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Online Electronic Devices Test - Electronic Devices Test 5

Instruction:
  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20

Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
In n-type material the ________ is called the majority carrier.
electron
hole
proton
neutron
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Semiconductor Diodes
2.
What best describes the circuit?

Full-wave rectifier
Half-wave rectifier
Clipper
Clamper
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Diode Applications
3.
The output frequency of a full-wave rectifier is ________ the input frequency.
one-half
equal to
twice
one-quarter
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Diode Applications
4.
In what decade was the first transistor created?
1930s
1940s
1950s
1960s
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : BJT Devices
5.
Calculate the approximate value of the maximum power rating for the transistor represented by the output characteristics of Figure 4.1?
250 mW
170 mW
50 mW
0 mW
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : DC Biasing-BJTs
6.
What is the unit of the parameter ho?
Volt
Ohm
Siemen
No unit
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(Not Answered)
Correct Answer: Option
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Learn more problems on : BJT Amplifiers
7.
Refer to the following characteristic curve. Calculate the resistance of the FET at VGS = –0.25 V if ro = 10 k.

1.1378 k
113.78
11.378
11.378 k
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(Not Answered)
Correct Answer: Option
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Learn more problems on : FET Devices
8.
For ________, Shockley's equation is applied to relate the input and the output quantities.
JFETs
depletion-type MOSFETs
enhancement-type MOSFETs
JFETs and depletion-type MOSFETs
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : DC Biasing-FETs
9.
Which operation class is generally used in radio or communications?
A
B
AB
C
D
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Power Amplifiers
10.
Class B operation is provided when the dc bias leaves the transistor biased just off, the transistor turning on when the ac signal is applied.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Power Amplifiers
11.
A silicon power transistor is operated with a heat sink ( SA = 1.5ºC/W). The transistor, rated at 150 W (25ºC), has JC = 0.5º C/W, and the mounting insulation has CS = 0.6 ºC/W. What is the maximum power that can be dissipated if the ambient temperature is 50ºC and TJmax = 200 ºC?
61.5 W
60.0 W
57.7 W
55.5 W
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Power Amplifiers
12.
Which of the following applications include a phase-locked loop (PLL) circuit?
Modems
Am decoders
Tracking filters
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Linear-Digital ICs
13.
The start-up gain of an oscillator must be ________ one.
equal to
less than
greater than
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Oscillator Circuits
14.
A type of regulator circuit that is quite popular for its efficient transfer of power to the load is the ________.
current-limiting voltage regulator
switching regulator
foldback limiting regulator
op-amp series regulator
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Voltage Regulators
15.
A reverse-biased silicon diode has about 0.7 V across it.
True
False
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Semiconductors
16.
For a given input frequency, a half-wave rectifier is easier to filter than a full-wave rectifier.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Diode Applications
17.
VRRM is the same as PIV rating.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Diode Applications
18.
Refer to the given figure. The most probable cause of trouble, if any, from these voltage measurements is

the base-emitter junction is open.
RE is open.
a short from collector to emitter.
no problems.
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Transistor Bias Circuits
19.
Collector-feedback bias is another name for base bias.
True
False
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Transistor Bias Circuits
20.

Refer to the given figure. ID = 6 mA. Calculate the value of VDS.

–9 V
9 V
6 V
–3 V
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Field-Effect Transistors
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