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1
What is the function of the thrust bearing on a steam turbine?
to maintain the radio position of the rotor
2
What will excessive oxygen in the boiler water cause to take place?
pitting of boiler metal
3
When comparing a globe valve and a gate valve in the same application, the gate valve has a ______________ pressure drop when fully opened and is the ______________ choice for throttling.
lower; poorer
4
You are installing a boiler according to the boiler rules and regulations. Where must the filter and strainer for oil fire boilers be installed?
upstream from the safety shut off valve
5
What would be the over-speed trip setting on a turbine with a normal operating speed of 1770 RPM?
1947 RPM
6
By N.J.A.C. 12:90 rules, What is the minimum thickness allowed for atmospheric type blowdown tank?
5/16 inch
7
Boilers are equipped with a combination natural gas / fuel oil burner for:
more flexible operation
8
Shrouds are found on what pieces of auxiliary equipment?
steam turbines
9
A boiler with an MAWP of 150 psi and the safety valve setting of 100 psi with a 3" valve disc - What would be the total force needed to open the safety valve against opposing spring force?
707 lbs
10
The steam pressure on a safety valve act upon upper side of the valve disc, which is held down upon the seat by a spring that pushes down.
false
11
The maximum size of the bottom blowdown line and the surface blow down line is:
2.5"
12
What is the theoretical cycle of a simple power plant?
Rankine cycle
13
Which of the following auxiliaries would most improve boiler efficiency?
an economizer
14
How often should the safety valves on a power boiler be test blown?
at least once a month
15
Which of the following could cause a tube in a high temperature hot water boiler to overheat?
poor circulation
16
You must operate boilers that burn various fuels. From the image attached what type of fuel system is indicated.
The image shown of fuel-oil burner arrangement
17
Water hammer (or other fluid hammer) is a dangerous condition that could result in:
lead to total failure of the piping hangers and support structures
18
What is the pressure at radiator 1
10.28 psig
19
The term viscosity can best be defined as:
The point at which oil starts to flow
20
What is the purpose of combustion in a boiler?
transfer heat energy from the main flame to the boiler water to create steam or hot water.
21
What is the function of a dry pipe in a boiler?
to remove moisture from the steam drum
22
Natural draft is produced by a mechanical fan.
false
23
When a license is improperly or not posted what is the amount of penalty or fine that may be imposed on the engineer, by the state?
$500.00
24
The maintenance of automatic direct fire boilers is covered under what document?
ASME CSD-1
25
Which of the following devices would be found on the inlet line of a steam turbine?
in atmospheric relief valves
26
In what units of measurement are vaporstat type pressure switches calibrated in?
inches of water
27
What is the max penalty that may be imposed for performing the duties of a license operator with an expired license?
$5,000
28
A two-element feed water regulator is controlled by what means?
water level and steam flow rate
29
Which of the following best defines the term "balanced draft"?
The forced draft and induced draft fans are regulated to keep the furnace below atmospheric pressure
30
Which of the following best defines saturated steam?
steam at a temperature corresponding with its pressure
31
On a turbine driven feed water pump, identify which two pipes are larger?
turbine steam exhaust and pump suction lines
32
Which of the following would cause scale to form on a low pressure boiler?
calcium and magnesium
33
Most steam boilers are equipped for the gauge glass and water column to be blown down. Generally, the operating rules recommend that the water column engaged glass be blown down..
once a day
34
In modern stationary engineering, a flue gas analysis is done to:
determine combustion efficiency
35
The examining board of the mechanical inspection Bureau of Boiler and pressure vessel compliance may consider an applicant experience of an equivalent amount for grade or classification from some other jurisdiction authority ( state or federal ).
True
36
Which of the following is the proper method for testing a low-water cutoff device on a steam boiler?
lower the water level in the boiler until the burner shuts down
37
Is it necessary to provide a disconnect switch at an accessible location at the boiler?
an electrical disconnect switch shall be installed at the boiler at an accessible location with a cover plate that can be locked out in the open position.
38
Why are stay bolts used in the construction of HRT power boilers?
to strengthen and support flat plates on a fire tube boiler
39
While making a round of your boiler room, the boiler feed water pump is making a strange noise. The pump casing and the temperature of the water has risen above normal. What would most likely cause this problem?
pump cavitation issue
40
Which statement best describes the operation of a closed feed water heater?
the steam and water do not mix
41
The various license classifications in grades for operating high pressure boilers are found every day NJAC reference section listed as:
Table 3.4
42
What prevents superheater tubes from warping or burning out?
by keeping a continuous flow of steam through the superheater tubes
43
By ASME code, the size of the water column connections to a boiler must be a minimum of
1 inch
44
Which of the following stacked gas readings would indicate fair to good combustion taking place?
low oxygen and carbon monoxide, high carbon dioxide
45
What is the proper procedure for returning a gauge glass to service after installing a new glass?
Open the drain and crack open the top valve
46
If one atmosphere is about 14.7 PSIA, what is the standard barometer reading at sea level equal to?
760mm. Hg
47
In the image attached select the statement that identifies what is happening on the display
The display shows the main ignition trial timer will begin in 5 seconds
48
A boiler produces 500 psi steam at 625° F, normal saturated steam condition is 467° F, what is the degree of superheat?
158° F