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Online Electronic Devices Test - Electronic Devices Test 10

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.
What is the value of the transition capacitance for a silicon diode when VD = 0? (Choose the best answer.)
1 pF
3 pF
5 pF
10 pF
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Semiconductor Diodes
2.
The intensity of LED is greatest at ________ degrees and the least at ________ degrees.
0, 90
45, 90
0, 45
90, 180
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Semiconductor Diodes
3.
In a voltage-divider circuit, which one of the stability factors has the least effect on the device at very high temperature?
S(ICO)
S(VBE)
S()
Undefined
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : DC Biasing-BJTs
4.
Which of the following gains is less than 1 for a common-base configuration?
Ai
Av
Ap
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : BJT Amplifiers
5.
The dc load line and ac load line both have the same ________ .
x-intercept
y-intercept
slope
Q-point
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : BJT Amplifiers
6.
________ has high input impedance, fast switching speeds, and lower operating power levels.
CMOS
FET
BJT
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : FET Devices
7.
The E-MOSFET is quite popular in ________ applications.
digital circuitry
high-frequency
buffering
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : FET Amplifiers
8.
The steeper the slope of the ID versus VGS curve, the ________ the level of gm.
less
same
greater
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : FET Amplifiers
9.
The Miller effect is meaningful in the ________ amplifier.
inverting
noninverting
inverting/noninverting
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : BJT and FET Frequency Response
10.
Negative feedback added to an op-amp ________ the bandwidth and ________ the gain.
increases, increases
increases, decreases
decreases, decreases
decreases, increases
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Operational Amplifiers
11.
You have an oscilloscope across RL and it shows a zero signal voltage. The problem might be that

C3 is open.
BE1 is open.
BE2 is open.
R1 is open.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Power Amplifiers
12.
In a comparator, the reference voltage is connected to ________ input terminal and the input signal is applied to ________ input terminal.
only the minus, only the plus
only the plus, only the minus
either the plus or minus, the other
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Linear-Digital ICs
13.
When the loop is in lock in a PLL, the input frequency is ________ the output frequency from the VCO.
the same as
greater than
smaller than
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Linear-Digital ICs
14.
Zener diodes with breakdown voltages less than 5 V operate predominantly in what type of breakdown?
avalanche
zener
varactor
Schottky
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Special-Purpose Diodes
15.
Both junctions of a BJT should be forward-biased for linear operation.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Bipolar Junction Transistors
16.
Refer to this figure. In the voltage-divider biased npn transistor circuit, if R1 opens, the transistor is

saturated.
cutoff.
nonconducting.
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Transistor Bias Circuits
17.

Identify the p-channel E-MOSFET.

a
b
c
d
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Field-Effect Transistors
18.
The anode-to-gate voltage can be used to turn the PUT on or off.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Thyristors
19.
The SCS is turned on with the cathode gate, and turned off with the anode gate.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Thyristors
20.
A low-pass filter has a cutoff frequency of 1.23 kHz. Determine the bandwidth of the filter.
2.46 kHz
1.23 kHz
644 Hz
not enough information given
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Active Filters
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