1
NCCER
NCCER INSTRUMENTATION EXAM QUESTIONS
WITH CORRECT VERIFIED SOLUTIONS 100%
GUARANTEED PASS (LATEST UPDATE
Regardless of the level of power being controlled by a relay, the activation
| | | | | | | | | | | |
of the relay is accomplished by a ---- power level signal - ANS ✓lower
| | | | | | | | | | | | | |
Relays that are a combination of electromechanical and solid state
| | | | | | | | |
technology are known as ------ - ANS ✓hybrid relays
| | | | | | | | |
Reed relays are used in applications requiring all of the following
| | | | | | | | | |
characteristics except? - ANS ✓high current
| | | | | |
Relays that are often referred to as throwaway relays are _____ relays - ANS
| | | | | | | | | | | | |
✓general purpose plug in
| | | |
The primary difference between a reed switch and a reed relay is _____ - ANS
| | | | | | | | | | | | | |
✓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 - ANS
| | | | | | | | | | |
✓two
|
Electrometrical control relays are used in all of the following functions
| | | | | | | | | |
except _____ - ANS ✓high speed power switching
| | | | | | | |
NCCER
, 2
NCCER
A disadvantage associated with solid state relays is______ - ANS ✓current
| | | | | | | | | |
leakage
|
In a solid state relay, an LED converts electrical energy into _______ - ANS
| | | | | | | | | | | | |
✓light energy
| |
The force balance principle is most commonly used in pneumatic ______ - ANS
| | | | | | | | | | | |
✓transmitters
|
Using pneumatic input signals as operands, computing relays perform ______
| | | | | | | | |
functions - ANS ✓mathematical
| | | |
Pneumatic selector and limiter relays work on the principle of satisfying a
| | | | | | | | | | |
pre-set ______ - ANS ✓pressure setting
| | | | | |
One disadvantage of an oil pot timing relay is that the timing may be eratic
| | | | | | | | | | | | | |
if _______ - ANS ✓the piston is not allowed to make a full return to the bottom of
| | | | | | | | | | | | | | | | | |
the dash pot
| | |
Clock mototrs on time switches are typically _______ - ANS ✓AC synchronous
| | | | | | | | | | |
motors
|
Switching functions in a solid state timer are provided by _______ - ANS ✓scrs
| | | | | | | | | | | | |
Another name for a sensor is a ----- - ANS ✓detector
| | | | | | | | | |
The device principle of an RTD is that resistance varies linearly with ------- -
| | | | | | | | | | | | |
ANS ✓temperature
| |
A device that converts one form of input signal to another form of output
| | | | | | | | | | | | |
signal is caled a ------ - ANS ✓transducer
| | | | | | | |
NCCER
, 3
NCCER
Sending a signal from one location to another, usually involving some
| | | | | | | | | |
distance, is the job of a ---- - ANS ✓transmitter
| | | | | | | | | |
The measurement of repeatability of an instrument is referred to as----- -
| | | | | | | | | | |
ANS ✓precision
| |
The first system element that responds quantitively to the measured
| | | | | | | | |
variable and preforms the initial measurement operation is a ------ - ANS
| | | | | | | | | | | |
✓detector
|
An orifice plate is normally mounted ----- - ANS ✓between two flanges
| | | | | | | | | | |
A ---- provides maximum accuracy when detecting flow in fluids that
| | | | | | | | | |
contain larger amounnts of suspended solids such as slurries - ANS ✓venturi
| | | | | | | | | | | |
tube
|
In a magnetic flowmeter, the process fluid ----- - ANS ✓acts as the moving
| | | | | | | | | | | | |
conductors
|
A bourdon tube must be fabricated from amaterial that has elastic
| | | | | | | | | |
properties so that it ----- - ANS ✓can deform under pressure
| | | | | | | | | | |
The deflection characteristics of a metal diaphragm pressure device can be
| | | | | | | | | |
somewhat improved by ---- - ANS ✓corrugating the surface
| | | | | | | | |
The us of metallic bellows has been most successful in the ----- pressure
| | | | | | | | | | | |
range - ANS ✓0.5 to 75 psig
| | | | | | |
NCCER
