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California B2 HVAC Practice Quiz Overview

Are you ready to test your HVAC expertise? This focused quiz helps you master the climate control concepts essential for your California B2 Residential Remodeling exam success.

Exam Details

Time Limit
30 minutes

Questions
15 randomly selected

Question Bank
40 unique questions

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Cost per attempt: 10 Free Attempts

Format: Open-book, but the actual exam is closed.

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1 / 15

1 boiler HP is equal to__________.

A) 33,480 BTU per hour

B) 3,348 BTU per hour

C) 334,800 BTU per hour

D) 334.8 BTU per hour

2 / 15

Each 5 percent reduction in airflow results in a__________ reduction in capacity.

A) 1 percent

B) 2 percent

C) 5 percent

D) 10 percent

3 / 15

Which of the following is not a cause for the compressor running continuously?

A) thermostat differential set too closely

B) shortage of refrigerant

C) compressor too small for load

D) discharge valve leaks

4 / 15

If the compressor has high suction pressure, which of the following cannot be the reason?

A) insufficient gas in system

B) overfeeding of expansion valve

C) compressor too small for evaporation

D) leaky suction valves

5 / 15

Refrigerants are recognized by a standard color code, which color is assigned to R-11.

A) white

B) green

C) yellow

D) orange

6 / 15

1 BTU per hour is equal to __________.

A) 1296 ft. lb. per minute

B) 1.296 ft. lb. per minute

C) 12.96 ft. lb. per minute

D) 129.6 ft. lb. per minute

7 / 15

When working with wiring controls, what happens when you join the red wire to the yellow wire?

A) the compressor will turn off

B) the compressor will turn on

C) the fan will turn on

D) the fan will turn off

8 / 15

Which of the following will not cause refrigerant leaks in a brazed joint?

A) uneven heat

B) oxidizing the copper

C) improper use of flux

D) use of nitrogen

9 / 15

What is a cause for a suction line icing up?

A) low charge

B) high suction pressure

C) expansion valve

D) evaporation

10 / 15

The temperature at which maximum saturation of the air occurs, and water begins to condense out of the air is referred to as__________ .

A) absolute humidity

B) relative humidity

C) specific humidity

D) the dew point

11 / 15

How should a leak in a length of copper tubing be repaired?

A) by replacing the entire section

B) by brazing over the leak

C) by installing a new section at break area

D) by brazing over the area

12 / 15

Metal ducts may not be installed in or within__________ inches of the ground.

A) 6

B) 3

C) 4

D) 8

13 / 15

Which of the following is the normal pressure for liquid petroleum gas?

A) 3.5 in. W-C

B) 8 in. W-C

C) 9.5 in. W-C

D) 11 in. W-C

14 / 15

If the unit is not providing air delivery out of the registers, which of the following could be the reason?

A) fan motor is not operating

B) open power switch

C) blown fuse

D) All of the above

15 / 15

What is the result of the compressor capacity being reduced when the suction pressure is reduced?

A) this balances the evaporator load

B) this tends to increase the temperature

C) this will boil off all the refrigerant

D) this regulates the flow of refrigerant

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California B2 HVAC Practice Quiz Overview

Exam Details

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