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| 1.
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When working with static sensitive devices and circuits, technicians should: |
| | A) | wear a wrist strap |
| | B) | use tools with metal handles |
| | C) | ground the chassis before measuring resistance |
| | D) | wear only cotton clothing |
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| 2.
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What is the expected Output for the circuit shown below?
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| | A) | -14 Vdc, 0 Vac |
| | B) | 5 Vdc, 5 Vac |
| | C) | 0 Vdc, 5 Vac |
| | D) | none of the above |
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| 3.
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Which function generator waveform generally makes it easy to spot distortion? |
| | A) | pulse |
| | B) | square |
| | C) | sine |
| | D) | triangle |
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| 4.
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R2 below is open. What can be expected?
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| | A) | the diodes will melt |
| | B) | the line fuse will blow |
| | C) | the dc voltage at the junction of Q3 and Q4 will be abnormally high |
| | D) | Q3 and Q4 will be extremely hot |
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| 5.
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An op-amp is suspected of latch-up. What is the expected output voltage if this actually happens? |
| | A) | 0 Vdc, 12 Vac |
| | B) | impossible to predict |
| | C) | the dc output will be at either the positive or the negative rail |
| | D) | 0 Vdc, 0 Vac |
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| 6.
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The 5 k resistor below is open. What is the expected result?
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| | A) | both op-amps will burn out |
| | B) | the 741 on the right will burn out |
| | C) | the 741 on the left will burn out |
| | D) | none of the above |
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| 7.
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A high gain system has a faulty shield connection at its input. The most likely symptom is: |
| | A) | low power supply voltages |
| | B) | high power supply voltages |
| | C) | a blown fuse |
| | D) | noise or hum in the output |
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| 8.
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The 10 F capacitor below is open. The symptom will be:
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| | A) | no output |
| | B) | Q3 will get hot and burn out |
| | C) | dc error at the junction of the output transistors |
| | D) | a distorted output |
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| 9.
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On average, which of the following devices is least likely to fail? |
| | A) | integrated circuit |
| | B) | mylar capacitor |
| | C) | electrolytic capacitor |
| | D) | power transistor |
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| 10.
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Efficient troubleshooters use: |
| | A) | only oscilloscopes |
| | B) | a system view |
| | C) | trial and error |
| | D) | all of the above |
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