NCCER INSTRUMENTATION Exam Questions
With Correct Verified Solutions 100%
Guaranteed Pass Latest Update 2025
Regardless of the level of power being controlled by a relay, the activation
of the relay is accomplished by a ---- power level signal - ANSWER ✓lower
Relays that are a combination of electromechanical and solid state
technology are known as ------ - ANSWER ✓hybrid relays
Reed relays are used in applications requiring all of the following
characteristics except? - ANSWER ✓high current
Relays that are often referred to as throwaway relays are _____ relays -
ANSWER ✓general purpose plug in
The primary difference between a reed switch and a reed relay is _____ -
ANSWER ✓reed relays contain their own coil and reed switches depend on an
external magnetic field to operate
Latching types of general purpose relays typically have ______ coils -
ANSWER ✓two
Electrometrical control relays are used in all of the following functions
except _____ - ANSWER ✓high speed power switching
,A disadvantage associated with solid state relays is______ - ANSWER ✓current
leakage
In a solid state relay, an LED converts electrical energy into _______ -
ANSWER ✓light energy
The force balance principle is most commonly used in pneumatic ______ -
ANSWER ✓trAnswermitters
Using pneumatic input signals as operands, computing relays perform ______
functions - ANSWER ✓mathematical
Pneumatic selector and limiter relays work on the principle of satisfying a
pre-set ______ - ANSWER ✓pressure setting
One disadvantage of an oil pot timing relay is that the timing may be eratic
if _______ - ANSWER ✓the piston is not allowed to make a full return to the
bottom of the dash pot
Clock mototrs on time switches are typically _______ - ANSWER ✓AC
synchronous motors
Switching functions in a solid state timer are provided by _______ - ANSWER
✓scrs
Another name for a sensor is a ----- - ANSWER ✓detector
, The device principle of an RTD is that resistance varies linearly with ------- -
ANSWER ✓temperature
A device that converts one form of input signal to another form of output
signal is caled a ------ - ANSWER ✓trAnswerducer
Sending a signal from one location to another, usually involving some
distance, is the job of a ---- - ANSWER ✓trAnswermitter
The measurement of repeatability of an instrument is referred to as----- -
ANSWER ✓precision
The first system element that responds quantitively to the measured
variable and preforms the initial measurement operation is a ------ -
ANSWER ✓detector
An orifice plate is normally mounted ----- - ANSWER ✓between two flanges
A ---- provides maximum accuracy when detecting flow in fluids that
contain larger amounnts of suspended solids such as slurries - ANSWER
✓venturi tube
In a magnetic flowmeter, the process fluid ----- - ANSWER ✓acts as the
moving conductors
A bourdon tube must be fabricated from amaterial that has elastic
properties so that it ----- - ANSWER ✓can deform under pressure
With Correct Verified Solutions 100%
Guaranteed Pass Latest Update 2025
Regardless of the level of power being controlled by a relay, the activation
of the relay is accomplished by a ---- power level signal - ANSWER ✓lower
Relays that are a combination of electromechanical and solid state
technology are known as ------ - ANSWER ✓hybrid relays
Reed relays are used in applications requiring all of the following
characteristics except? - ANSWER ✓high current
Relays that are often referred to as throwaway relays are _____ relays -
ANSWER ✓general purpose plug in
The primary difference between a reed switch and a reed relay is _____ -
ANSWER ✓reed relays contain their own coil and reed switches depend on an
external magnetic field to operate
Latching types of general purpose relays typically have ______ coils -
ANSWER ✓two
Electrometrical control relays are used in all of the following functions
except _____ - ANSWER ✓high speed power switching
,A disadvantage associated with solid state relays is______ - ANSWER ✓current
leakage
In a solid state relay, an LED converts electrical energy into _______ -
ANSWER ✓light energy
The force balance principle is most commonly used in pneumatic ______ -
ANSWER ✓trAnswermitters
Using pneumatic input signals as operands, computing relays perform ______
functions - ANSWER ✓mathematical
Pneumatic selector and limiter relays work on the principle of satisfying a
pre-set ______ - ANSWER ✓pressure setting
One disadvantage of an oil pot timing relay is that the timing may be eratic
if _______ - ANSWER ✓the piston is not allowed to make a full return to the
bottom of the dash pot
Clock mototrs on time switches are typically _______ - ANSWER ✓AC
synchronous motors
Switching functions in a solid state timer are provided by _______ - ANSWER
✓scrs
Another name for a sensor is a ----- - ANSWER ✓detector
, The device principle of an RTD is that resistance varies linearly with ------- -
ANSWER ✓temperature
A device that converts one form of input signal to another form of output
signal is caled a ------ - ANSWER ✓trAnswerducer
Sending a signal from one location to another, usually involving some
distance, is the job of a ---- - ANSWER ✓trAnswermitter
The measurement of repeatability of an instrument is referred to as----- -
ANSWER ✓precision
The first system element that responds quantitively to the measured
variable and preforms the initial measurement operation is a ------ -
ANSWER ✓detector
An orifice plate is normally mounted ----- - ANSWER ✓between two flanges
A ---- provides maximum accuracy when detecting flow in fluids that
contain larger amounnts of suspended solids such as slurries - ANSWER
✓venturi tube
In a magnetic flowmeter, the process fluid ----- - ANSWER ✓acts as the
moving conductors
A bourdon tube must be fabricated from amaterial that has elastic
properties so that it ----- - ANSWER ✓can deform under pressure
