Free Agricultural/Bioengineering Farm Machinery Questions and Answers — Questions and Answers

Question 1: How much of the country's GDP is contributed by the processed food sector?

2.10%
7.40%
6.30% (Correct answer)
3%

Correct answer: 6.30%

The processed food sector is a vital component of a country's economy, contributing significantly to its Gross Domestic Product (GDP). While specific figures can vary by country and year, 6.30% represents a common estimate or a specific data point for the contribution of the processed food sector to the GDP in certain contexts, such as India's economy. This sector adds value to agricultural produce, creates employment, and boosts economic growth.

Question 2: What percentage of India's total land area is used for agriculture?

200 million hectares
166 million hectares (Correct answer)
145 million hectares
186 million hectares

Correct answer: 166 million hectares

India possesses a vast agricultural land base, which is crucial for feeding its large and growing population. The figure of 166 million hectares represents the approximate net sown area or total agricultural land available for cultivation in India. This extensive land use underscores the country's reliance on agriculture and its significant role in global food production.

Question 3: What percentage of farms are owned by small and marginal farmers?

36%
64%
25%
75% (Correct answer)

Correct answer: 75%

In many developing countries, particularly India, the agricultural landscape is characterized by a high proportion of small and marginal farmers who own less than 2 hectares of land. Approximately 75% of all farm holdings fall into this category, reflecting a highly fragmented land ownership pattern. This demographic often faces unique challenges related to productivity, access to resources, and market integration.

Question 4: How big a field can traditional implements handle?

0.5-0.6 ha/day
0.8-0.9 ha/day
0.7-0.8 ha/day
0.3-0.4 ha/day (Correct answer)

Correct answer: 0.3-0.4 ha/day

Traditional agricultural implements, often animal-drawn or manually operated, have a significantly lower work capacity compared to modern mechanized equipment. They are designed for smaller plots and require more time and labor to cover an area. An output of 0.3-0.4 hectares per day is a realistic estimate for the area that can be effectively managed using such traditional methods.

Question 5: The following is a reduced by agriculture mechanization.

Corruption
Pollution
Population
Drudgery (Correct answer)

Correct answer: Drudgery

Agricultural mechanization involves the use of machines and technology in farming operations, which significantly reduces the physical burden and repetitive, arduous tasks associated with manual labor. This reduction in hard, unpleasant, or monotonous work is known as drudgery. Mechanization improves efficiency, saves time, and makes farming less physically demanding for farmers, enhancing their quality of life.

Question 6: How much of a fertilizer is lost if it is not applied correctly?

10%
30% (Correct answer)
40%
80%

Correct answer: 30%

Improper fertilizer application, such as surface broadcasting without incorporation or applying at the wrong time, can lead to significant nutrient losses. These losses occur through various mechanisms like volatilization, leaching, runoff, and denitrification, reducing nutrient availability to crops and increasing environmental impact. An estimated 30% loss is a common figure representing the inefficiency that can result from incorrect application methods.

Question 7: Which component drives semi-mounted or mounted type tractor-drawn mowers?

Cutter
Pitman
Grass board
PTO shaft (Correct answer)

Correct answer: PTO shaft

The Power Take-Off (PTO) shaft is a standard mechanical connection on tractors used to transmit mechanical power to implements. For semi-mounted or mounted tractor-drawn mowers, the PTO shaft provides the rotational energy required to operate the cutting mechanism, such as the blades or knives. This allows the mower to effectively cut grass or crops by converting the tractor's engine power into mechanical work for the implement.

Question 8: Which clutch is employed in a mower's driving mechanism?

Single plate
Fluid coupling
Dog clutch (Correct answer)
Friction clutch

Correct answer: Dog clutch

A dog clutch is a non-synchronous clutch that locks two rotating shafts together by means of interlocking teeth or 'dogs.' It is often used in applications where positive engagement is required and some shock loading is acceptable, such as in the driving mechanism of mowers. Unlike friction clutches, it does not rely on friction for torque transmission but on direct mechanical engagement, providing a robust connection.

Question 9: What distinguishes each knife clip from the others?

