2.3 KiB
T7D – Using basic test instruments: voltmeter, ammeter, and ohmmeter; Soldering
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T7D01 (B) Which instrument would you use to measure electric potential? #card
- A. An ammeter
- B. A voltmeter
- C. A wavemeter
- D. An ohmmeter
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T7D02 (B) How is a voltmeter connected to a component to measure applied voltage? #card
- A. In series
- B. In parallel
- C. In quadrature
- D. In phase
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T7D03 (A) When configured to measure current, how is a multimeter connected to a component? #card
- A. In series
- B. In parallel
- C. In quadrature
- D. In phase
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T7D04 (D) Which instrument is used to measure electric current? #card
- A. An ohmmeter
- B. An electrometer
- C. A voltmeter
- D. An ammeter
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T7D05 Question Removed (section not renumbered)
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T7D06 (C) Which of the following can damage a multimeter? #card
- A. Attempting to measure resistance using the voltage setting
- B. Failing to connect one of the probes to ground
- C. Attempting to measure voltage when using the resistance setting
- D. Not allowing it to warm up properly
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T7D07 (C) Which of the following measurements are made using a multimeter? #card
- A. Signal strength and noise
- B. Impedance and reactance
- C. Voltage and resistance
- D. All these choices are correct
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T7D08 (A) Which of the following types of solder should not be used for radio and electronic applications? #card
- A. Acid-core solder
- B. Lead-tin solder
- C. Rosin-core solder
- D. Tin-copper solder
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T7D09 (C) What is the characteristic appearance of a cold tin-lead solder joint? #card
- A. Dark black spots
- B. A bright or shiny surface
- C. A rough or lumpy surface
- D. Excessive solder
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T7D10 (A) What reading indicates that an ohmmeter is connected across a large, discharged capacitor? #card
- A. Increasing resistance with time
- B. Decreasing resistance with time
- C. Steady full-scale reading
- D. Alternating between open and short circuit
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T7D11 (B) Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter? #card
- A. Ensure that the applied voltages are correct
- B. Ensure that the circuit is not powered
- C. Ensure that the circuit is grounded
- D. Ensure that the circuit is operating at the correct frequency