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Assignment 17

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

T5B01 How many milliamperes is 1.5 amperes?
a.
15 milliamperes
c.
1,500 milliamperes
b.
150 milliamperes
d.
15,000 milliamperes
 

 2. 

T5B02 What is another way to specify a radio signal frequency of 1,500,000 hertz?
a.
1500 kHz
c.
15 GHz
b.
1500 MHz
d.
150 kHz
 

 3. 

T5B03 How many volts are equal to one kilovolt?
a.
One one-thousandth of a volt
c.
One thousand volts
b.
One hundred volts
d.
One million volts
 

 4. 

T5B04 How many volts are equal to one microvolt?
a.
One one-millionth of a volt
c.
One thousand kilovolts
b.
One million volts
d.
One one-thousandth of a volt
 

 5. 

T5B05 Which of the following is equivalent to 500 milliwatts?
a.
0.02 watts
c.
5 watts
b.
0.5 watts
d.
50 watts
 

 6. 

T5B06 If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?
a.
0.003 amperes
c.
3 amperes
b.
0.3 amperes
d.
3,000,000 amperes
 

 7. 

T5B08 How many microfarads are 1,000,000 picofarads?
a.
0.001 microfarads
c.
1000 microfarads
b.
1 microfarad
d.
1,000,000,000 microfarads
 

 8. 

T5B09 What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?
a.
2 dB
c.
5 dB
b.
3 dB
d.
10 dB
 

 9. 

T5B10 What is the approximate amount of change, measured in decibels (dB), of a power decrease from 12 watts to 3 watts?
a.
-1 dB
c.
-6 dB
b.
-3 dB
d.
-9 dB
 

 10. 

T5B11 What is the approximate amount of change, measured in decibels (dB), of a power increase from 20 watts to 200 watts?
a.
10 dB
c.
18 dB
b.
12 dB
d.
28 dB
 

 11. 

T5B12 Which of the following frequencies is equal to 28,400 kHz?
a.
28.400 MHz
c.
284.00 MHz
b.
2.800 MHz
d.
28.400 kHz
 

 12. 

T5B13 If a frequency readout shows a reading of 2425 MHz, what frequency is that in GHz?
a.
0.002425 GHZ
c.
2.425 GHz
b.
24.25 GHz
d.
2425 GHz
 

 13. 

T6B07 What does the abbreviation LED stand for?
a.
Low Emission Diode
c.
Liquid Emission Detector
b.
Light Emitting Diode
d.
Long Echo Delay
 

 14. 

T6C01 What is the name for standardized representations of components in an electrical wiring diagram?
a.
Electrical depictions
c.
Schematic symbols
b.
Grey sketch
d.
Component callouts
 

 15. 

T6C02 What is component 1 in figure T1?
a.
Resistor
c.
Battery
b.
Transistor
d.
Connector
 

 16. 

T6C03 What is component 2 in figure T1?
a.
Resistor
c.
Indicator lamp
b.
Transistor
d.
Connector
 

 17. 

T6C04 What is component 3 in figure T1?
a.
Resistor
c.
Lamp
b.
Transistor
d.
Ground symbol
 

 18. 

T6C05 What is component 4 in figure T1?
a.
Resistor
c.
Battery
b.
Transistor
d.
Ground symbol
 

 19. 

T6C06 What is component 6 in figure T2?
a.
Resistor
c.
Regulator IC
b.
Capacitor
d.
Transistor
 

 20. 

T6C07 What is component 8 in figure T2?
a.
Resistor
c.
Regulator IC
b.
Inductor
d.
Light emitting diode
 

 21. 

T6C08 What is component 9 in figure T2?
a.
Variable capacitor
c.
Variable resistor
b.
Variable inductor
d.
Variable transformer
 

 22. 

T6C09 What is component 4 in figure T2?
a.
Variable inductor
c.
Potentiometer
b.
Double-pole switch
d.
Transformer
 

 23. 

