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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.
A voltage divider is always a _____
series-parallel circuit
series circuit
parallel circuit
bridge circuit
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Series Circuits
2.
The ability of a material to maintain a magnetized state (without the presence of a magnetizing force) is called retentivity.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Magnetism and Electromagnetism
3.
What is the fourth harmonic of a fundamental frequency of 400 Hz?
100 Hz
4 kHz
4 Hz
1.6 kHz
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Alternating Current and Voltage
4.
One revolution of a conductor through the magnetic field of a basic generator will produce two complete sine waves.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Alternating Current and Voltage
5.
Capacitive reactance values connected in series offer
an increase in total XC
a decrease in total XC
no change in total XC
total opposition to voltage in the circuit
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Capacitors
6.
Capacitive reactance is inversely proportional with frequency.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Capacitors
7.
An ac generator will produce a constant waveform.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Inductors
8.
As frequency decreases in a parallel RL circuit the impedance also decreases.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : RL Circuits
9.

What is the current through the capacitor in the given circuit?

3.5 mA
5.5 mA
9 mA
11.4 mA
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : RLC Circuits and Resonance
10.
What is the impedance of the circuit?

12.2 k
14.5 k
17.8 k
20.3 k
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : RLC Circuits and Resonance
11.

The output voltage at the resonant frequency is ______ in the given circuit. If a 10 komega.gif load is connected.

553 mV
5.65 V
6.01 V
6.5 V


Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : RLC Circuits and Resonance
12.
An ideal operational amplifier has
infinite output impedance
zero input impedance
infinite bandwidth
All of the above
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Operational Amplifiers
13.
A zero-level detector is a type of comparator circuit.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Basic Op-Amp Circuits
14.
The external resistor of a typical instrumentation amplifier is used to set the ________.
impedance
rejection ratio
gain
isolation
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Special-Purpose Op-Amp Circuits
15.
How is a 3.9 komega.gif resistor color-coded?
red, white, red, gold
red, green, orange, silver
orange, white, red, gold
orange, green, orange, silver
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Resistance and Power
16.
When not in use, MOSFET pins are kept at the same potential through the use of:
shipping foil
nonconductive foam
conductive foam
a wrist strap
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Field Effect Transistors (FET)
17.
What type of application would use a photovoltaic cell?
an automobile horn
a TI 92 calculator
a magnetic field detector
a remote power source
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Thyristors and Tranducers
18.
PLAs, CPLDs, and FPGAs are all which type of device?
SLD
PLD
EPROM
SRAM
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Programmable Logic Devices (PLD)
19.
The basic programmable logic array (PLA) contains a set of _____ gates, _____ gates, and ______ gates.
NOT, NAND, OR
NOT, AND, OR
NAND, AND, NOR
OR, NOR, AND
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Programmable Logic Devices (PLD)
20.
Sample-and-hold circuits in analog-to digital converters (ADCs) are designed to:
sample and hold the output of the binary counter during the conversion process
stabilize the comparator's threshold voltage during the conversion process
stabilize the input analog signal during the conversion process
sample and hold the D/A converter staircase waveform during the conversion process
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Analog and Digital Converters
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