WorksheetsElectricity & Electronics - Ch. 4 Section Reviews
Total questions: 22
Worksheet time: 11mins
Some meters use the abbreviation COM to mark the positive polarity.
True
False
An iron vane meter measures current and voltage.
True
False
An iron vane meter is best suited for low-power circuit measurements.
True
False
An ammeter is used to measure _________.
voltage
current
resistance
electrical potential
In order to measure larger currents, a _____, or alternate path is provided for current.
resistor
scale
shunt
grounding
An ammeter should always be connected _________.
in parallel with the power supply or circuit device
in series with the power supply or circuit device
either in series or parallel with the load
directly across the load
A voltmeter is used to measure _________.
voltage
current
resistance
wattage
To measure higher voltages, _________ are placed in series with the meter movement coil.
grounders
meter scale
shunts
multiplier resistors
A voltmeter should be connected in series with a device.
True
False
The black lead of a meter is connected to the positive polarity of the device.
True
False
A quality meter has sensitivity of at least _________ ohms/volt.
200
2,000
20,000
200,000
An ohmmeter is used to measure _________.
voltage
current
resistance
wattage
An ohmmeter uses a ________ scale.
linear
nonlinear
nominal
radial
An ohmmeter must be calibrated before use.
True
False
A VOM is a(n) ________.
voltmeter
ammeter
ohmmeter
All of the above
In the electronics field, DMM stands for ____________.
direct messaging mode
digital multimeter
digital molecular matter
dual multimeter
What does resolution mean when referring to a DMM?
Measurement, in pixels, of the quality of an image.
The action of solving a problem.
Degree to change before the DMM will display a change in value.
A formula used to equate AC voltage to DC voltage.
Which of the three meters should not be used while the circuit is energized?
voltmeter
ammeter
ohmmeter
All of the above
A meter has its greatest accuracy at about ⅔ deflection on the meter scale.
True
False
Electrical diagrams are used for ________.
installation
fabrication
troubleshooting
All of the above
What is the main purpose of a schematic drawing?
Show how components relate to each other
Show wire sizes and switch amperages.
Show the distance between components.
All of the above
Circuit design software is only used to draw out electronic circuitry.
True
False
