Font size
WorksheetsNCCER Ch. 12 Review
Total questions: 25
Worksheet time: 15mins
Which of the following is true regarding analog meters?
Analog meters are solid-state instruments.
Analog meters provide a digital readout.
Analog meters rely on a moving-coil meter movement.
Analog meters provide an autoranging setting.
A voltmeter is used to test
exact voltages
voltage ranges
power
sine waves
In order to ensure safety, before measuring low voltages, you should first test for resistance
resistance
current
vibration
An ammeter is used to measure
current
voltage
resistance
insulation value
Clamp-on ammeters operate by
using d'Arsonval meter movement
sensing the strength of the electromagnetic field around the wire
measuring the high resistance end of a power transformer
using a resistive shunt
A meter with applied voltages of 500V or 1,000V is a(n)
megohmmeter
ammeter
multimeter
continuity tester
A motor rotation tester
tests an energized motor
gets connected to the motor supply conductors
is used to identify the motor legs
The highest level of protection is provided by instruments rated as
CAT I
CAT II
CAT III
CAT IV
The International Electrotechnical Commission (IEC) developed a safety standard for overvoltage installation categories of CAT I, CAT II, CAT III, and CAT IV for
wiring
electrical equipment
test equipment
signaling circuits
What is the lowest acceptable overvoltage category rating for a multimeter that will be used to test small appliances?
CAT I
CAT II
CAT III
CAT IV
The measurement of the electromotive force of a circuit is accomplished using a(n)
(a)
Used for electromagnetic effects or for providing electrical resistance, a BLANK is a number of turns of wire.
(a)
A BLANK uses a permanent magnet and moving coil arrangement to move a pointer across a scale.
(a)
Usually expressed in hertz, BLANK is the number of cycles completed each second by a given AC voltage.
(a)
BLANK is an uninterrupted electrical path for current flow.
(a)
Power from a solar PV system can cause a dangerous BLANK in equipment assumed to be de-energized.
(a)
When using a voltmeter that is not auto ranging, start with the highest setting and work down until the meter reads somewhere between BLANK
(a)
A(n) BLANK is used to extend the range of a meter movement for current measurements.
(a)
Always connect an ohmmeter in parallel with a load.
True
False
The voltage range of a meter movement can be extended by adding a(n) BLANK in series.
(a)
Short circuits can be detected by using a(n)
(a)
What type of test equipment would you use to check the resistance between motor windings?
(a)
The phase sequence of a circuit is identified using a(n) .
(a)
True or False? A voltage tester is used for precise voltage measurements.
True
False
A(n) BLANK is used to take electrical readings at specified intervals.
(a)
