A transformer is a device that can change values of AC voltage and current without a change of ____.

a. temperature
b. wavelength
c. efficiency
d. frequency


d. frequency

Trades & Technology

You might also like to view...

Explain why testing and inspection of materials may be required and how it is accomplished.

What will be an ideal response?

Trades & Technology

An adapter cable containing one male plug and two female cord connectors used to join two loads to one branch circuit is referred to as a ____.

A. branch-off B. bonder C. two-fer D. split branch

Trades & Technology

What should be done as part of a new vehicle pre-delivery inspection?

A) Removing all protective plastic B) Adjust the air pressure in all tires C) Install parts that are shipped inside the vehicle for installation at the selling dealer D) All of the above

Trades & Technology

A cylinder power balance test is performed on a 4 cylinder engine. Cylinders 1, 2, and 3, all drop 175 RPM when disabled with a scan tool. Cylinder 4 drops 50 RPM when disabled. The following statements are all correct EXCEPT ________

A) Cylinder 4 is much stronger than 1, 2, and 3 B) Cylinder 4 is much weaker than 1, 2, and 3 C) There may be a mechanical problem with cylinder 4 D) This test could also be conducted by grounding the plug wire for each cylinder

Trades & Technology