Module 2: Human and Animal Power

Question 1

ability of a device or mechanism to do a specific amount of work over a period of time

Answer 1

power

Question 2

a unit of power commonly use in the farm to indicate the work output of humans, draft animals, and mechanical prime movers

Answer 2

horsepower

Question 3

oldest sources of power in the farm

Answer 3

human and animal power

Question 4

man learned to tame animals he hunted for food to work for him by providing ___________ power

Answer 4

pulling

Question 5

after learning to tame animals, man learned the use of sleds for transporting cargoes; use of _______ underneath the underneath the sleds; and finally the use of _______

Answer 5

rollers; wheels

Question 6

while ____ is the greatest discovery of man, the _____ is the greatest invention of man

Answer 6

fire; wheel

Question 7

main sources of power in the farm

Answer 7

human and animal power

Question 8

advantages of using human and animal power

Answer 8

• size of the farm
• topography
• crops grown
• cost of equipment
• cost of fuel
• availability of labor

Question 9

considered a poor source of power

Answer 9

human power

Question 10

it develops only 0.1 hp working continuously under favorable conditions

Answer 10

human power

Question 11

there are about _____ mil hectares of agricultural land in the philippines

Answer 11

9.56

Question 12

the ratio of female to male in agricultural employment is 1:3

true or false

Answer 12

true

Question 13

how many people are engaged in agriculture?

Answer 13

12.04 million people

Question 14

human power contribution in the agri of ph

Answer 14

0.126 hp/ha

Question 15

considered as the major beast of burden

Answer 15

carabao

Question 16

this power source can generate 1 hp walking continuously under favorable conditions

Answer 16

carabao

Question 17

carabaos are confined mostly to pulling operations such as???

Answer 17

• plowing
• harrowing
• cultivating
• transport

Question 18

population of carabaos in the philippines

Answer 18

3.01 million carabaos

Question 19

percent of animal power that is used for draft work

Answer 19

70%-75%

Question 20

animal power contribution in the agri of ph

Answer 20

0.225 hp/ha

Question 21

advantages of using carabaos

Answer 21

• low initial cost
• easy to maintain
• rarely buds down in mud
• work close to levees
• mobile in most terrain
• capable to reproduce
• sources of milk, meat, etc.

Question 22

disadvantages of using carabaos

Answer 22

• low work output
• prone to disability
• requires daily attention
• causes unsanitary conditions

Question 23

20% of the weight of the carabao is the optimum draft the animal can sustain

true or false

Answer 23

false; 10-15%

Question 24

rate of which a machine or an implement can cover a field while performing its intended function

Answer 24

field capacity

Question 25

rate of field coverage that would be obtained if the machine was performing its function 100% of the time at the rated forward speed and always covered 100% of its rated width

Answer 25

theoretical field capacity

Question 26

rate of field coverage by the machine based upon the total field time, which is defined as the sum of the effective operating time and time lost

Answer 26

effective/actual field capacity

Question 27

ratio of the actual field capacity to the theoretical field capacity, expressed as %

Answer 27

field efficiency

Question 28

field efficiency _______ the effects of time lost in the field and of failure to utilize the full width of the machine includes/excludes

Answer 28

excludes

Question 29

which source of power is beneficial to agricultural operations that require decision-making, clear judgements and acquired skills?

Answer 29

human power

Question 30

in 2011, there was a decline in the number of agricultural and workers with a projected average decrease of _________ workers/year leaving the sector

Answer 30

250,000

Question 31

the employment share of agriculture in 2015 is 43% true or false

Answer 31

false; 43% is in 1995, it fell to 27% in 2015

Question 32

majority of agricultural workers feel in to ___-54 years age range (61.5%)

Answer 32

25

Question 33

carabaos' plowing capability (in terms of hours)

Answer 33

25-50 hours plowing once per hectare

Question 34

carabaos can walk _____ km per hectare

Answer 34

77 km

Question 35

one of the disadvantages of using carabaos is its low work output this includes limited working hours to avoid???

Answer 35

intense heat of the sun

Question 36

formula for theoretical field capacity or C sub T

Answer 36

C sub T = SWEff / 10

Question 37

formula for effective/actual field capacity or C sub A

Answer 37

C sub A = A covered / T total

Question 38

formula for field efficiency

Answer 38

Eff = C sub A / C sub T