Technician Subelement T5 Flashcards
Electrical current is measured in which of the following units?
A. Volts
B. Watts
C. Ohms
D. Amperes
Amperes
Electrical power is measured in which of the following units?
A. Volts
B. Watts
C. Ohms
D. Amperes
Watts
What is the name for the flow of electrons in an electric circuit?
A. Voltage
B. Resistance
C. Capacitance
D. Current
Current
What is the name for a current that flows only in one direction?
A. Alternating current
B. Direct current
C. Normal current
D. Smooth current
Direct current
What is the electrical term for the electromotive force (EMF) that causes electron flow?
A. Voltage
B. Ampere-hours
C. Capacitance
D. Inductance
Voltage
How much voltage does a mobile transceiver typically require?
A. About 12 volts
B. About 30 volts
C. About 120 volts
D. About 240 volts
About 12 volts
Which of the following is a good electrical conductor?
A. Glass
B. Wood
C. Copper
D. Rubber
Copper
Which of the following is a good electrical insulator?
A. Copper
B. Glass
C. Aluminum
D. Mercury
Glass
What is the name for a current that reverses direction on a regular basis?
A. Alternating current
B. Direct current
C. Circular current
D. Vertical current
Alternating current
Which term describes the rate at which electrical energy is used?
A. Resistance
B. Current
C. Power
D. Voltage
Power
What is the unit of electromotive force?
A. The volt
B. The watt
C. The ampere
D. The ohm
The volt
What describes the number of times per second that an alternating current makes a complete cycle?
A. Pulse rate
B. Speed
C. Wavelength
D. Frequency
Frequency
In which type of circuit is current the same through all components?
A. Series
B. Parallel
C. Resonant
D. Branch
Series
In which type of circuit is voltage the same across all components?
A. Series
B. Parallel
C. Resonant
D. Branch
Parallel
How many milliamperes is 1.5 amperes?
A. 15 milliamperes
B. 150 milliamperes
C. 1500 milliamperes
D. 15,000 milliamperes
1500 milliamperes
What is another way to specify a radio signal frequency of 1,500,000 hertz?
A. 1500 kHz
B. 1500 MHz
C. 15 GHz
D. 150 kHz
1500 kHz
How many volts are equal to one kilovolt?
A. One one-thousandth of a volt
B. One hundred volts
C. One thousand volts
D. One million volts
One thousand volts
How many volts are equal to one microvolt?
A. One one-millionth of a volt
B. One million volts
C. One thousand kilovolts
D. One one-thousandth of a volt
One one-millionth of a volt
Which of the following is equal to 500 milliwatts?
A. 0.02 watts
B. 0.5 watts
C. 5 watts
D. 50 watts
0.5 watts
If an ammeter calibrated in amperes is used to measure a 3000- milliampere current, what reading would it show?
A. 0.003 amperes
B. 0.3 amperes
C. 3 amperes
D. 3,000,000 amperes
3 amperes
If a frequency display calibrated in megahertz shows a reading of 3.525 MHz, what would it show if it were calibrated in kilohertz?
A. 0.003525 kHz
B. 35.25 kHz
C. 3525 kHz
D. 3,525,000 kHz
3525 kHz
How many microfarads are equal to 1,000,000 picofarads?
A. 0.001 microfarads
B. 1 microfarad
C. 1000 microfarads
D. 1,000,000,000 microfarads
1 microfarad