Electrical Measuring Instruments TPC 204
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Digital meters are named such because... - CORRECT ANSWER - their internal circuits
carry aignals consisting of 1s and 0s
An ADC (analog-to-digital converter) is an essential part of... - CORRECT ANSWER - all
digital meters
Dual-slope integrators are found in certain kinds of... - CORRECT ANSWER - ADCs
(analog-to-digital converters)
In order to generate a display, a digital meter needs a ______ processor, and ADC (analog-to-
digital converter), and a readout control. - CORRECT ANSWER - signal
All integrating ADCs (analog-to-digital converters) count the time it takes to charge or discharge
a capacitor to a reference ______. - CORRECT ANSWER - voltage
LCDs (liquid crystal displays) make better meter displays than LEDs because of their... -
CORRECT ANSWER - low energy requirement
What is usually expressed as plus or minus some percentage and expresses a meter's maximum
and minimum expected error? - CORRECT ANSWER - accuracy
D'Arsonval movements are used in ______ meters. - CORRECT ANSWER - analog
Ohm per Volt is the measurement unit used to express a meter's... - CORRECT
ANSWER - sensitivity
, A parallel leg or branch added around an analog meter movement is known as a... - CORRECT
ANSWER - shunt
The purpose of a make-then-break switch is to... - CORRECT ANSWER - Protect the
meter movement from overcurrent
You will destroy an analog ammeter if you connect it in... - CORRECT ANSWER -
parallel instead of series
To connect an ammeter to a circuit, you need to... - CORRECT ANSWER - open the
circuit
PMMC galvanometer meter movement for dc can be converted to measure ac with the addition
of a... - CORRECT ANSWER - rectifier
The best way to take an ammeter reading on a live circuit is with a clamp-on ammeter because
you do not have to ______ the circuit with this type of meter. - CORRECT ANSWER -
break into
An accurate wattmeter will always show the true power consumed, which takes into account the
power losses due to... - CORRECT ANSWER - the power factor
An internal variable resistor is needed in an ohmmeter to... - CORRECT ANSWER -
compensate for aging batteries
The jaws of a clamp-on ammeter serve as a... - CORRECT ANSWER - transformer
secondary
Use clips on the ends of voltmeter leads whenever... - CORRECT ANSWER - voltage
levels are high
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Digital meters are named such because... - CORRECT ANSWER - their internal circuits
carry aignals consisting of 1s and 0s
An ADC (analog-to-digital converter) is an essential part of... - CORRECT ANSWER - all
digital meters
Dual-slope integrators are found in certain kinds of... - CORRECT ANSWER - ADCs
(analog-to-digital converters)
In order to generate a display, a digital meter needs a ______ processor, and ADC (analog-to-
digital converter), and a readout control. - CORRECT ANSWER - signal
All integrating ADCs (analog-to-digital converters) count the time it takes to charge or discharge
a capacitor to a reference ______. - CORRECT ANSWER - voltage
LCDs (liquid crystal displays) make better meter displays than LEDs because of their... -
CORRECT ANSWER - low energy requirement
What is usually expressed as plus or minus some percentage and expresses a meter's maximum
and minimum expected error? - CORRECT ANSWER - accuracy
D'Arsonval movements are used in ______ meters. - CORRECT ANSWER - analog
Ohm per Volt is the measurement unit used to express a meter's... - CORRECT
ANSWER - sensitivity
, A parallel leg or branch added around an analog meter movement is known as a... - CORRECT
ANSWER - shunt
The purpose of a make-then-break switch is to... - CORRECT ANSWER - Protect the
meter movement from overcurrent
You will destroy an analog ammeter if you connect it in... - CORRECT ANSWER -
parallel instead of series
To connect an ammeter to a circuit, you need to... - CORRECT ANSWER - open the
circuit
PMMC galvanometer meter movement for dc can be converted to measure ac with the addition
of a... - CORRECT ANSWER - rectifier
The best way to take an ammeter reading on a live circuit is with a clamp-on ammeter because
you do not have to ______ the circuit with this type of meter. - CORRECT ANSWER -
break into
An accurate wattmeter will always show the true power consumed, which takes into account the
power losses due to... - CORRECT ANSWER - the power factor
An internal variable resistor is needed in an ohmmeter to... - CORRECT ANSWER -
compensate for aging batteries
The jaws of a clamp-on ammeter serve as a... - CORRECT ANSWER - transformer
secondary
Use clips on the ends of voltmeter leads whenever... - CORRECT ANSWER - voltage
levels are high
