1. In Ohm’s Law, what do
the symbols E, I, and R stand for?
2. What is the specific
heat of air and water?
3. What is grind
ability of coal?
4. A coal bunker contains
72,000 cubic feet of coal. Given 1 lb = .021 cubic feet. How many tons of coal
is in the bunker?
5. How much water is
evaporated from a 250 HP boiler generating steam at 150 lbs with a feed water
temperature of 120 degrees F, factor of evaporation is 1.139, and boiler is
operating at 50% above rating?
6. How many foot pounds
of work will 5 BTU’s do?
7. What is exfoliation?
What material is affected, where it would occur, what are its causes and side
effects and what preventive maintenance can be done for it?
8. How many gallons per
hour are pumped by a reciprocating pump that has a 6” diameter cylinder, 7.5”
stroke and operates at 30 strokes per minute?
9. List four accepted
field methods for measuring steam purity or quality.
10. A GE turbine main
stop has an internal bypass. What is it for and where is it located?
11. How many equivalent
reaction stages would be required to do the work of
one Curtis stage?
12. Give the calculations
for a Scotch boiler.
13. You have a long run
of pipe from the boiler to the prime mover. Where will
the pressure piping
stamp be located?
14. How is expansion of
the tubes in a condenser taken care of? (3 ways)
15. Draw and describe a
window patch. When and why is it used?
16. What is the weakest
area (in regards to construction) of a bent tube water-
17. What materials make
up babbit? Give the purpose and percentage of each.
18. How much is plant
capacity increased when a topping turbine is added?
19. What should the
diametrical clearance of a carbon ring be on a turbine shaft?
How do you calculate the weight of a fluid flowing through an opening?
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