There are two general designs of electric boilers. They are the
a) firetube type and water tube type
b) AC and DC type
c) electrode and immersion type
d) grounded and ungrounded type
e) reverse polarity and negative ground
Answer: C
There are two general designs of electric boilers. They are the
a) firetube type and water tube type
b) AC and DC type
c) electrode and immersion type
d) grounded and ungrounded type
e) reverse polarity and negative ground