Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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T6D01 Which
of the following devices or circuits changes an alternating current into a varying direct current
signal?
a. | Transformer | c. | Amplifier | b. | Rectifier | d. | Reflector |
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2.
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T6D02 What is a relay?
a. | An electrically-controlled switch | c. | An optical sensor | b. | A current
controlled amplifier | d. | A pass transistor |
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3.
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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 |
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4.
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T6D04 Which of the following displays an
electrical quantity as a numeric value?
a. | Potentiometer | c. | Meter | b. | Transistor | d. | Relay |
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5.
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T6D05 What type of circuit controls the
amount of voltage from a power supply?
a. | Regulator | c. | Filter | b. | Oscillator | d. | Phase inverter |
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6.
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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 |
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7.
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T6D07 Which of the following is commonly used
as a visual indicator?
a. | LED | c. | Zener
diode | b. | PET | d. | Bipolar
transistor |
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8.
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T6D08 Which of the following is combined with
an inductor to make a tuned circuit?
a. | Resistor | c. | Potentiometer | b. | Zener
diode | d. | Capacitor |
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9.
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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 |
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10.
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T6D10 What is the function of component 2 in
Figure Tl?
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 naves |
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11.
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T6D11 Which of the following is a 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 nave ratio | b. | A type of voltage
regulator | d. | A circuit designed to provide high-fidelity
audio |
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12.
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T6D12 Which of the following is a
common reason to use shielded wire?
a. | To decrease I tie resistance of DC power
connections | c. | To prevent coupling of unwanted signals to or from the
wire | b. | To increase the current carrying capability of the
wire | d. | To couple the wire to other signals |
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