# UTB2 Basic Math, Electrical & Plumbing Operations Flashcards

The ABFC System revolves around a building block type of system. The largest type of block is a what, which brings together all of the people, facilities, equipment, and supplies required to perform a particular function? (Page 2-1)

Component

To bring together all of the information of the ABFC System, the Naval Facilities Engineering Command published what? (Page 2-1)

NAVFAC P-437

Leaching cesspools should not be placed closer together than how many feet by out-to-out measurement of the walls? (Page 2-17)

20

Leaching cesspools should be used only where the subsoil is porous to a depth of at least how many feet and where the groundwater is below this elevation? (Page 2-17)

8 or 10

Soils that require more than how many minutes for a fall of 1 inch are unsatisfactory for leaching, and some other disposal method must be used? (Page 2-18)

30

In constructing a septic tank, be sure the length of the septic tank is not less than two, or more than three times the width. The liquid depth should not be less than 4 feet for the smaller tanks and how many feet for the larger ones? (Page 2-19)

6

Although septic tanks that are designed properly require little operating attention, they must be inspected periodically; the frequency of inspection is determined by the size of the tank and the population load. The minimum frequency should be once every how many months at periods of high flow? (Page 2-19)

2

Sludge and scum accumulation should not exceed what amount of

the septic tank capacity? (Page 2-19)

1/4

A four-hole burnout field-type latrine is used at most advanced or temporary bases. The burnout latrine is kept in an orderly condition (daily) by camp maintenance personnel or by the sanitation crew assigned. Two people can effectively and efficiently dispose of the excremental waste of how many people? (Page 2-22)

500

The Milnor washer is a fully automatic or manually operated unit with a 50-pound or 100-pound load capacity. It is supplied with a programmable cycle control and an automatic supply injector and uses how many gallons of water per wash cycle? (Page 2-25)

125

What advises the commanding officer on water quality issues? (Page 2-27)

Medical department

The tank trailer, sometimes referred to as a “water buffalo,” has a capacity of how many gallons of water? (Page 2-28)

400

What process is used to disinfect water containers (lyster bags, tank trailers, etc.) and distribution systems initially before they are used or when they have become contaminated? (Page 2-28)

Superchlorination

Superchlorination is accomplished by chlorinating the water in a container or distribution system to at least100 ppm FAC and holding it in the container for how many hours? (Page 2-28)

4

At 77° F the ROWPU can produce 600 gph from fresh or brackish water and how many gph from seawater? (Page 2-35)

400

In order to perform mathematical calculations that involve more than one type of

function, you must perform the calculations in a specific order. Which function is

conducted after the exponent function calculation?

Multiplication

In whole numbers, how is the value of the number determined?

Placement in number

How many steps are used to multiply decimals?

Two

In accordance with rounding rules, if the number in the thousandth place is a 5,

what actions do you take?

Round number up

What is the top number of a fraction called?

Numerator

What is the simplest way to convert fractions to the same denominator?

Multiply their denominators

When the numerator is larger than the denominator after adding fractional

numbers, what is the result called?

Improper fraction

How does one convert a number from a fraction to a decimal?

Divide the numerator by the denominator

What formula is utilized to determine the volume of a rectangular tank?

V = L x W x H

You are tasked to calculate the volume of an elliptical tank; which of the following

formulas would you utilize?

V = H x W x 0.7854 x L

What is defined as the actual movement of electrons through a conductor?

Current

The atom consists of how many parts?

3

Electrons carry what type of electrical charge?

Negative charge

When current is made to flow through a wire, how many different effects does

this create in or around the conductor?

4

As the intensity of the current through the wire increases, what effect (if any)

does this have on the associated magnetic field?

strength of the magnetic field increases

As a UT, how many different types of current will you encounter during a HVAC

installation?

2 AC/DC

How does a battery create output voltage?

Chemical action

If higher amperage is required, how can you increase the amperage output of

batteries?

Wire batteries in parallel

You are using iron as a conductor, and the temperature of the iron increases;

what effect does this have on electron flow?

Move towards the heat

What is the coolest end of a piece of metal referred to as?

Cold Junction

A generator converts mechanical energy into electrical energy by which of the

following principles?

Magnetic induction

Materials with little resistance are also known as what?

Conductors

What is another term used for resistance inherent to the conductor?

Unavoidable resistance

How many factors contribute to the resistance of a conductor?

2

If the cross sectional area of a conductor is increased, what effect does this have

on the resistance of the conductor?

Decreases

You want to obtain the least amount of resistance of a wire; what size conductor

should be utilized?

Short

What type of skin condition offers the highest resistance to low voltage shocks?

Dry

The resistance of the internal body, hand to foot, is approximately between

_________ohms?

400 - 600