NCCER
NCCER INSTRUMENTATION EXAM QUESTIONS
WITH CORRECT VERIFIED SOLUTIONS 100%
GUARANTEED PASS (LATEST UPDATE
Regardless of the level of power being controlled by a relay, the activation
| | | | | | | | | | | |
of the relay is accomplished by a ---- power level signal - ANS ✓lower
| | | | | | | | | | | | | |
Relays that are a combination of electromechanical and solid state
| | | | | | | | |
technology are known as ------ - ANS ✓hybrid relays
| | | | | | | | |
Reed relays are used in applications requiring all of the following
| | | | | | | | | |
characteristics except? - ANS ✓high current
| | | | | |
Relays that are often referred to as throwaway relays are _____ relays - ANS
| | | | | | | | | | | | |
✓general purpose plug in
| | | |
The primary difference between a reed switch and a reed relay is _____ - ANS
| | | | | | | | | | | | | |
✓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 - ANS
| | | | | | | | | | |
✓two
|
Electrometrical control relays are used in all of the following functions
| | | | | | | | | |
except _____ - ANS ✓high speed power switching
| | | | | | | |
NCCER
, 2
NCCER
A disadvantage associated with solid state relays is______ - ANS ✓current
| | | | | | | | | |
leakage
|
In a solid state relay, an LED converts electrical energy into _______ - ANS
| | | | | | | | | | | | |
✓light energy
| |
The force balance principle is most commonly used in pneumatic ______ - ANS
| | | | | | | | | | | |
✓transmitters
|
Using pneumatic input signals as operands, computing relays perform ______
| | | | | | | | |
functions - ANS ✓mathematical
| | | |
Pneumatic selector and limiter relays work on the principle of satisfying a
| | | | | | | | | | |
pre-set ______ - ANS ✓pressure setting
| | | | | |
One disadvantage of an oil pot timing relay is that the timing may be eratic
| | | | | | | | | | | | | |
if _______ - ANS ✓the piston is not allowed to make a full return to the bottom of
| | | | | | | | | | | | | | | | | |
the dash pot
| | |
Clock mototrs on time switches are typically _______ - ANS ✓AC synchronous
| | | | | | | | | | |
motors
|
Switching functions in a solid state timer are provided by _______ - ANS ✓scrs
| | | | | | | | | | | | |
Another name for a sensor is a ----- - ANS ✓detector
| | | | | | | | | |
The device principle of an RTD is that resistance varies linearly with ------- -
| | | | | | | | | | | | |
ANS ✓temperature
| |
A device that converts one form of input signal to another form of output
| | | | | | | | | | | | |
signal is caled a ------ - ANS ✓transducer
| | | | | | | |
NCCER
, 3
NCCER
Sending a signal from one location to another, usually involving some
| | | | | | | | | |
distance, is the job of a ---- - ANS ✓transmitter
| | | | | | | | | |
The measurement of repeatability of an instrument is referred to as----- -
| | | | | | | | | | |
ANS ✓precision
| |
The first system element that responds quantitively to the measured
| | | | | | | | |
variable and preforms the initial measurement operation is a ------ - ANS
| | | | | | | | | | | |
✓detector
|
An orifice plate is normally mounted ----- - ANS ✓between two flanges
| | | | | | | | | | |
A ---- provides maximum accuracy when detecting flow in fluids that
| | | | | | | | | |
contain larger amounnts of suspended solids such as slurries - ANS ✓venturi
| | | | | | | | | | | |
tube
|
In a magnetic flowmeter, the process fluid ----- - ANS ✓acts as the moving
| | | | | | | | | | | | |
conductors
|
A bourdon tube must be fabricated from amaterial that has elastic
| | | | | | | | | |
properties so that it ----- - ANS ✓can deform under pressure
| | | | | | | | | | |
The deflection characteristics of a metal diaphragm pressure device can be
| | | | | | | | | |
somewhat improved by ---- - ANS ✓corrugating the surface
| | | | | | | | |
The us of metallic bellows has been most successful in the ----- pressure
| | | | | | | | | | | |
range - ANS ✓0.5 to 75 psig
| | | | | | |
NCCER
