• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/72

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

72 Cards in this Set

  • Front
  • Back

The following expresses the difference between a feature and benefit:

-A feature is a special characteristic of a product




-A benefit is the value the customer receives from using the feature

The temperature most often used by customers when discussing human comfort is:

A dry bulb reading

A dictionary defines an honest person as:

One who is free from fraud or deception, credible, and is marked with integrity.

The unit of electrical pressure is the:

Volt

Each leg of line voltage only is typically represented by the:

Two lines one the side of a ladder diagram

Humidifiers are used with heating systems to raise:

Relative humidity and increase customer comfort

The most important point made by the following




(There are many factors the contribute to comfort in a home or building. Temperature, humidity, and cleanliness of the air are just a few examples of these factors)

Is comfort requires more than one temperature control

Care should be taken before sawing basement walls that are part of the original construction of a home because these walls are typically:

Load bearing

Refrigerant vapors in high concentrations should not be inhaled since they:

May cause heart irregularities or unconsciousness

The damper used with a bypass humidifier must be open in what season:

Winter

Capillary tubing should only be cut to length using a:

Triangular or knife-edge file

A voltmeter is connected for taking voltage readings by connecting the voltmeter in SERIES or PARALLEL with the voltage to be measured?

Parallel

A motor can have two, four, or more poles. What happens with having fewer number of poles?

The motor turns faster

The following is true of a tapped multi-speed motor driving a supply blower:

Changing the connected tap changes the CFM even under no blower load

The following is an example of a wet bulb thermometer:

A convention thermometer with a moistened cloth wick covering its sensor

Electrical current is measured in:

Amperes

According to health and safety regulations, when climbing up or down a ladder the worker must:

Always face the ladder

Read the following:




1.insert red test lead plug into red common jack on instrument


2.insert black test lead plug into black MV jack on instrument


3.connect the test probes across the circuit to be measured


4.Read milivolt on the 0-50 scale

The following describes a basic unwritten instruction that is not included but must always be followed by the technician to be certain the instrument you are using can be used with these instructions.

According to ohms law, when the voltage to an electric heating element is increased by 10%:

The current through the element increases by 10%

Why should hacksaws never be used to cut copper tubing:

Because saw chips can remain inside the tubing

What kind of process is combustion:

Chemical

Because they are very accurate, liquid filled thermometers are often used in:

Sling psychrometers

A pictorial ________ is useful for quickly visualizing each component in a unit:

Schematic

A sling psychrometer can measure wet bulb and dry bulb temperatures for what reasons?

To compute measurements of relative humidity

Motors above five horsepower that are used with belt driven fans are typically:

240/460 Three phase

As static pressure increases in a system with a constant airflow blower motor the amp draw __________ with the static

Increases

A technician works for a service company that is portrayed negatively in a news piece. After hearing all available facts, the technician decides the company committed no wrong and should be supported. The character trait being shown by the technician is:

Perseverance

The following is true of a DC circuit:

Currrent flows in one direction in a DC circuit

The federal regulatory agency with jurisdiction over the shipping and labeling of refrigerants is:

Department of Transportation

As a general rule, a continuity check using an ohmmeter shows continuity by:

A reading at zero or a specific resistance

An analog ____ is an electrical meter that displays volts, ohms or milliamperes on an analog scale:

VOM

A digital electrical multimeter marked ___________


Will automatically set itself for range of approximate value when set for volts, amps, or ohms:

Auto ranging

The input side of a step down transformer is also properly called:

The primary side

The meter setting a technician should use to determine whether or not a set of contacts are open in an energized circuit:

Volt setting

A condition that must be met to make an agreement legally binding is the:

Agreement must be in writing

In the following paragraph taken from a technicians note, "the rely appeared to be overheated. Replacing it should fix the problem."

He is stating his opinion

Pictorial wiring diagrams generally show components in their:

Approximate positions in the equipment

To change the direction of rotation of a fan driven by a three phase induction motor:

It is necessary to reverse the connections of only two motor leads

Lever type tubing benders are best used for:

Soft drawn copper tubing

A coil of wire moving through a magnetic field will generate a:

Current in the wire

Capacitor start-induction run motors uses this method for increasing their starting torque:

A start capacitor and start relay contacts in series with the start winding

Any pressure exerted by a liquid or gas on a surface is typically measured as a reading relative to:

Atmospheric pressure

When possible, avoid working on a slate tile roof because:

There is a high risk of slipping and falling on this type of roof

10 is what percentage of 30

33.33%

The primary purpose for bringing outdoor air into a residential air distribution system is to:

Provide fresh air to a conditioned space

Field wired 120 and 240v wiring is typically shown on a wiring diagram as:

Solid heavy lines

Which particular right triangle has two equal sides:

45 degree triangle

In most field wiring diagrams the color coding of wiring remains _______.

Consistent

Power is measured in

Watts

Customers often volunteer to advise a service technician on what they believe is the problem with a unit that is not operating properly:

The technician should consider the customers opinion to see if they have merit

The phrase "educate me and I will buy from you" means:

If the customer learns more about how you can fill their needs, they are more likely to buy your products

The following is an acceptable practice to follow when selecting and using a screwdriver:

Use a screwdriver for the specific screw type and fastening method for which it was designed

The following is proper for the care of hand tools:

Clean and wipe them regularly

A ground fault circuit interrupter (GFCI) receptacle is a receptacle that is used to protect against:

Electrical shocks from defective appliances and extension cords

A ceiling which slopes upward from the walls to the center of the room is referred to as a:

Vaulted ceiling

A slap is a type of residential flooring over what section of the residence:

Crawlspace

Operating ______ is a consideration in the location of a heating unit because excessive noise could be disruptive to the customer:

Sound

3.41 BTU of heat is created by:

1 Watt

A capacitor in an AC circuit is often used to:

Increase starting torque in some motors

Assuming that a circuit is energized the voltage that will be read across an open switch is the:

Applied voltage

A technician should measure resistance with a digital ohmmeter by:

Disconnecting the power, electrically isolate the load, connect leads across the load

What is the method of heat transfer that does NOT require fluids or solids:

Radiation

The following is an example of a wet bulb thermometer:

A conventional thermometer with a moistened cloth with covering its sensor

The temperature at which water vapor condenses is called:

The dew point

A tool specifically made to thread a hole in metal is a:

Tap

The farm of an electric motor is grounded to maintain the farm at ____ potentaial

Zero

When making a flare, the height of the tubing above the flaring block is critical because:

A flare with too much height will not fit into the flare nut

Sheathing is used over roof beams or rafters as a:

Base for the roofing

A class C fire extinguisher is used to extinguish:

Electrical fires

What unit is sound level measured in:

Decibels

The following expresses the difference between a feature and a benefit:

A feature is a special characteristic of a product




A benefit is the value the customer receives from using the feature

Construction fall protection is required whenever working over a minimum of how high:

4 feet