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PIPE > PIPE ELEMENTS > Flashcards

PIPE ELEMENTS Flashcards

Basic sciences,...

1
Q

The ratio of the sum of individual demands of the system to the over-all demand of the whole system is

A

Diversity Factor

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2
Q

The output power available and delivered to the switchboard is

A

Combined Power

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3
Q

Heat transfer due to density differential is

A

Convection

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4
Q

The ratio of average load to peak load over a designated time is called

A

Load Factor

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5
Q

The difference between the temperature leaving the unit and the temperature of the feedwater entering

A

Terminal difference

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6
Q

It is the type of heat exchanger wherein the steam is not mixed or contaminated with cooling water in the condensing process

A

Surface condenser

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7
Q

A device that automatically allows accumulated liquid to pass from a higher pressure to a lower pressure region

A

Trap

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8
Q

It supply the required air combustion and to remove the product of combustion

A

Draft System

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9
Q

A contact heater that is especially designed to remove the non-condensable gases

A

Deaerator

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10
Q

The volume of a gas is held constant while it temperature is lowered. The pressure of the gas exerts on the walls of its container decreases because:

A

The molecules have lower speeds and strikes the walls less often

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11
Q

The time rate of doing work is

A

Power

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12
Q

The natural direction of heat flow is from a low temperature reservoir to a high temperature reservoir. The fact is incorporated in

A

The law of refrigeration

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13
Q

An anergic system is one in which

A

The system does no work nor is doing work on it

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14
Q

A heat exchanger that pre-heats feedwater using the heat of the flue gas is:

A

Economizer

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15
Q

What does the area under the pV-diagram represents?

A

Non-flow work

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16
Q

What is the condition of a fluid if its temperature is higher than the saturation temperature of the existing pressure?

A

Superheated

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17
Q

The engine cycle operating on two adiabatic and two isometric processes is:

A

Otto

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18
Q

A straight line showing the relation between steam consumption and the load.

A

Willan’s line

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19
Q

Water tubes installed in the furnace to protect the furnace against the high temperature.

A

Water walls

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20
Q

It is the lower temperature at which oil will flow under prescribes condition.

A

Pour point

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21
Q

It is a refined petroleum naphtha which by its composition is suitable for use as a carburetant in internal combustion engine.

A

Gasoline

22
Q

It is defined as a petroleum distillate having a flash point not below 22.8.

A

Kerosene

23
Q

It is a hydrocarbon fluid of high ignition quality

A

Octane

24
Q

A crack in the earth through which geothermal substance passes.

A

Fumarole

25
Q

Type of geothermal steam produced in the Philippines.

A

Liquid dominated

26
Q

Is one whose temperature is below the saturation temperature corresponding to its pressure.

A

Sub-cooled

27
Q

Largest fossil-fuel energy resources in the world

A

Coal

28
Q

What is the condition of a fluid if its temperature is higher than the saturation temperature of the existing pressure?

A

Superheated

29
Q

The enthalpy of an ideal gas is a function of:

A

temperature

30
Q

The process that has no work transfer is:

A

Anergic

31
Q

The theory of changing heat into a mechanical work is:

A

Thermodynamics

32
Q

A substance that follows the PV=mRT relation is:

A

Perfect gas

33
Q

The force of gravity per unit volume is known as:

A

Density

34
Q

It is the cycle usually used as reference cycle in thermodynamics:

A

Carnot

35
Q

A cycle used or patterned in the construction of a steam power plant is:

A

Rankine cycle

36
Q

The internal combustion engine never works on ___ cycles.

A

Answer: All of these

Rankine
Reheat
Regenerative

37
Q

The force that tends to draw a body towards the center about which it is rotating:

A

The force that tends to draw a body towards the center about which it is rotating:

38
Q

What is the apparatus used in the analysis of the exhaust gases?

A

Orsat

39
Q

The standard acceleration due to gravity (in English units) is:

A

Answer: None of these

Specific density
Weight density
Relative density

40
Q

The measure of fluid’s resistance when acted upon by an external force is called:

A

Thermal equilibrium

41
Q

Temperature at which an oil gives off vapors that mixes with air and form an inflammable mixture

A

Flash point

42
Q

Which of the following is not a viscosity rating?

A

Answer: API

Stoke
Engler
Poise

43
Q

What do you call a small piece of energy?

A

Quantum

44
Q

If boiler water is poured into drinking glass, the glass is likely to crack. If however, a metal spoon is first placed, it is much less likely to crack. The reason is:

A

Quickly absorbs heat from water

45
Q

The function of the carburetor on a gasoline engine is to:

A

Mixes the air and gasoline properly

46
Q

Alcohol is commonly used as:

A

Anti-freeze

47
Q

Which of the following surfaces will absorb the greatest percentage of radiant heat?

A

Black

48
Q

One boiler horsepower is equivalent to:

A

33,480 btu/hr

49
Q

The existence of ___ gas in the atmosphere causes a greenhouse effect.

A

Carbon dioxide

50
Q

It is the difference between the saturation temperature of the motivating fluid and the saturation temperature of the vapour.

A

Heat head

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