ELECTRICAL TEST ANSWERS
December 4, 2002
1. Motor efficiency can be determined by which of the following formulas?
A. hp X 746
B. hp X 746/VA Input
þ C. hp x 746/Watts Input
D. hp X 746/kVA Input
Horsepower X 746/Watts Input
Motor efficiency is equal to motor output watts
(Horsepower X 746 watts) divided by motor input watts
2. Stainless steel grounds shall be listed and shall not be less than __________ in diameter.
þ A. ½ inch
National Electrical Code, Section 250-52(c)(2)
B. 3/4 inch
C. 1 inch
D. 1 1/4 inches
3. Equipment shall be durably marked where plainly visible t o indicate each circuit that is
___________.
A. on a po wer-limited fire alarm circuit
þ B. a power-limited fire alarm circuit National Electrical Code, Section 760-42
C. a fire alarm circuit
D. none of these
4. Flat cable assemblies shall consist of _______________ conductors.
A. 2
B. 3
C. 4
þ D. any of these
National Electrical Code, Section 363-6
5. Where provision must be made for limited flexibility, such as at motor terminals, in a Class 1,
Division 2 location, flexible conduit with approved fittings may be used.
þ A. True
B. False
National Electrical Code, Section 501-4(b)