Module 5: Tractors and Transmission System

Question 1

mechanical device powered with an engine ranging from 3 to over 100 hp

Answer 1

tractor

Question 2

two types of tractor

Answer 2

1) 2 wheel tractor
2) 4-wheel tractor

Question 3

single-axle machine powered by an engine ranging from 3 hp to 15 hp

Answer 3

2-wheel tractor

Question 4

double-axle machine powered by an engine ranging from 15 hp to over 100 hp

Answer 4

4-wheel tractor

Question 5

also know as walking type tractors or hand tractors

Answer 5

2-wheel tractor

Question 6

the first 2-wheel tractors were in introduced in the Philippines from America in the 1960s for wetland rice cultivation

true or false

Answer 6

false; they were from Japan

Question 7

2-wheel tractors are used in operations such as:

Answer 7

• land preparation
• planting
• cultivating
• harvesting
• transport

Question 8

in this type of tractor, implements are attached to this tractor and the operator walks behind to provide control

Answer 8

2-wheel tractor

Question 9

classification of 2-wheel tractors according to function

Answer 9

1. traction/pull type
2. rotary type
3. general-purpose type

Question 10

classification of 2-wheel tractors according to function

provide pulling power through its drawbar

Answer 10

traction-pull type

Question 11

in a traction/pull type 2-wheel tractor, what is fitted to tractor for dry land operation?

Answer 11

pneumatic tires

Question 12

in a traction/pull type 2-wheel tractor, what is fitted to the tractor for wet land operation?

Answer 12

stage cage wheels

Question 13

classification of 2-wheel tractors according to function

fitted with rotary blades to cut and pulverize the soil

Answer 13

rotary type

Question 14

classification of 2-wheel tractors according to function

fitted with a drawbar for traction work and a power-take-off (PTO) for rotary work

Answer 14

general-purpose type

Question 15

in a rotary type 2-wheel tractor, rotary blades may be attached to the wheel axle for wet land operation

true or false

Answer 15

false; for dry land operation

Question 16

in a rotary type 2-wheel tractor, rotary blades are attached where? for wet land operation

Answer 16

they are attached to a front axle like a cage wheel

Question 17

the wet land type of a rotary 2-wheel tractor comes with a floating device that is for?

Answer 17

deep mud conditions

Question 18

general-purpose type tractors comes with a moldboard or disc plow attached to the _________; it also comes with a detachable ___________________ powered by the PTO

Answer 18

drawbar; rotavator assembly

Question 19

this tractor is of Japanese design and comes normally with steering clutches and multiple speed transmission including reverse

Answer 19

general-purpose type

Question 20

the first 4-wheel tractors were brought to PH during the ________ occupation for large-scale _______ production

Answer 20

American; sugar cane

Question 21

_______ : drawbar
rotary : PTO
lifting : __________

Answer 21

power : drawbar
rotary : PTO
lifting : hydraulic system

Question 22

in a 4-wheel tractor, implements are mounted on the tractor using the _________-________ ____-_____ hitch system

Answer 22

hydraulic-controlled three-point hitch system

Question 23

it is a slow-moving vehicle (up to 30 kph) with high torque on the driving wheels

Answer 23

4-wheel tractor

Question 24

a 2-wheel tractor comes with multiple speed transmission including reverse

true or false

Answer 24

false; that is a 4-wheel tractor

Question 25

classification of 4-wheel tractors according to horsepower rating of the engine

Answer 25

1. compact type 2. standard type

Question 26

classification of 4-wheel tractors according to horsepower rating of the engine tractors with power rating below 32 hp

Answer 26

compact type

Question 27

classification of 4-wheel tractors according to horsepower rating of the engine power rating above 32 hp

Answer 27

standard type

Question 28

standard tractors with rating of 32-49 hp

Answer 28

standard light

Question 29

standard tractors with rating of 50-69 hp

Answer 29

standard light-medium tractors

Question 30

a standard medium tractor has a power rating of 90 and above true or false

Answer 30

false; it has a power rating of 70 hp to 89 hp

Question 31

standard heavy tractors have a power rating of 100 and above true or false

Answer 31

false; it is 90 and above

Question 32

this is the second major component of the tractor

Answer 32

transmission system

Question 33

common methods of power transmission

Answer 33

1. direct coupling 2. belts and pulleys 3. chains and sprockets 4. gears

Question 34

common methods of power transmission load is directly connected to the engine by some kind of flange device

Answer 34

direct coupling

Question 35

common methods of power transmission transmission efficiency is about 100%

Answer 35

direct coupling

Question 36

in direct coupling, the speed of rotation of the engine is equal to the speed of rotation of load true or false

Answer 36

true

Question 37

common methods of power transmission two pulleys are used and connected to each other by a belt

Answer 37

belts and pulleys

Question 38

belt and pulleys transmission efficiency is same with direct coupling, is it also 100% true or false

Answer 38

false; it is <100%

Question 39

in belt and pulleys, clutch action may be obtained by a ______ ________

Answer 39

third pulley

Question 40

speed ratio between engine and load depends on diameter ratio of the two pulleys true or false

Answer 40

true

Question 41

common methods of power transmission two sprockets are used and connected by a roller chain

Answer 41

chain and sprockets

Question 42

in chain and sprockets, the transmission efficiency is less than or equal to 100% because of?

Answer 42

chain slack

Question 43

in chain and sprockets, the direction of rotation of the two sprockets are different true or false

Answer 43

false; the direction is the same

Question 44

in chain and sprockets, the speed ratio between engine and load depends on the number of teeth ratio of the 2 sprockets true or false

Answer 44

true

Question 45

common methods of power transmission two meshed gears are used

Answer 45

gears

Question 46

transmission efficiency of gears is __________ because of gear slack

Answer 46

less than or equal to 100%

Question 47

in gears, the direction of rotation of the two gears are ________

Answer 47

opposite each other

Question 48

center-to-center distance between the shafts of the gears is dictated by the _______ of the gears

Answer 48

size

Question 49

couplings which permit the disengagement of the coupled shafts during rotation

Answer 49

clutch

Question 50

it is a special arrangement of gears so constructed and located in the transmis system that permits one driving wheel to rotate slower or faster than the other and at the same time propel its share of the load

Answer 50

differential

Question 51

it is an enclosed system of assembled gears that transmits and distributes power from the engine to the different parts of the transmission system

Answer 51

transmission box

Question 52

how is the power from the engine modified?

Answer 52

by changing the speed and direction of rotation of the output shaft through the use of gears

Question 53

through the introduction of ______ in PH agri, most farm operations are being handled with ease and high efficiency

Answer 53

2-wheel tractors

Question 54

these are also called as walk-behind tractors which are used worldwide for small-scale farm, horticultural, industrial, landscaping and home use

Answer 54

2-wheel tractors

Question 55

normally powered by gasoline or diesel engines and are fitted with either rubber tires or steel cage wheels

Answer 55

2-wheel tractor

Question 56

in a 2-wheel tractor, these are used for dry land plowing and transportation

Answer 56

rubber tires

Question 57

in a 2-wheel tractor, these are used for all wet workings

Answer 57

cages wheels

Question 58

it is necessary that a tractor be operated within a narrow range of its speed to develop its rated power and to obtain best fuel economy true or false

Answer 58

true

Question 59

is it necessary that the high speed of the engine be reduced at the final drive to obtain a ____________

Answer 59

practical vehicle speed