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20 Cards in this Set
- Front
- Back
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Electronics Information - ASVAB (full) test1: Which of the following symbols represents a diode?A. 1B. 2C. 3D. 4
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B. 2B. Symbol 2 represents a diode.
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Electronics Information - ASVAB (full) test2: Electronic current is measured inA. farads.B. volts.C. amperes.D. ohms.
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C. amperes.C. Electronic current is measured in amperes. Capacitance is measured in farads. Voltage difference is measured in volts. Resistors are measured in ohms.
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Electronics Information - ASVAB (full) test3: The total resistance for this circuit if all resistors are 200 ohms isA. 100 ohms.B. 200 ohms.C. 150 ohms.D. 400 ohms.
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A. 100 ohms.A. Total resistance for parallel resistors is ??
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Electronics Information - ASVAB (full) test4: For the lamp to be turned on in the following circuitA. switch 1only should be closed.B. switch 2 only should be closed.C. switches 1 and 2 only should be closed.D. all the switches must be closed.
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C. switches 1 and 2 only should be closed.C. Switch 1 and switch 2 only should be closed. Switch 3 must be opened; otherwise, it will cause a short circuit.
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Electronics Information - ASVAB (full) test5: A voltmeter is a device used for measuringA. electrical current.B. electrical charge.C. energy.D. difference in voltage.
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D. difference in voltage.D. A voltmeter is a device used to measure the difference in voltage. An ammeter is used to measure electrical current. Electrical charge or energy cannot be measured by a voltmeter.
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Electronics Information - ASVAB (full) test6: Leather gloves must be used whenA. working with low-power transistors.B. working with live high-voltage devices.C. testing low-power DC circuits.D. designing a low-power circuit.
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B. working with live high-voltage devices.B. Leather gloves withstand high voltage.
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Electronics Information - ASVAB (full) test7: The frequency of this signal isA. 100 Hz.B. 10 Hz.C. 5 Hz.D. 1 Hz.
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C. 5 Hz.C. Frequency of a wave is given as ?.
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Electronics Information - ASVAB (full) test8: An AM radio signal isA. amplitude modulated.B. frequency modulated.C. phase modulated.D. DC modulated.
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A. amplitude modulated.A. An AM modulated signal is an amplitude modulated signal. FM signals are frequency modulated signals. PSK signals are phase modulated signals. DC cannot be used for modulation.
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Electronics Information - ASVAB (full) test9: The reading of the ammeter in this circuit isA. 10:00 AMB. 5:00 AMC. 1:00 AMD. 2:00 AM
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C. 1:00 AMC. The ammeter in the circuit reads the value of the current flowing in the resistor. The current flowing is calculated as V/R=10/10=1A.
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Electronics Information - ASVAB (full) test10: In order to protect an electric circuit, the following component can be used:A. a fuseB. a capacitorC. an inductorD. an ammeter
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A. a fuseA. In order to protect an electric circuit, a fuse can be used. Once the current rating is higher than the fuse rating, the fuse will break, preventing the flow of current.
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Electronics Information - ASVAB (full) test11: Which of these symbols represents a bipolar junction transistor (BJT)?A. 1B. 2C. 3D. 4
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C. 3C. Symbol 3 represents a bipolar junction transistor (BJT).
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Electronics Information - ASVAB (full) test 12: A signal is transmitted wirelessly by carrying it on A. a square wave. B. a DC signal. C. a triangular wave. D. a high-frequency sinusoidal wave. |
D. a high-frequency sinusoidal wave.D. A signal is transmitted by being carried on a high frequency sinusoidal signal called a carrier signal.
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Electronics Information - ASVAB (full) test13: The signal s(t) = 10 sin (120pt) has the following amplitude and frequency, respectively:A. 5 V and 120 HzB. 10 V and 60 HzC. 10 V and 120 HzD. 5 V and 60 Hz
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B. 10 V and 60 HzB. The signal s(t) can be written in the form s(t) = amplitude × sin(2pft), so that the amplitude is 10 V and the frequency is 60 Hz.
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Electronics Information - ASVAB (full) test14: The reading of the voltmeter in this circuit isA. 5 VB. 10 VC. 0 VD. 2.5 V
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C. 0 VC. Since all of the resistors are equal in value, then the currents in both branches of the circuit are equal. This makes the voltage difference between the leads of the voltmeter equal to zero.
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Electronics Information - ASVAB (full) test15: An ohmmeter is a device used to measureA. resistance.B. voltage.C. power.D. current.
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A. resistance.A. An ohmmeter is a device used to measure resistance. A voltmeter is used to measure a voltage difference. A wattmeter is used to measure power, and an ammeter is used to measure current.
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Electronics Information - ASVAB (full) test16: A certain signal is carried on a radio signal by using the following electronic component:A. resistorB. mixerC. capacitorD. on-off switch
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B. mixerB. Signals are carried on other high frequency signals by frequency mixers.
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Electronics Information - ASVAB (full) test17: In a diode (PN Junction), the current flowsA. from anode to cathode.B. from cathode to anode.C. in both directions.D. when voltage is below threshold.
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A. from anode to cathode.A. A diode permits the flow of the current in one direction only: from the anode to the cathode, when the voltage applied is greater than the threshold level.
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Electronics Information - ASVAB (full) test18: A component of a parts list has the following specifications: "10 mH." The component specified is aA. capacitor.B. transistor.C. coil.D. resistor.
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C. coil.C. A coil inductance is measured in henrys. Capacitance is measured in farads. Transistors have numbers to identify them. Resistance is measured in ohms.
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Electronics Information - ASVAB (full) test19: Electronic devices are grounded toA. reduce the cost.B. protect the user.C. reduce the power dissipation.D. enhance performance.
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B. protect the user.B. Electronic devices are grounded to protect the user from an electric shock.
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Electronics Information - ASVAB (full) test20: The power dissipated across the resistors in the following circuit isA. 0.3 watt.B. 0.5 watt.C. 1.0 watt.D. 1.5 watt.
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A. 0.3 watt.A. Power dissipated in the circuit can be calculated as ?.
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