Refrigeration

40問 • 1年前

Jake Borcelango

通報

問題一覧

The temperature at which a liquid will boil is dependant upon the pressure exerted on the surface of the luquid.

True

Heat conduct at the same rate in all materials.

False

Sensible heat, latent heat and total heat are all different forms of heat.

True

Temperature is defined as

the level or intensity of heat

In theory molecular motion stops at

0 degrees Rankine

A rise in sensible heat causes

a rise in temperature on a thermometer

Latent heat causes

a change of state in a substance

Which of the following heat transfer methods best describe the principle of convection?

Movement of heat by air or fluid

______ heat transfer can be explained aa the energy actually traveling from one molecule to another

Conduction

One British Thermal Unit will raise the temperature of ____ LB of water _____ deg F

1 & 1

The amount of heat (measurein btu's) that is required to raise the temperature of one pound of substance 1 degree F is referred to as

Specific heat

Which of the following btu ratings correctly describes one ton of refrigeration

all of the above

Given two objects of the same size, one chrome painted and one painted black, which of the two will absorb more radiant heat?

Black painted object

Which of the following units is used to express the quantity of heat in a substance in the metric system?

Kilojoule

Heat will flow in what direction

Warm to cold

Heat that is given by an infra red heater is an example of which heat transfer method

Radiation

When soldering an electrical connection with a soldering iron, the method of heat transfer being utilized is

Conduction

Convert -37 dg C to degrees Fahrenheit

-34.6 deg F

Convert 45 deg F to deg Celsius

7.2 deg C

40 deg Kelvin would equal which of the following

-388 deg F

The latent heat of fusion describe a change in state from a

solid to a liquid

Dry Ice is actually made from

carbon dioxide

The method of heat transfer that is known "Hidden Heat" is really

latent heat

The four absolute temperature scales begin at which of the 4 corresponding temperatures

-460 F, -273 C, 0 deg R, 0 K

What is the heat content for only the "latent heat of Evaporation" process, if 1 lb of ice at 0 deg F is turned into 1 lb of steam at 212 deg F

970 BTU's

Using the formula Q = MC(T2-T1), what amount of heat would need to be removed to cool 120 lb of vegetable oil from 95 deg F to 45 deg F if the specific heat of the oil is .4 btu/lb

2400 btu's

What is the heat content required to change 10 lbs of ice at 32 deg F to 10 lbs of water at 32 deg F

1440 BTU

Will glass or copper conduct heat the most rapidly

Copper

Which of the following has the largest specific heat capacity

Water

Conductivity is the

a substances ability to conduct heat

The highgest temperature at which a substance may be liquefied regardless of the pressure applied upon it is referred to as

Critical temperature

Matter exist in three states and its mass?

never changes

Which of the following statement is NOT true?

When heat is added to a substance its temperature always rises

The component in a refrigeration system where the refrigerant boils and absorbs heat is referred to as the;

Evaporator

Refrigerant fluids are

all of the above

In the diagram above which points represent where the latent heag process is taking place?

B to C and D to E

What is the new temp. of 50 lbs of water at 180 deg F if the total heat removed is 4000 BTU?

100 F

The result of applying a force through a distance is termed as

Work

What does the sensing bulb of a thermostatic expansion valve sense

The temperature of the refrigerant at the outlet of the evaporator

The temp. difference multiplied by the number of pounds of water will give?

number of BTU

Electrical

Jake Borcelango · 30問 · 1年前

Electrical

30問 • 1年前

Jake Borcelango

Electronics

Jake Borcelango · 33問 · 1年前

Electronics

33問 • 1年前

Jake Borcelango

問題一覧

The temperature at which a liquid will boil is dependant upon the pressure exerted on the surface of the luquid.

True

Heat conduct at the same rate in all materials.

False

Sensible heat, latent heat and total heat are all different forms of heat.

True

Temperature is defined as

the level or intensity of heat

In theory molecular motion stops at

0 degrees Rankine

A rise in sensible heat causes

a rise in temperature on a thermometer

Latent heat causes

a change of state in a substance

Which of the following heat transfer methods best describe the principle of convection?

Movement of heat by air or fluid

______ heat transfer can be explained aa the energy actually traveling from one molecule to another

Conduction

One British Thermal Unit will raise the temperature of ____ LB of water _____ deg F

1 & 1

The amount of heat (measurein btu's) that is required to raise the temperature of one pound of substance 1 degree F is referred to as

Specific heat

Which of the following btu ratings correctly describes one ton of refrigeration

all of the above

Given two objects of the same size, one chrome painted and one painted black, which of the two will absorb more radiant heat?

Black painted object

Which of the following units is used to express the quantity of heat in a substance in the metric system?

Kilojoule

Heat will flow in what direction

Warm to cold

Heat that is given by an infra red heater is an example of which heat transfer method

Radiation

When soldering an electrical connection with a soldering iron, the method of heat transfer being utilized is

Conduction

Convert -37 dg C to degrees Fahrenheit

-34.6 deg F

Convert 45 deg F to deg Celsius

7.2 deg C

40 deg Kelvin would equal which of the following

-388 deg F

The latent heat of fusion describe a change in state from a

solid to a liquid

Dry Ice is actually made from

carbon dioxide

The method of heat transfer that is known "Hidden Heat" is really

latent heat

The four absolute temperature scales begin at which of the 4 corresponding temperatures

-460 F, -273 C, 0 deg R, 0 K

What is the heat content for only the "latent heat of Evaporation" process, if 1 lb of ice at 0 deg F is turned into 1 lb of steam at 212 deg F

970 BTU's

Using the formula Q = MC(T2-T1), what amount of heat would need to be removed to cool 120 lb of vegetable oil from 95 deg F to 45 deg F if the specific heat of the oil is .4 btu/lb

2400 btu's

What is the heat content required to change 10 lbs of ice at 32 deg F to 10 lbs of water at 32 deg F

1440 BTU

Will glass or copper conduct heat the most rapidly

Copper

Which of the following has the largest specific heat capacity

Water

Conductivity is the

a substances ability to conduct heat

The highgest temperature at which a substance may be liquefied regardless of the pressure applied upon it is referred to as

Critical temperature

Matter exist in three states and its mass?

never changes

Which of the following statement is NOT true?

When heat is added to a substance its temperature always rises

The component in a refrigeration system where the refrigerant boils and absorbs heat is referred to as the;

Evaporator

Refrigerant fluids are

all of the above

In the diagram above which points represent where the latent heag process is taking place?

B to C and D to E

What is the new temp. of 50 lbs of water at 180 deg F if the total heat removed is 4000 BTU?

100 F

The result of applying a force through a distance is termed as

Work

What does the sensing bulb of a thermostatic expansion valve sense

The temperature of the refrigerant at the outlet of the evaporator

The temp. difference multiplied by the number of pounds of water will give?

number of BTU