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FP > I. Agricultural Power and Tractor Operation > Flashcards

I. Agricultural Power and Tractor Operation Flashcards

1
Q
  1. The time rate of doing work or delivering energy, expressed as the amount of work done W or transferred energy divided by the time elapsed t or computed as W/t.

A. Force
B. Power
C. Work
D. Energy

A

Answer: B

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2
Q
  1. What is the battery nominal voltage of a 4-wheel 90-hp tractor?

A. 12 Vac
B. 24 Vdc
C. 9 Vdc
D. 12 Vdc

A

Answer: D

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3
Q
  1. The battery of a 24-volt combine harvester needs to be replaced. Two 12-volt batteries are to be used as its replacement. What should be the connection of the batteries?

A. Series
B. Parallel
C. Series-Parallel
D. Any connection

A

Answer: A

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4
Q
  1. The 12-volt battery of a boom sprayer was drained. A 12-volt battery attached to a vehicle can be used for starting the engine. Jumper wires are available. What should be the connection of the two batteries to facilitate starting?

A. Series
B. Parallel
C. Series-Parallel
D. Any connection

A

Answer: B

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5
Q
  1. A tractor cannot start due to defective battery. It is being pushed by workers while lever is set to first gear. What should be foot-pressed and released abruptly to start engine?

A. Brake
B. Clutch
C. Clutch and Brake
D. Accelerator

A

Answer: B

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6
Q
  1. To gradually move a tractor from stop, what should be released while pressing the accelerator?

A. Brake
B. Clutch
C. Clutch and Brake
D. Lever

A

Answer: B

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7
Q
  1. To roll the tractor set at first gear in a flat land, what should be foot-pressed?

A. Brake
B. Clutch
C. Clutch and Brake
D. Accelerator

A

Answer: D

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8
Q
  1. To slow down the tractor running at first gear in a flat land, what should be foot-pressed?

A. Brake
B. Clutch
C. Clutch and Brake
D. Accelerator

A

Answer: B (Clutch is better than clutch and Brake since purpose is only to slow down)

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9
Q
  1. To gradually stop a fast running tractor, what should be foot-pressed?

A. Brake
B. Clutch
C. Clutch and Brake
D. Accelerator

A

Answer: C

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10
Q
  1. What is the safest gear setting for a descending tractor in a 10% slope?

A. Neutral
B. Third gear
C. Second gear
D. First gear

A

Answer: D

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11
Q
  1. In a routinary check before using the tractor, what should be checked first?

A. Fuel
B. Water
C. Brake
D. Oil

A

Answer: C

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12
Q
  1. To roll a tractor from stop and neutral position with engine off in a sloping land, what should be foot-pressed?

A. Brake
B. Clutch
C. Clutch and Brake
D. Lever

A

Answer: B

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13
Q
  1. The connection to the tractor of an erratic battery is to be stopped quickly. What battery terminal should be disconnected first?

A. Positive
B. Negative
C. Both terminals
D. Any terminal

A

Answer: A

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14
Q
  1. A new battery is to be installed to a tractor. What battery terminal should be connected first?

A. Positive
B. Negative
C. Both terminals
D. Any terminal

A

Answer: B

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15
Q
  1. The battery drains while tractor is not in use. What battery terminal should be disconnected when tractor is not in use?

A. Positive
B. Negative
C. Both terminals
D. Any terminal

A

Answer: A

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16
Q
  1. What kind of hitch is best for a non-hydraulic disk plow?

A. 1-point hitch
B. 2-point hitch
C. 3-point hitch
D. 4-point hitch

A

Answer: C

17
Q
  1. What kind of hitch is best for a tractor trailer?

A. 1-point hitch
B. 2-point hitch
C. 3-point hitch
D. 4-point hitch

A

Answer: A

18
Q
  1. A 24-volt battery of a pineapple harvesting conveyor needs to be charged on field using 12-volt solar modules. What is the minimum number of solar modules required?

A. One
B. Two
C. Three
D. Four

A

Answer: B
Solution: Minimum no. of modules = No. of solar modules in series = 24v/12v = 2 modules

19
Q
  1. A 12-volt battery of a boom sprayer needs to be charged on field using 6-volt solar modules with 2 modules in
    parallel to speed up charging. How many solar modules are required?

A. Two
B. Four
C. Six
D. Eight

A

Answer: B
Solution:No. of solar modules in series = 12v/6v = 2 modules
Total no. of solar modules = Modules in series x Modules in parallel = 2x2 = 4 modules

20
Q
  1. What is the actual horsepower of a tractor which can do 149.2 kw-hrs of work in 2 hours?

A. 74.6 hp
B. 57.5 hp
C. 100 hp
D. 105 hp

A 
Answer: C
Solution:
P = W/t x conversion factor
= 149.2 kw-hrs/2hrs x 1 hp/0.746 kw
= 100 hp
21
Q
  1. What is the electrical energy consumption of a 30-kw vermin cast production shredder plugged in a 220-volt
    source if it requires 3 hours to shred 3 tonnes of farm waste?

A. 0.02 kwh/kg
B. 0.03 kwh/kg
C. 0.05 kwh/kg
D. 0.08 kwh/kg

A 
Answer: B
Solution:
Ec = PcTo / Wi
= 30 kw (3 h) / 3,000 kg
= 0.03 kwh/kg

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