WEEK 1 PART 1 Flashcards
(97 cards)
A device that meters the fuel air and mixes them into harmonious mixture before the mixture enters the combustion
chamber of an engine?
A. Governor
C. Carburetor
B. Air injector
D. None of these
C. Carburetor
- A lever that can be adjusted to admit more or less fuel mixture which could control the speed of the engine.
A. Choke Lever
C. Fuel Cock Lever
B. Decompression Lever
D. Throttle lever
D. Throttle lever
Part of an engine that converts reciprocating motion into rotary motion.
A. Crankshaft
C. Camshaft
B. Piston
D. None of these
A. Crankshaft
It is the act of checking, testing, measuring, repairing and adjusting the engine in order to bring it to the peak
efficiency.
A. Trouble shooting
B. Tune-up
C. Timing adjustment
D. All of these
B. Tune-up
The burning of portion of fuel in the combustion chamber of an engine at a rate faster than the desired.
A. Knocking
C. Misfiring
B. Detonation
D. All of these
B. Detonation
Determine the brake thermal efficiency of a 5-hp gasoline engine consuming 2 liters of fuel in an hour?
A. 19%
C. 30%
D. 35%
A. 19%
A 5-liter engine consumes 11.5 liters of diesel fuel in 30 minutes. The engine is operating with a thermal efficiency
of 18% and is running at 2400 rpm. Calculate the brake torque?
A. 447N-m
C. 173.8N-m
D. 89.4N-m
C. 173.8N-m
What is the engine displacement for a 10 cm by 15 cm engine with 4 cylinders?
A. 5 L
C. 2.5L
B. 4.7L
D. 1.3 L
B. 4.7L
Among the fuels that belong to the paraffin group, this has three carbon atoms in its molecular structure. It is the
main component of LPG:
A. Pentane
B. Ethane
C. Butane
D. Propane
D. Propane
How much oxygen does air have?
A. 23.2% by volume
B. 23.2% by weight
C. 15.3% by weight
D. 15.3% by volume
A. 23.2% by volume
. Select two consecutive farm operations which when done mechanically can increase cropping intensity.
A. Planting – spraying
C. Harvesting – plowing
B. Irrigation – weeding
D. Harvesting – threshing
C. Harvesting – plowing
Tractor size is determined by:
D. Harvesting – threshing
A. Weight, horsepower, and size and number of wheels
B. Implement capacity, weight, and size and number of wheels
C. Weight, horsepower, and implement capacity
D. Weight, horsepower, and size ONLY
C. Weight, horsepower, and implement capacity
Engine oil having high flash and fire point indicates:
A. High boiling point
B. High evaporation rate
C. High heating value
D. All of these
B. High evaporation rate
In paddy field plowing operation using a four-wheel tractor, which of the following is true?
A. Smaller plots are much efficient to plow than larger plots
B. Larger plots are much efficient to plow than smaller plots
C. Smaller or larger plots have the same plowing efficiency
D. None of these
B. Larger plots are much efficient to plow than smaller plots
Currently, this is considered as highly mechanized sector in the Philippines.
A. Rice
B. Sugar
C. Corn
D. Coconut
A. Rice
The conventional system of harvesting and threshing of rice in the Philippines is:
A. Manual harvesting and mechanical threshing
B. Mechanical harvesting and threshing
D. Combining
A. Manual harvesting and mechanical threshing
A special type of DC motor that can move in angular increments in response to digital pulses:
A. Servo motor
B. Brushless motor
c. Steeper motor
D. Shunt motor
c. Steeper motor
An instrument that is equipped with strain gauge installed at the dynamometer shaft to determine the torque
delivered by an engine.
A. Amplifier
B. Transducer
C. Tachometer
D. None of these
B. Transducer
In a load cell, the strain gauge is connected to form a ________ to yield a voltage proportional to the load.
A. Parallel circuit
B. Bridge Circuit
C. Series circuit
D. Voltage divide
B. Bridge Circuit
Transmission of data to a remote line-of-sight point is best done using.
A. Fiber optics
B. Fax
C. E-mail
D. Radio frequency
D. Radio frequency
. When measurement needs to be done to gather sets of data in a defined period of time, what instrument would
you recommend to be included in your instrumentation set-up as an Agricultural and Biosystems Engineer?
A. Data encoder
B. Data compiler
C. Data logger
D. None of these
C. Data logger
During testing of agricultural machines, thermometer sensors should be partially shielded to minimize?
A. Mechanical damage on thermometer sensor
C. Error on the effect of heat of radiation
B. Error from heat of conduction from wall of the machine D. None of these
C. Error on the effect of heat of radiation
The rate of flow of hot gas is to be measured in a duct. As an Agricultural and Biosystems Engineer, what
instrument would you recommend to determine the velocity of the gas?
A. Pitot-tube and manometer
B. Thermoanemometer
C. Current meter
D. None of these
A. Pitot-tube and manometer
An instrument used to measure the amount of water present in a sample.
A. Hygrometer
C. Moisture meter
B. Hydrometer
D. All of these
C. Moisture meter