40-50 cm
5-15 cm
20-30 cm (Correct answer)
35-45 cm

Correct answer: 20-30 cm

This question likely refers to the typical spacing or pitch between knife clips on a cutter bar of a reciprocating mower. The distance of 20-30 cm (approximately 8-12 inches) between knife clips is a common design parameter for such agricultural machinery. This spacing ensures effective cutting action and proper support for the knives as they move back and forth, contributing to efficient operation.

Question 10: Which method of planting involves burying the seeds after they have been inserted into the holes produced in the seed bed?

Drilling
Dibbling (Correct answer)
Transplanting
Broadcasting

Correct answer: Dibbling

Dibbling is a precise planting method where seeds are placed individually into pre-made holes in the seedbed, which are then carefully covered with soil. This technique allows for accurate spacing and depth control for each seed, making it suitable for larger seeds or when careful placement is desired. It differs from drilling (continuous rows), broadcasting (scattering), and transplanting (moving seedlings).

Question 11: Of the following, which one is not a form of drilling?

Check row planting (Correct answer)
Tractor drawn seed drills
Bullock drawn seed drills
Sowing behind the plough

Correct answer: Check row planting

Drilling involves sowing seeds in continuous, evenly spaced rows, typically using a seed drill (tractor-drawn or bullock-drawn) or by hand behind a plough. Check row planting, however, is a distinct method where seeds are planted at precise intervals in both directions, forming a grid pattern. This allows for cultivation in two directions but is not characterized by the continuous row sowing typical of drilling.

Question 12: What kind of seed metering system has a feed wheel with fine and coarse ribbed flanges?

Brush feed mechanism
Cell feed mechanism
Fluted feed type
Internal double run type (Correct answer)

Correct answer: Internal double run type

The internal double run seed metering system is characterized by a feed wheel that features two sets of ribs or flanges: one fine-ribbed side for small seeds and one coarse-ribbed side for larger seeds. This versatile design allows the same metering mechanism to handle a wide range of seed sizes by simply reversing the wheel or engaging the appropriate side, making it highly adaptable for different crops.

Question 13: What is the name of the procedure for igniting fuel by heat of compression?

Specific gravity method
Compression initial method
Cooling ignition method
Compression ignition method (Correct answer)

Correct answer: Compression ignition method

The compression ignition method is the fundamental principle behind diesel engines. In this process, air is compressed to a very high pressure within the cylinder, which significantly raises its temperature. Fuel is then injected into this hot, compressed air, and the heat generated by the compression is sufficient to ignite the fuel spontaneously, without the need for a spark plug.

Question 14: What tool is used to regulate the flow of oil and keep the lubricating system's pressure at the proper level?

Grease
Relief valve (Correct answer)
By pass filter
Crankcase breather

Correct answer: Relief valve

In a lubricating system, a relief valve is a crucial component designed to control and maintain the oil pressure within a safe and optimal range. If the pressure exceeds a predetermined limit, the relief valve opens to divert excess oil back to the sump or a lower-pressure area. This prevents damage to the system components and ensures consistent, adequate lubrication throughout the engine or machinery.

Question 15: There is an impeller with radial vanes acting as the driving member and a runner with radial vanes acting as the driven member.

Cone clutch
Friction clutch
Dog clutch
Fluid coupling (Correct answer)

Correct answer: Fluid coupling

A fluid coupling, also known as a hydraulic coupling, is a hydrodynamic device used to transmit rotational mechanical power. It consists of two main components: an impeller (pump) connected to the input shaft and a runner (turbine) connected to the output shaft, both equipped with radial vanes. Power is transmitted through the kinetic energy of a fluid (typically oil) circulating between these two members, allowing for smooth power transfer and shock absorption.

Question 16: Which type of clutch has multiple thin metal plates that are alternately positioned to serve as the driving and driven members?

Fluid coupling
Dog clutch
Single plate clutch
Multiple plate clutch (Correct answer)

Correct answer: Multiple plate clutch

A multiple plate clutch, as its name suggests, utilizes several thin metal plates stacked alternately. Some plates are splined to the driving shaft, and others are splined to the driven shaft. When engaged, these plates are pressed together, significantly increasing the total friction surface area. This design allows for the transmission of higher torque within a compact space, making it common in applications like motorcycles and heavy machinery.

Free Agricultural/Bioengineering Farm Machinery Questions and Answers

How much of the country's GDP is contributed by the processed food sector?