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S3-Q72.) A delta generator that has been wired in “zig-zag” produces what level of voltage?

a.) 4160/2400 single phase.
Incorrect response, see answer d.
b.) 208/120 three phase.
Incorrect response, see answer d.
c.) 480/277 three phase.
Incorrect response, see answer d.
d.) *240/120 single phase.
Correct

S3-Q73.) A twelve-lead generator may be rewired to all of the following configurations EXCEPT:

a.) High WYE
Incorrect response, see answer d.
b.) Low WYE
Incorrect response, see answer d.
c.) Zigzag
Incorrect response, see answer d.
d.) *WYE Delta
Correct

S3-Q74.) What voltage is obtained when a twelve-wire generator is wired with 1 & 7 connected, 8 & 2
connected, 3 & 9 connected, 5,6,4,10, 11 and 12 connected.

a.) *208/120
Correct
b.) 480/277
Incorrect response, see answer a.
c.) 240/150
Incorrect response, see answer a.
d.) 120/80
Incorrect response, see answer a.

S3-Q75.) Which terminals are used as the neutral when a twelve wire generator is wired with 4 & 7
connected, 8 & 5 connected, 6 & 9 connected, 10, 11 and 12 connected.

a.) 4 & 7
Incorrect response, see answer d.
b.) 8 & 5
Incorrect response, see answer d.
c.) 6 & 9
Incorrect response, see answer d.
d.) *10, 11 and 12
Correct.

Page 77 - EGSA Apprentice Certification Program Study Guide