📝 [PIPE] QB ID: 0418 | PIPE Elements No. 06

A vertical turbine pump with the jump and motor closed coupled and design to be installed underground, as in the case of a deepwell pump.

An underground formation that contains sufficient saturated permeable material to yield significant quantities of water.

A timber, concrete or masonry enclosure having a screened inlet kept partially filled with water by an open body of water such as pond, lake, or steams.

Water which is available from well, driven into water bearing subsurface strata (aquifer).

Imparts velocity to the liquid, resulting from centrifugal force as the impeller is rotated.

A means of throttling the leakage which would otherwise occur at the point of entry of the shaft into the casing.

Protect the shaft where it passes through the stuffing box.

The ratio of the actual vapor density to the vapor density at saturation.

An expression of the mass of water vapor per unit mass of dry air.

Which of the following is equivalent to 1 lb?

The bypass factor for large commercial units.

Sometimes called specific humidity.

For any given barometric pressure, the humidity ratio is a function of the _____.

The humidity ratio corresponding to any given dew point temperature varies with the total barometric pressure, increasing as the barometric pressure _____.

The ratio of the mass of water vapor in the air per unit mass of dry to the mass of water vapor requires for saturation of the same air sample.

A closed channel excavated through an obstruction such as a ridge of higher land between the dam and the powerhouse is called _____.

The small reservoir in which the water level rises or falls to reduce the pressure swings so that they are not transmitted to the closed conduit is called _____.

The regulation of the water in the form of a relatively small pond of reservoir provided at the plant is called _____.

A structure used to relieve the reservoir of excess water.

The fluid pressure difference created by column of heated gas, as by chimney is called

The pressure rise from greater to a lesser vacuum, created in a gas loop between stream generator outlet and chimney by means of a fan is called _____.

Also known as Francis turbines or radial flow turbines.

The turbine, draft tube and all related parts comprise what is known as _____.

When a forebay is not part of the generating plant’s design, it will be desirable to provide a _____ in order to relieve the effects of rapid changes in flowrate.

To keep the deflected jet out of the way of the incoming jet, the actual angle is limited to approximately _____.

The minimum fluid energy required at the pump inlet for satisfactory operation is known as _____.

Throttling the input line to a pump and venting or evacuating the receiving tank:

Traditional reciprocating pumps with pistons and rods can be either single-acting or double acting and are suitable up to approximately _____.

In a sensible heating process the final humidity ratio is:

In an adiabatic saturation process the final relative humidity is:

Cooling and dehumidifying process is commonly used for:

An adiabatic saturation process is also known as:

For efficient operation, the condensing temperature should not be lower than _____.

For efficient operation, the condensing temperature should not be more than _____.

The process of simultaneous heating and dehumidifying is known as:

The process in increasing the dry-bulb temperature without changing the humidity ratio is known as:

The process of simultaneous cooling and decreasing of humidity ratio is known as:

The process of cooling without changing the humidity ratio is known as:

The process of simultaneous heating and humidifying ratio is known as:

Which of the following cycle is bulky and involves toxic fluids hence it is unsuitable for home and auto cooling:

Which of the following refrigeration cycle is practical when large quantities of waste or inexpensive heat energy are available?

Condensers used in small and medium sized up to approximately 100 tons refrigerators

An evaporator in a refrigeration unit makes use of which heat transfer modes?

Energy added to a vapor is known as a latent heat of vaporization.

The vaporization process that occurs at temperature below the triple point of a substance is called _____.

As the pressure increases, the amount of work it can do increases and its enthalpy _____.

During the compression process, the internal energy of the refrigerant vapor _____.

The measure of the amount of thermal energy transfer occurring within the evaporator per unit mass under stated conditions.

The peak power that can be produced on an occasional basis.

A value of a property that includes the effect of friction is known as:

Forced draft fans are run at relatively high speeds in the range of _____.

Chimneys that rely on natural draft are sometimes referred to as _____.

For realistic problems, the achievable stack effect probably should be considered to be _____.

In a balanced system, the available draft is _____.

It is a device used for atomizing or cracking fuel oil and through which the fuel oil is injected into the working cylinders of Diesel engines.

The device that transfer thermal energy from one fluid to another.

Undergrounds system of hot water and/or steam.

The process of returning spent geothermal fluids to the subsurface is called _____.

The simultaneous demand of all customers required at any specified point in an electric power system is called _____.

The electricity generating plants that are operated to meet the peak or maximum load on the system are called _____.

The capacity of a substance to transmit a fluid is called _____.

The ratio of the aggregate volume pore spaces in rock or soil to its total volume is called _____.

Cooling efficiency is typically _____.

Forced draft towers can cool the water to within _____.

The higher the wet bulb temperatures, _____.

Define the relative difficulty in cooling, essentially the relative amount of contact area or fill volume required.

Evaporation loss can be calculated from the humidity ratio increase and is approximately _____ decrease in water temperature.

Water lost in small droplet and carried away by the air flow.

The ratio of total dissolved solids in the recirculating water to the total dissolved solids in the make-up water.

A dry-cooling tower where steam travels through large diameter “trunks” to a cross-flow heat exchanger where it is condensed and cooled by the cooler air.

The minimum fluid energy required at the pump inlet for satisfactory operation is known as _____.

The actual fluid energy at the inlet:

Throttling the input line to a pump and venting or evacuating the receiver tank _____.

Traditional reciprocating pumps with pistons and rods can be either single-acting or double acting and are suitable up to approximately _____.

Plunger pumps are only single-acting and are suitable up to approximately _____.

The ratio of the actual to the ideal heat transfer coefficient.

The ratio of the maximum to minimum mass steam flow rates at which the temperature can be accurately contained by the desuperheater.

With a reversible regenerator, the thermal efficiency of the Ericsson cycle is _____ to that of the Carnot cycle.

The electron magnetic radiation emitted from the daughter nucleus when an alpha particles leaves the patent atom.

Which of the following statement is a scheme for energy storage?

A reactor that employs fast or high energy neutrons and contains no moderator is called _____.

A reactor that utilizes slow moving neutrons.

The water bearing stratum of permeable sand, rock, or gravel is called _____.

The electricity generating units that are operated to meet the constant or minimum load on the system is called _____.

The effectiveness of a body as a thermal radiator at a given temperature.

What are the main components in a combined cycle power plant?

The size of a steam reciprocating pumps is generally designed by a three-digits number size as 646. The first digit designates:

The power required to deliver a given quantity of fluid against a given head with no losses in the pump is called _____.

Fluid that are pumped in processing work are frequently more viscous than water. Which of the following statement is correct?

The law that states “Entropy of all perfect crystalline solids is zero at absolute zero temperature”.

An expression of the mass of water vapor per unit mass of dry air.

Which of the following is equivalent to 1 lb?

The locus of states that the same value of stagnation enthalpy and mass flux is called _____.

Combining the conservation of mass and momentum equations into a single equation and plotting it on the h-s diagram yield a curve called _____.

Across the shock, the stagnation temperature of an ideal gas _____.

Which of the following types of air dryers works by absorbing moisture on a solid desiccant or drying material such as activated alumina, silicon gel or molecular sieve?

When two bodies, isolated from other environment, are in thermal equilibrium with a third body, the two are in thermal equilibrium with each other.

The sum of the energies of all the molecules in a system where energies appear in several complex forms is the _____.

The Carnot refrigeration cycle includes all of the following process except:

The maximum possible work that can be obtained a cycle operating between two reservoirs is found from _____.