OIC-EW MARINA REVIEWER / QUIZ COMPETENCE 4 - PART 8 - Seaman Kowts

COMPETENCE 4 -Operate Main and Auxiliary Machinery and – Associated Control Systems

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#1. The transfer of heat through electromagnetic flue wave an always travel with the gas is called the _______.

volt-amp transfer

thermal convection

radiation heat transfer

universal conduction

Incorrect!

#2. Any liquid with a flash point above 80° is a ________.

flammable liquid

combustible liquid

coal base oil

synthetic base oil

Incorrect!

#3. Which of the following statements represents the function the nozzle assembly performs in an impulse turbine?

Converts the steam's thermal energy into kinetic energy by increasing its velocity, and directing if against the rotor blades

Provides an area where the steam is prevented from expanding prior to being directed against the rotor blades

Increase the velocity of the steam without a pressure drop across the impulse blading

Converts the potential energy of steam thermal energy by increasing its velocity and directing it against the turbine bladders

Incorrect!

#4. On vessels using reach rods to manually control the tank valves, one turn of the hand wheel on deck will produce how many turns of the valve stem at the valve?

One-fourth of a turn

One-half of a turn

Three-fourths of a turn

One turn

Incorrect!

#5. The acceleration of the body is directly proportional to the force applied to it inversely is known as ________.

the law of inertia

Newton's second law

mutual inductance law

Newton's law of action and reaction

Incorrect!

#6. The heat required to raise the temperature of 1 pound of any particular substance 1° F is called _______.

its latent heat

a British thermal unit

its specific heat

its adiabatic heat

Incorrect!

#7. Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?

Radiation

Conduction

Natural convection

Any of the options

Incorrect!

#8. What is the other name of inertia of an area?

Third moment of area

Dimensional moment of area

Second moment area

Sectional moment of area

Incorrect!

#9. The greatest difference between absorbent and adsorbent filters is that absorbent filters ________.

will remove additives from the lube oil

soak up liquid contaminants directly into the filter media

do not create pressure drops in the lube oil system

attract or have liquid contaminants stick to the surface of the filter media

Incorrect!

#10. What is the main purpose of lubrication?

To reduce wear and tear

To carry heat away from moving parts

To create free passage of oil

To increase efficiency of engine

Incorrect!

#11. Which of the following listed methods may be heat transferred from one body to another?

Radiation

Convection

Conduction

all of the options

Incorrect!

#12. The component which is used to thoroughly separate small, fine, dust-like particulate contamination from hydraulic fluid is a/an _______.

accumulator

filter

separator

strainer

Incorrect!

#13. Which of the following statements is correct regarding Archimedes principles stating that the resultant pressure acting on a body when immersed in a fluid?

Will cause the body to have a reduction in mass equal in magnitude to the effective mass of the structure located above the line floatation

Is proportional in magnitude and direction, regardless of the direction originally developed when the object was submerged

Is applied equal and in all directions throughout the vessel in which it is Contained

Acts vertically upward through the center of gravity of the displaced fluid and is equal to the weight of the fluid displaced

Incorrect!

#14. Demulsibility is defined as ________.

the ability of an oil separated from water

the measure of the water in the lube oil

the temperature at which oil flows rapidly

an emulsion of different oil grades

Incorrect!

#15. What is a compression ratio?

Volume clearance

Piston clearance

Ratio of the piston and liner

Ratio of the piston displacement plus clearance

Incorrect!

#16. A lube oil filter can be used to remove most contaminants from lube oil. What is the contaminant which will remain in the lube oil after filtering?

acid

fuel oil

sediment

water

Incorrect!

#17. What is more nearly practical process?

Polytrophic operation

Adiabatic operation

Isothermal operation

Poly-is operation

Incorrect!

#18. In the conservation of energy the heat rejected must be equal to _______.

heat added

heat output

heat partially added

heat not in thermal conductor

Incorrect!

#19. In addition to a pressure gauge and a relief valve, an air receiver should be fitted with a _____.

sight glass and manhole

thermometer and sight glass

thermometer and manhole

drain connection

Incorrect!

#20. Which of the following statements is correct concerning heat transfer?

