TEST BANK REVIEW FINAL EXAM 2026-2027
\LATEST UPDATE WITH COMPLETE QUESTIONS
AND CORRECT DETAILED ANSWERS\VERIFIED
100% ALREADY GRADED A+
If the tubes in a boiler are flared during installation, which of the
following is true?
-The ID is increased
-The OD is decreased
-The length is decreased
-the wall thickness is increased
ANSWERS: The ID is increased
What problem is caused by dirty condenser tubes?
ANSWERS: inability to maintain a normal vacuum on condenser
A lubrication with low viscosity is usually:
ANSWERS: adapted to high RPM use
,On a bicolor gauge glass water will appear ____ and steam will appear
_____
ANSWERS: green, red
Name 2 common classes of steam turbine blading:
ANSWERS: impulsive and reactive
Which of the following is NOT an advantage of operating a steam
turbine condensing?
-the condensate from the steam in recovered
-the HP developed by the turbine is increased
-The speed of the turbine is decreased
-Recovery of hot condensate increases boiler efficiency
ANSWERS: The speed of the turbine is decreased
A boiler is industrial when:
ANSWERS: The steam is used for a manufacturing process
What is the function of the dashpot?
ANSWERS: prevent over-travel due to the weight of the governor
linkage
,Which of the following is part of the weekly preventitive
maintenance program for a steam turbine?
-Test the overspeed trip
-inspect turbine exterior
-change oil
-Lubricate the throttle valve
ANSWERS: Inspect exterior
What oil pressure should be maintained when using a turbine oil
pump with a relief valve
ANSWERS: 50-55 PSI
What is the first step when starting a steam turbine?
ANSWERS: Open the condensate drains
An impulse turbine utilizes one row of stationary nozzles which
increase the velocity of the steam enough to drive 2 rows of
rotating blades. This type of turbine is called a:
ANSWERS: Velocity-compound turbine
, What should be part of the monthly preventive maintenance program
for a steam turbine?
ANSWERS: Check oil reservoir for sludge or water
What is the purpose of the aux. oil pump in a steam turbine
installation?
ANSWERS: Provide oil to the bearings on start-up
During the start-up of a large steam turbine, the speed is gradually
increased so that the operating speed may be reached. The turbine
operates smoothly, but at a particular RPM range, a significant
vibration is encountered. What should the operator do?
ANSWERS: Increase the speed to get through the RPM range as
quickly as possible
A steam turbine operates at 4500 RM. At what speed should the trip be
set?
ANSWERS: 4950 (10% over normal operation speed)
All of the following are causes of vibration in a turbine EXCEPT:
-priming from boiler
-misalignment of the turbine shaft
-condenser cooling water too warm
-passing through critical speed
ANSWERS: condenser cooling water too warm