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Diodes and Applications problems
1. If a 169.7 V half-wave peak has an average voltage of 54 V, what is the average of two full-wave peaks?
Options
A. 119.9 V
B. 108.0 V
C. 115.7 V
D. 339.4 V
Show Answer
Scratch Pad
Discuss
Correct Answer: 108.0 V
2. List three diode packages:
Options
A. clip package, DIP, small current package
B. DIP, small current package, large current package
C. small current package, large current package, and SIP
D. small current package, large current package, clip package
Show Answer
Scratch Pad
Discuss
Correct Answer: small current package, large current package, clip package
3. When checking a diode, low resistance readings both ways indicate the diode is:
Options
A. open
B. satisfactory
C. faulty
D. not the problem
Show Answer
Scratch Pad
Discuss
Correct Answer: faulty
4. With a 12 V supply, a silicon diode, and a 370-ohm resistor in series, what voltage will be dropped across the diode?
Options
A. 0.3 V
B. 0.7 V
C. 0.9 V
D. 1.4 V
Show Answer
Scratch Pad
Discuss
Correct Answer: 0.7 V
5. A characteristic curve is the result of a current versus voltage plot of diode activity, which begins at the:
Options
A. 3rd quadrant
B. current plot
C. graph origin
D. voltage plot
Show Answer
Scratch Pad
Discuss
Correct Answer: graph origin
6. What circuit activity may shift a characteristic curve so that diode operating points are different?
Options
A. higher power (heat)
B. higher resistance
C. lower voltage
D. lower current
Show Answer
Scratch Pad
Discuss
Correct Answer: higher power (heat)
7. What is wrong with this circuit?
Options
A. The zener is open.
B. The zener is shorted.
C. nothing
D. not enough data
Show Answer
Scratch Pad
Discuss
Correct Answer: The zener is open.
8. What is the current through the diode?
Options
A. 1 mA
B. 0.975 mA
C. 0.942 mA
D. 0.0 mA
Show Answer
Scratch Pad
Discuss
Correct Answer: 1 mA
9. One of the advantages of using transformer coupling in a half-wave rectifier is that it allows the ac source to be directly connected to the load.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
10. A zener diode can be tested with an ohmmeter.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
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More in Electronics:
Alternating Current and Voltage
Alternating Current vs Direct Current
Analog and Digital Converters
Analog to Digital
Arithmetic Operations and Circuits
Basic Op-Amp Circuits
Bipolar Junction Transistors (BJT)
Capacitors
Combinational Logic Circuits
Computer Hardware and Software
Diodes and Applications
Field Effect Transistors (FET)
Flip-Flops and Timers
Inductors
Logic Circuit Simplification
Logic Gates
Magnetism and Electromagnetism
Measurement, Conversion and Control
Number Systems and Codes
Ohm's Law
Operational Amplifiers
Parallel Circuits
Programmable Logic Devices (PLD)
Quantities and Units
RC Circuits
Resistance and Power
RL Circuits
RLC Circuits and Resonance
Semiconductor Memory
Semiconductor Principles
Sequential Logic Circuits
Series-Parallel Circuits
Series Circuits
Special-Purpose Op-Amp Circuits
Standard Logic Devices (SLD)
Testing and Troubleshooting
Thyristors and Tranducers
Time Response of Reactive Circuits
Transformers
Transistors and Applications
Voltage and Current