Heat is given off from a high temperature region known as a heat sink

Heat transfer rate is affected most by the size of the heat sink involved

Heat transfer rate is affected most by the temperature difference between the heat source and the heat sink

Heat transfer by radiation will only by mass motion of a fluid substance

Incorrect!

#21. Which of the listed statements best describes specific heat?

The amount of heat required to change the temperature of one pound of a material, one degree

The amount of heat required to change the temperature of one pound of ice, one degree F.

The amount of heat required to change the temperature of one pound butter, one degree F material, one degree

All of the options

Incorrect!

#22. Which of the following conditions must exist for heat to flow from one object to another?

the two objects must be in physical contact

the two objects must be the same size

there must be an existing temperature differential

there must be an existing weight differential

Incorrect!

#23. A measure of resistance to rotational acceleration called ________.

moment of inertia

mass moment of inertia

radius of gyration

mass moment of inertia to composite bodies

Incorrect!

#24. In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called_______.

evaporation

distillation

dehydration

condensation

Incorrect!

#25. A machine capable of producing 1650 foot-pounds of work per second is considered to produce how much horsepower?

1 hp

2 hp

3 hp

4 hp

Incorrect!

#26. The ratio of the weight of moisture contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, and expressed in grains called the __________.

absolute humidity

relative humidity

specific humidity

total humidity

Incorrect!

#27. When air contains some moisture, but is not saturated; the dew point temperature is :

between the wet and dry bulb temperature

equal to the total heat of air

higher than the wet bulb temperature

lower than the dry bulb temperature

Incorrect!

#28. Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?

Hydrochloric acid

Chlorine

Sulfuric acid

Zinc chromate

Incorrect!

#29. Which of the additives listed is used to reduce the foaming tendency of lube oil?

Emulsifiers

Suppressants

Depressants

Extreme pressure

Incorrect!

#30. It is the usual unit for moment of inertia of an area millimeter?

Square

Cube

To the fourth power

To the fifth power

Incorrect!

Finish

There are 30 questions for the actual examination for Competence 4 for OIC-EW with a passing rate of 70%. This means that you are only allowed to make 9 mistakes.

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Results

#1. The transfer of heat through electromagnetic flue wave an always travel with the gas is called the _______.

#2. Any liquid with a flash point above 80° is a ________.

#3. Which of the following statements represents the function the nozzle assembly performs in an impulse turbine?

#4. On vessels using reach rods to manually control the tank valves, one turn of the hand wheel on deck will produce how many turns of the valve stem at the valve?

#5. The acceleration of the body is directly proportional to the force applied to it inversely is known as ________.

#6. The heat required to raise the temperature of 1 pound of any particular substance 1° F is called _______.

#7. Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?

#8. What is the other name of inertia of an area?

#9. The greatest difference between absorbent and adsorbent filters is that absorbent filters ________.

#10. What is the main purpose of lubrication?

#11. Which of the following listed methods may be heat transferred from one body to another?

#12. The component which is used to thoroughly separate small, fine, dust-like particulate contamination from hydraulic fluid is a/an _______.

#13. Which of the following statements is correct regarding Archimedes principles stating that the resultant pressure acting on a body when immersed in a fluid?

#14. Demulsibility is defined as ________.

#15. What is a compression ratio?

#16. A lube oil filter can be used to remove most contaminants from lube oil. What is the contaminant which will remain in the lube oil after filtering?

#17. What is more nearly practical process?

#18. In the conservation of energy the heat rejected must be equal to _______.

#19. In addition to a pressure gauge and a relief valve, an air receiver should be fitted with a _____.

#20. Which of the following statements is correct concerning heat transfer?

#21. Which of the listed statements best describes specific heat?

#22. Which of the following conditions must exist for heat to flow from one object to another?

#23. A measure of resistance to rotational acceleration called ________.

#24. In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called_______.

#25. A machine capable of producing 1650 foot-pounds of work per second is considered to produce how much horsepower?

#26. The ratio of the weight of moisture contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, and expressed in grains called the __________.

#27. When air contains some moisture, but is not saturated; the dew point temperature is :

#28. Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?

#29. Which of the additives listed is used to reduce the foaming tendency of lube oil?

#30. It is the usual unit for moment of inertia of an area millimeter?

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