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Online Electronics Test - Electronics Test - Random

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.
Adding 27.5 × 103 to 8.9 × 104 equals
36.4 × 107
116.5 × 104
28.39 × 103
1.165 × 105
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Quantities and Units
2.
Switches are either on or off, but can have multiple poles.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Voltage and Current
3.
A circuit is parallel between two points if ___ between those two points.
the voltage divides
more than one current path exists
all resistors are equal
there is only one current path
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Parallel Circuits
4.
What is the total inductance assuming no mutual inductance?

mcq8_1031_1.gif
0 mH
0.69 mH
12 mH
24 mH
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Inductors
5.
The _____ is the time it takes for a capacitor to fully charge or discharge.
transient time
pulse response
time constant
steady state
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Time Response of Reactive Circuits
6.
If the drain, source, and channel of a MOSFET are all a p-type material, and it operates in both modes, this is an n-channel D-MOSFET.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Transistors and Applications
7.
The gate-source junction of a JFET must be ________ for proper linear operation.
forward-biased
reverse-biased
either forward-biased or reverse-biased
neutral
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Transistors and Applications
8.
The ideal output impedance for an operational amplifier is 0 omega.gif.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Operational Amplifiers
9.
The resistive track of a rheostat or potentiometer can be classified as having either a linear or tapered resistance.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Resistance and Power
10.
When a depletion region of a transistor is large the barrier voltage is also large.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Semiconductor Principles
11.
In this analog amplifier the input is in phase with the output.

tfq12_1017_1.gif
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Bipolar Junction Transistors (BJT)
12.
Which of the following characterizes an analog quantity?
Discrete levels represent changes in a quantity.
Its values follow a logarithmic response curve.
It can be described with a finite number of steps.
It has a continuous set of values over a given range.
Your Answer: Option
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Correct Answer: Option
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Learn more problems on : Analog to Digital
13.
What is the difference between binary coding and binary coded decimal?
Binary coding is pure binary.
BCD is pure binary.
Binary coding has a decimal format.
BCD has no decimal format.
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Number Systems and Codes
14.
One example of the use of a Schmitt trigger is as a(n) _____
astable oscillator
transition pulse generator
pulse shaper
buffer
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Standard Logic Devices (SLD)
15.
Which type of decoder will select one of sixteen outputs, depending on the 4-bit binary input value?
hexadecimal
dual octal outputs
binary-to-hexadecimal
hexadecimal-to-binary
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Combinational Logic Circuits
16.
Which digital system translates coded characters into a more intelligible form?
encoder
display
counter
decoder
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Combinational Logic Circuits
17.
Parity checking can only detect an odd number of errors.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Combinational Logic Circuits
18.
For an S-R flip-flop to be SET or RESET, the respective input must be __________.
LOW
HIGH
installed with steering diodes
in parallel with a limiting resistor
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Flip-Flops and Timers
19.
Asynchronous inputs will cause the flip-flop to respond immediately with regard to the clock input.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Sequential Logic Circuits
20.
A machine cycle is the time it takes a microprocessor to fetch and execute a complete instruction.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Computer Hardware and Software
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