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
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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
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)
Why are multiple smaller compressors sometimes preferred over one large compressor?
What will be an ideal response?
Which of the following is not a method for representing visualization variables?
A. color B. motion C. symbols D. thermal analysis