Technician A says that the third prong on a North American 120V AC electric cord always indicates a three-phase voltage. Technician B says that the third prong on a 120V AC electric cord can be broken off if an extension cord is used. Who is correct?

A. A only
B. B only
C. Both A and B
D. Neither A nor B


Answer: D

Trades & Technology

You might also like to view...

In a Rankine cycle, superheated steam that enters the turbine at 1273.15 K and 1.8 MPa is then expanded to a vapor at 0.1 MPa. What is the shaft work generated per kilogram of steam if the efficiency of the turbine is 0.56?

A. -723 kJ/kg B. -1.3 MJ/kg C. -723 J/kg D. -2.3 MJ/kg E. Insufficient information to solve

Trades & Technology

When subtracting two numbers it is sometimes necessary to borrow  from the number in the adjacent column.

Answer the following statement true (T) or false (F)

Trades & Technology

Why are multiple smaller compressors sometimes preferred over one large compressor?

What will be an ideal response?

Trades & Technology

Which of the following is not a method for representing visualization variables?

A. color B. motion C. symbols D. thermal analysis

Trades & Technology