare of land with bullock-drawn seed drill of 5*22 cm size. The speed of bullocks is 3km/hr. Hire charges of bullocks ₨ 100/- per pair, hire charges of seed drill is ₨ 50/- per day and wage of operator ₨ 100/- per day of 8 hours.
a) ₨ 84.88
b) ₨ 94.68
c) ₨ 110.90
d) ₨ 34.29
Answer: b
Explanation: Width of seed drill = 5*22 = 10 cm = 1.1m
Area covered/hr= width * speed = 1.1*3*1000 m² = 0.33 ha
Time taken = 1/0.33 = 3.03 hrs
Cost of seeding/hr = (frac{100+50+100}{8}) = Rs 31.25
Cost of seeding per hectare = 3.03 * 31.25 = Rs 94.68

5. A fluted feed seed drill has eight furrow openers of single disc type. The furrow openers are spaced 25 cm apart and the main drive wheel has a diameter of 120 cm. How many turns of main drive wheel would occur when the seed drill has covered one hectare of area?
a) 1333.3
b) 1666.6
c) 1999.9
d) 1234.5
Answer: a
Explanation: Circumference of drive wheel = π*120 = 376.8 cm
Total width of seed drill = 25*8 = 200 cm
Area covered per revolution = 376.8*200 cm² = 7.5 m²
Number of turns/ha = 10000/7.5 = 1333.3

6. Calculate the time required for sowing 1.6 hectares of land by five furrows seed drill going 12.5 cm deep. The speed of seed drill is 3.2 km/hr and pressure exerted by the soil on the seed drill is 0.42 kg/cm². The space between furrow openers is 10 cm and loss in turning is 10%.
a) 21.07 hrs
b) 9.87 hrs
c) 2.34 hrs
d) 11.11 hrs
Answer: d
Explanation: Total width of seed drill = 5*10 = 50 cm
Theoretical area/hr = (frac{50}{100}*frac{3.2*1000}{10000}) = 0.16 ha
Actual area/hr = (frac{0.16*90}{100}) = 0.144 ha
Time for sowing 1.6 ha = (frac{160}{0.144}) = 11.11 hrs

7. Calculate the seed rate/hectare of a 7*17 cm seed drill, whose main drive wheel is 124 cm diameter and total weight of grain collected in 20 revolutions in 0.423 kg.
a) 45.58 kg
b) 54.34 kg
c) 90 kg
d) 23.78 kg
Answer: a
Explanation: Total width of seed drill = 7*17 = 119 cm = 1.19m
Circumference of main drive wheel = π*124 cm = 3.90m
Area covered per revolution = 1.19 * 3.9 = 4.64 m²
Number of revolutions/ha = 10000/4.64 = 2155.17
20 revolutions require 0.423 kg of seed
Seed required for 2155.17 revolution = (frac{2155.17*0.423}{20}) = 45.58 kg

8. Maximum yield of maize is obtained with a population of 40000 plants per hectare. The rows are 140cm apart and an average emergence of 85% is expected. How many seeds per hill should be planted if hills are 140cm apart?
a) 9
b) 2
c) 10
d) 11
Answer: c
Explanation: Number of seeds/ha = 40000/0.85 = 47058
Area covered per hill = 1.4*1.4 = 1.96 m²
No. of hills/ha = 10000/1.96 = 5102
No. of seed/hill = 47058/5102 = 9.22 ~10

9. Which seed metering mechanism consists of cups of spoon on the periphery of a vertical rotating disc?
a) Cup feed mechanism
b) Cell feed mechanism
c) Brush feed mechanism
d) Picker wheel mechanism
Answer: a
Explanation: Cup feed mechanism consists of cups of spoons on the periphery of a vertical rotating disc which picks up the seeds from the hopper and delivers them into the seed tubes.

10. Which seeding method uses Malobansa?
a) Transplanting
b) Seed dropping behind the plough
c) Check row planting
d) Hill dropping
Answer: b
Explanation: Seed dropping behind the plough is very common method used in villages. It is used for seed like maize, gram, peas, wheat and barley. A man drops seeds in the furrow behind the plough. Sowing behind the plough can be done by a device known as Malobansa.