T6C10 What is component 3 in figure T3?
a.
Connector
c.
Variable capacitor
b.
Meter
d.
Variable inductor
 

 24. 

T6C11 What is component 4 in figure T3?
a.
Antenna
c.
Dummy load
b.
Transmitter
d.
Ground
 

 25. 

T6C12 What do the symbols on an electrical circuit schematic diagram represent?
a.
Electrical components
c.
Digital codes
b.
Logic states
d.
Traffic nodes
 

 26. 

T6C13 Which of the following is accurately represented in electrical circuit schematic diagrams?
a.
Wire lengths
c.
The way components are interconnected
b.
Physical appearance of components
d.
All of these choices are correct
 

 27. 

T6D02 What best describes a relay?
a.
A switch controlled by an electromagnet
c.
An optical sensor
b.
A current controlled amplifier
d.
A pass transistor
 

 28. 

T6D03 What type of switch is represented by component 3 in figure T2?
a.
Single-pole single-throw
c.
Double-pole single-throw
b.
Single-pole double-throw
d.
Double-pole double-throw
 

 29. 

T6D04 Which of the following can be used to display signal strength on a numeric scale?
a.
Potentiometer
c.
Meter
b.
Transistor
d.
Relay
 

 30. 

T6D05 What type of circuit controls the amount of voltage from a power supply?
a.
Regulator
c.
Filter
b.
Oscillator
d.
Phase inverter
 

 31. 

T6D06 What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?
a.
Variable capacitor
c.
Transistor
b.
Transformer
d.
Diode
 

 32. 

T6D07 Which of the following is commonly used as a visual indicator?
a.
LED
c.
Zener diode
b.
FET
d.
Bipolar transistor
 

 33. 

T6D08 Which of the following is used together with an inductor to make a tuned circuit?
a.
Resistor
c.
Potentiometer
b.
Zener diode
d.
Capacitor
 

 34. 

T6D09 What is the name of a device that combines several semiconductors and other components into one package?
a.
Transducer
c.
Integrated circuit
b.
Multi-pole relay
d.
Transformer
 

 35. 

T6D10 What is the function of component 2 in Figure T1?
a.
Give off light when current flows through it
c.
Control the flow of current
b.
Supply electrical energy
d.
Convert electrical energy into radio waves
 

 36. 

T6D11 What is a simple resonant or tuned circuit?
a.
An inductor and a capacitor connected in series or parallel to form a filter
c.
A resistor circuit used for reducing standing wave ratio
b.
A type of voltage regulator
d.
A circuit designed to provide high fidelity audio
 

 37. 

T7D06 Which of the following might damage a multimeter?
a.
Measuring a voltage too small for the chosen scale
c.
Attempting to measure voltage when using the resistance setting
b.
Leaving the meter in the milliamps position overnight
d.
Not allowing it to warm up properly
 

 38. 

T7D07 Which of the following measurements are commonly made using a multimeter?
a.
SWR and RF power
c.
Impedance and reactance
b.
Signal strength and noise
d.
Voltage and resistance
 

 39. 

T7D08 Which of the following types of solder is best for radio and electronic use?
a.
Acid-core solder
c.
Rosin-core solder
b.
Silver solder
d.
Aluminum solder
 

 40. 


T7D09 What is the characteristic appearance of a cold solder joint?
a.
Dark black spots
c.
A grainy or dull surface
b.
A bright or shiny surface
d.
A greenish tint
 

 41. 

T7D10 What is probably happening when an ohmmeter, connected across an unpowered circuit, initially indicates a low resistance and then shows increasing resistance with time?
a.
The ohmmeter is defective
c.
The circuit contains a large inductor
b.
The circuit contains a large capacitor
d.
The circuit is a relaxation oscillator
 

 42. 

T7D11 Which of the following precautions should be taken when measuring circuit resistance with an ohmmeter?
a.
Ensure that the applied voltages are correct
c.
Ensure that the circuit is grounded
b.
Ensure that the circuit is not powered
d.
Ensure that the circuit is operating at the correct frequency
 



 
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