Chapter 29 Introduction to Electricity

Question 1

What are the particles that make up a molecule referred to as?

a) Atoms
b) Neutrons
c) Protons
d) Electrons

Answer 1

a) Atoms

Question 2

An electric toaster has 9 amps flowing at 115 volts. What is the wattage?

a) 945 kW
b) 1.035 kW
c) 864.5 kW
d) 1.125 kW

Answer 2

b) 1.035 kW

Question 3

What amount of electrical current can cause death?

a) 200 milliamps
b) 300 milliamps
c) 250 milliamps
d) 150 milliamps

Answer 3

c) 250 milliamps

Question 4

What causes a fluorescent light to flickering on & off accompanied by a shimmering effect during lighting periods?

a) Low supply voltage
b) Too high a current draw
c) Wrong size light bulb
d) Lamp life has been reached and needs to be replaced

Answer 4

d) Lamp life has been reached and needs to be replaced

Question 5

Which of the following are the common types of electric motor housings?

a) Open, drip proof housing
b) Splash-proof housing
c) Totally enclosed housing
d) All of the above

Answer 5

d) All of the above

Question 6

Which of the following agencies is not responsible for testing of appliances?

a) ASME
b) CSA
c) ULC
d) UL

Answer 6

a) ASME