and CORRECT Answers
Which reference to scalars and B
vectors, a space diagram:
a. Illustrates the position of the
planets and the stars
b. illustrates a system of vectors
c. shows the relationship of the
scalars to the vector
d. illustrates a system of scalars
e. shows the relationship of time
to the vector
The flow of heat from molecule A
to molecule within a substance
or from molecule of one body
to those of another body in
direct contact with it is defined
as: a. Conduction
b. Convection
c. Specific heat
d. Latent heat of fusion
e. Absolute pressure
Water is the best extinguisher D
for:
A. An oil fire
B. A gas fire
C. An electrical fire
D. A wood fire
E. A metal burning fire
,The coefficient of friction is E
defined as:
A. the downward force on the
two services in contact
B. The force parallel to the
surface required to start an
object moving
C. The reaction normal
perpendicular to the surface
D. The force parallel to the
service required to keep an
object moving at a constant
linear velocity
E. The ratio of the force required
to move up body to the
To start a body moving which of B
the following must be
overcome?
A. Kinetic friction
B. Static friction
C. Fluid friction
D. Rolling friction
E. Normal force
Foam extinguishers are C
recommended for?
A. Class A and Class C fires
B. Class C and Class B fires
C. Class A and Class B fires
D. All classes of fires
E. All but burning liquids
A control loop controller D
A. period does not require a set
point value
B. Sends a signal to a primary
element
C. Will always eliminate
deviation
D. Constantly compares input
signals to the setpoint
E. Send signal to the transmitter
The ratio between the ultimate D
strength and the allowable
stress is defined as
A.Ultimate stress
B. Maximum allowable load
C. Working stress
D. Factor of safety
E. Elastic limit
, Which of the following A
constitutes a Class C fire?
A. Fire in an electrical panel
B. Fire in a fuel tank
C. Fire in a lumber pile
D. Fire in a coal bunker
E. Fire in a pile of paper
The greatest load that can be E
applied to a material under is
design conditions is called
A. Ultimate stress
B. Elastic limit
C. Allowable stress
D. Factor of safety
E. Maximum allowable load
External tensile forces acting D
parallel but not in line produces:
A. Tensile stress
B. Compressive stress
C. Working stress
D. Shear stress
E. Compressive strain
If an object is in motion along a B
fractional surface in a certain
direction what will be the
direction of frictional force
exerted on that object?
A. Same
B. Opposite
C. Perpendicular
D. Angular with
E. Angular against
Stepper motors have/are: E
A. Very high speed operation
B. Minimum torque when at
standstill
C. Low reliability
D. Slow starting
E. Low efficiency
_ ______ are pieces of slag or E
tungsten that are trapped in a
weld deposit
A. Porosity
B. Undercut
C. Incomplete fusion
D. Incomplete penetration
E. Inclusions
NDIR Detectors detect: A
A. CO/CO2
B. SO2
C. NOx
D. Relative humidity
E. CH4