When plugging off a tube in a boiler, the plug taper should be
a) 2 to 1
b) 5 to 1
c) 7.5 to 1
d) 10 to 1
e) 20 to 1
Answer: E
When plugging off a tube in a boiler, the plug taper should be
a) 2 to 1
b) 5 to 1
c) 7.5 to 1
d) 10 to 1
e) 20 to 1
Answer: E