Exam (elaborations)
3rd class stationary steam engineer license prep
3rd class stationary steam engineer license prep
[Show more]
Seller
Follow
Content preview
3rd class stationary steam engineerlicense prep
- ANS-
______ draft is produced by a fan located between the boiler and the chimney -
ANS-induced
_______ gauge glasses are used on boilers with precious exceeding 250 psi - ANS-flat
_______ is caused by allowing sudden extreme changes of temperature in a furnace -
ANS-spalling
________ boilers can operate at higher pressures than fire tube boilers - ANS-water
tube
_________ are necessary for complete combustion - ANS-time, temperature, mixture,
and atomization
_________ is always necessary in the combustion process - ANS-oxygen
_________ is required for combustion - ANS-atomization of fuel, oxygen, and Heat
__________ combustion is when all fuel is burned using only the theoretical amount of
air - ANS-perfect
__________ steam turbines allow condensate to be reclaimed for use in the system -
ANS-condensing
_________is carrying over particles of water with the steam - ANS-priming
a ________ allows condensate to pass through, but stops Steam. - ANS-a steam trap
a ________ pump is a positive displacement pump - ANS-reciprocating
a (n) ________ valve offers the least resistance to flow - ANS-gate
,a boiler burning fuel oil and using forced-draft requires. ________ cu ft a furnace
volume per boiler horsepower - ANS-.75
a boiler connected in battery requires a free blowing drain between the two stop valves
when the ______ - ANS-boiler has a manhole opening
a boiler equipped with a draft gauge and registering a negative pressure indicates.
_________ - ANS-atmospheric pressure is greater than furnace pressure
a boiler evaporates 48,000 lb of steam/hr. it evaporates 12 lb of steam/sq ft of heating
surface per hour. The boiler has _______ as ft of heating surface - ANS-4000
a boiler generating 6000 lb of steam/hr produces _______btu/hr - ANS-6,000,000
a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at
398 PSI. The blowdown is______psi - ANS-12
a boiler is producing 40,000lb of steam/hr at a pressure of 100 PSI and a steam
temperature of 500 degrees Fahrenheit. The steam produced is _______ steam -
ANS-superheated
a boiler is rated at 30,000 lb/hr and has a 5% blow down loss. The minimum size feed
water pump to supply this boiler is ________ gal./hr. - ANS-3795
a boiler with 3450 sq ft of heating surface design for 5 sq ft of heating surface / BHP has
________ hp - ANS-690
a boiler with a draft gauge showing a positive pressure indicates_____ - ANS-furnace
pressure is above atmospheric pressure
a bottom blowdown is performed on a boiler to _____ - ANS-discharge sludge and
sediment
a broken baffle on a water tube boiler would cause ________ - ANS-increase in
chimney temperature
a bypass damper on an air heater _______ - ANS-prevent moisture from collecting at
low firing rates
, a chimney temperature of 250 degrees Fahrenheit above steam temperature
indicates_______ - ANS-poor efficiency
a closed feedwater heater is always installed_______ - ANS-on the discharge side of
the feed water pump
a closed feedwater heater is always installed. ________ - ANS-on the discharge side of
the feed water pump
a combustion control on a boiler. _______ - ANS-controls the air-fuel ratio
a compound gauge registers ________% - ANS-either vacuum or pressure
a condensate pump is located 75 ' below the feed water heater and its discharged
gauge reads 75 PSI. The pressure at the inlet to the heater is. _______ psi -
ANS-42.525
a continuous blowdown line is located___ - ANS-in the Steam and water drum well
below the nowl
a deposit of scale or mud in an HRT boiler could cause_____ - ANS-a bag to develop
a dry pipe separator _____ - ANS-delivers higher-quality steam to the header
a dry pipe separator in a boiler _______ - ANS-maintains a high-quality Steam
a duplex double-acting reciprocating feed water pump has____ - ANS-to steam Pistons
2 to 2 2/2 times larger in area than the water piston
a duplex reciprocating feed water pump operates on the principle that the _______ -
ANS-steam piston area must be 2 to 2 1/2 times larger than the water piston
a feed water pump will become steam bound if the ________ - ANS-water temperature
in the open feedwater heater is too high
a flame rod_______ - ANS-ensures that the gas pilot is lighted
a flame scanner proves (verifies) __________ - ANS-pilot in Maine Flame
a gas pressure regulator is used to control the ______ - ANS-gas pressure at the burner
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller modockochieng06. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.29. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78112 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now