PIPE ELEMENTS

Question 1

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

Answer 1

Diversity Factor

Question 2

The output power available and delivered to the switchboard is

Answer 2

Combined Power

Question 3

Heat transfer due to density differential is

Answer 3

Convection

Question 4

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

Answer 4

Load Factor

Question 5

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

Answer 5

Terminal difference

Question 6

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

Answer 6

Surface condenser

Question 7

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

Answer 7

Trap

Question 8

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

Answer 8

Draft System

Question 9

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

Answer 9

Deaerator

Question 10

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:

Answer 10

The molecules have lower speeds and strikes the walls less often

Question 11

The time rate of doing work is

Answer 11

Power

Question 12

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

Answer 12

The law of refrigeration

Question 13

An anergic system is one in which

Answer 13

The system does no work nor is doing work on it

Question 14

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

Answer 14

Economizer

Question 15

What does the area under the pV-diagram represents?

Answer 15

Non-flow work

Question 16

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

Answer 16

Superheated

Question 17

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

Answer 17

Otto

Question 18

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

Answer 18

Willan’s line

Question 19

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

Answer 19

Water walls

Question 20

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

Answer 20

Pour point

Question 21

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

Answer 21

Gasoline

Question 22

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

Answer 22

Kerosene

Question 23

It is a hydrocarbon fluid of high ignition quality

Answer 23

Octane

Question 24

A crack in the earth through which geothermal substance passes.

Answer 24

Fumarole

Question 25

Type of geothermal steam produced in the Philippines.

Answer 25

Liquid dominated

Question 26

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

Answer 26

Sub-cooled

Question 27

Largest fossil-fuel energy resources in the world

Answer 27

Coal

Question 28

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

Answer 28

Superheated

Question 29

The enthalpy of an ideal gas is a function of:

Answer 29

temperature

Question 30

The process that has no work transfer is:

Answer 30

Anergic

Question 31

The theory of changing heat into a mechanical work is:

Answer 31

Thermodynamics

Question 32

A substance that follows the PV=mRT relation is:

Answer 32

Perfect gas

Question 33

The force of gravity per unit volume is known as:

Answer 33

Density

Question 34

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

Answer 34

Carnot

Question 35

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

Answer 35

Rankine cycle

Question 36

The internal combustion engine never works on ___ cycles.

Answer 36

Answer: All of these Rankine Reheat Regenerative

Question 37

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

Answer 37

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

Question 38

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

Answer 38

Orsat

Question 39

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

Answer 39

Answer: None of these Specific density Weight density Relative density

Question 40

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

Answer 40

Thermal equilibrium

Question 41

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

Answer 41

Flash point

Question 42

Which of the following is not a viscosity rating?

Answer 42

Answer: API Stoke Engler Poise

Question 43

What do you call a small piece of energy?

Answer 43

Quantum

Question 44

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:

Answer 44

Quickly absorbs heat from water

Question 45

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

Answer 45

Mixes the air and gasoline properly

Question 46

Alcohol is commonly used as:

Answer 46

Anti-freeze

Question 47

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

Answer 47

Black

Question 48

One boiler horsepower is equivalent to:

Answer 48

33,480 btu/hr

Question 49

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

Answer 49

Carbon dioxide

Question 50

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

Answer 50

Heat head