Batteries

Batteries

a) do not pose any immediate electrical hazards
b) produce a steady AC voltage
c) produce a varying DC voltage
d) produce a steady DC voltage
e) produce a varying AC voltage



Answer: D

When using an electrical meter to check that a circuit is safe to work on, it is important to verify the proper scale, current, or both that is being used because

When using an electrical meter to check that a circuit is safe to work on, it is important to verify the proper scale, current, or both that is being used because

a) it may appear that no voltage or current is present and therefore safe
b) the meter will be damaged
c) the user will be subjecting himself or herself to danger
d) the main high voltage transformer circuit will be opened
e) electrical wiring will be damaged by fire or overheating

Answer: A

A power meter

A power meter

a) reads the actual power consumed
b) does not require a multiplying factor
c) reads only a small percentage of the actual load
d) will calculate the actual cost of the power
e) does not take into account the system voltage





Answer: D

Increasing load on a motor or other electrical device is indicated by?

Increasing load on a motor or other electrical device is indicated by?

a. Increased current flow
b. Increased voltage
c. Increased resistance
d. All of the above





Answer: A

Which electrical system is used to test with AC? 1. House wiring 2. Most power plant motors 3. Automotive wiring 4. Power plant battery vault

Which electrical system is used to test with AC?
1. House wiring
2. Most power plant motors
3. Automotive wiring
4. Power plant battery vault

a. 1,2,3
b. 2,4
c. 1
d. 4
e. 1,2,3,4





Answer: A

Which electrical system is used to test with DC? 1. House wiring 2. Most power plant motors 3. Automotive wiring 4. Power plant battery vault

Which electrical system is used to test with DC?
1. House wiring
2. Most power plant motors
3. Automotive wiring
4. Power plant battery vault

a. 1,2
b. 2,4
c. 1
d. 4
e. 1,2,3,4





Answer: D