Deck 7: Heating Systems

Question 1

A volt is a measure of electrical:

A) flow.
B) resistance.
C) power.
D) pressure.

Answer 1

pressure.

Question 2

An amp (or ampere) is a measure of electrical:

A) resistance.
B) power.
C) pressure.
D) flow.

Answer 2

flow.

Question 3

An ohm is measure of electrical:

A) power.
B) flow.
C) pressure.
D) resistance.

Answer 3

resistance.

Question 4

The part of a fluorescent lamp that controls the electricity going to the tube is called the:

A) base.
B) ballast.
C) prongs.
D) filament.

Question 5

Which of the following indicates the "warmness"or "coolness"of the color of light from an artificial source?

A) color rendering index
B) temperature
C) lumen output
D) correlated color temperature

Question 6

You have a television that uses 80 watts plugged into a 110-volt electrical circuit. How many amps does the television draw?

A) 7.3 amps
B) 13.8 amps
C) 1.38 amps
D) 0.73 amps

Question 7

You have a coffee maker plugged into a 110-volt circuit. You know that it draws 2.3 amps. What is the coffee maker's resistance?

A) 4.78 ohms
B) 73.9 ohms
C) 47.8 ohms
D) 7.39 ohms

Question 8

Which of the following is not a disadvantage of wind power?

A) Windmills can generate a lot of noise.
B) If it's not windy, you do not generate electricity.
C) Wind power requires the use of a turbine to generate electricity.
D) Windy places are often from the electrical grid.

Question 9

Which of the following is an advantage of an uninterruptible power supply (UPS) system?

A) It uses natural gas as a fuel to provide power.
B) It provides a very clean electrical supply.
C) It provides a continuous power supply in the event of a power outage.
D) Both B and C

Question 10

Electrical current generated by a battery is a form of direct current.

Question 11

Alternating current is an electrical current that is supplied with both positive and negative polarity.

Question 12

Photovoltaic systems are only suitable for use in areas with a lot of sunlight all the time.