Test Questions Part 5 Flashcards
Two main categories of manufactured steel piping are
Seamless and welded
Welded or screwed
Piping and tubing
Pressure and water
Seamless and welded
Transformers should be inspected at least:
Quarterly
Bi-annually
Semi-annually
Once or twice a year
Quarterly
Before welding on a pressure vessel, a qualified pressure welder must:
be registered with the Canadian Standards Association
be employed by the company which owns the pressure vessel
supervised by a safety codes officer
pass a welding performance test
pass a welding performance test
The yoke that supports the main components of the DC machine is frequently made of:
Copper or brass
Composite materials
Steel or iron
Aluminum
Steel or iron
Vectors that meet at the same point are called
Equal
Co-directional
Coplaner
Concurrent
Concurrent
A mechanical steam trap:
Can be fitted in any position
May have a thermostatic air release
Has alcohol inside the float
Requires a difference in steam temperatures to operate
May have a thermostatic air release
The force of friction is:
Dependent on the area of the two surfaces in contact.
Not affected by the roughness of the two surfaces in contact.
Applied in the vertical direction.
Not affected by the area of the two surfaces in contact.
Not affected by the area of the two surfaces in contact.
In a Plant Line Trace sketch:
All valves are shown
All process flows are shown
pipe sizes are shown
only major features are shown
only major features are shown
One advantage of the low-pressure flexible watertube boiler is that:
No maintenance is required
Feedwater treatment is unnecessary
Expansion and contraction stresses are eliminated
Tubes never need replacement
Expansion and contraction stresses are eliminated
The valve design with the greatest capability to handle slurries and fluids with high suspended solids is the __________ valve.
Globe
Gate
Ball
Needle
Ball
Overheating of electrical equipment is:
Is one of the conditions that usually cause electrical fires in buildings
Usually the result of inadequate wiring
Often due to over sized fuses being installed
The result of blocked cooling fin passages
Is one of the conditions that usually cause electrical fires in buildings
In order for hydrocarbons to burn, the:
Mixture must be lean
Air/fuel mixture should be above the upper flammable limit
Fuel/air mixture must be rich
Fuel must be a vapour
Fuel must be a vapour
When controller output is proportional to the amount of deviation, the controller is:
Integral
Two-position
Proportion plus reset plus rate
Proportional
Proportional
Fluidized bed plants can be built smaller than other designs because of:
Higher steam temperatures and pressures
Higher heat transfer rates and the absence of wet exhaust scrubbing equipment
Less slag production and the elimination of soot blowing equipment
The use of smaller burners
Higher heat transfer rates and the absence of wet exhaust scrubbing equipment
The two basic categories of welded joints are groove and:
angle
butt
fillet
overlapping
fillet
The flow of electrons in a uniform direction is called:
Voltage drop
Electric current flow
Potential difference
Electromotive flow
Electric current flow
A Bourdon tube may be manufactured in the shape of a helix so that _______________________ than a standard bourdon tube:
Its final output has less travel
They can fit in narrower enclosures
Higher pressures can be sensed
It has enough power and rotation to move the pens of a recorder without the use of gears
It has enough power and rotation to move the pens of a recorder without the use of gears
Before a site reclamation can begin, what must be done?
Federal funding must be applied for
representatives from Environment Canada must be on-site
sufficient funding must be in place
a site evaluation must be conducted
a site evaluation must be conducted
Which of the following statements about belt drive systems is FALSE?
Linear speed on a point of each pulley will be the same as the linear speed of the belt.
Tension in the bottom belt is always double that in the top belt.
Belt driver pulleys move follower pulleys by means of frictional force between the belt and the pulleys.
Rotational speed will be equal if the pulley diameters are equal.
Linear speed on a point of each pulley will be the same as the linear speed of the belt.
A recorder utilizing a spiral Bourdon tube will have a pen movement:
On a logarithmic scale
Proportional to the change in tube pressure
Range of 0 to 24 hours
Range of 0 to 7 days
Proportional to the change in tube pressure
Why is the pressure that acetylene used at so important?
because it is unstable at pressures above 103 kPa
because at high pressures it separates into acetone and trilene
because at low pressures (below 100 kPa) it becomes fluid
because it rapidly loses heat at elevated pressures
because it is unstable at pressures above 103 kPa
A control valve that has one plug that moves upward to close the port is called:
Reverse acting
Double seated direct acting.
Reverse acting diaphragm actuated.
Direct acting
Reverse acting
