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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.
An electron is the smallest subatomic particle of negative charge that orbits the nucleus of the atom.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Voltage and Current
2.
Given a series circuit containing resistors of different values, which statement is not true?
The current through each resistor is the same.
The sum of the voltage drops across each resistive element will be equal to source voltage.
The total resistance is the sum of the value of the resistors.
The voltage drop across each resistor is the same.
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Series Circuits
3.
In a parallel resistive circuit:
there is more than one current path between two points
the voltage applied divides between the branches
the total branch power exceeds the source power
the total circuit conductance is less than the smallest branch conductance
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Parallel Circuits
4.
The total resistance in a parallel circuit is always less than the least resistor.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Parallel Circuits
5.
The term “integrator” is derived from a mathematical function in trigonometry.
True
False
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Capacitors
6.
A magnetic field results whenever a current flows through a conductor.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Inductors
7.

What is the resonant frequency in the given circuit?

6.5 kHz
53.7 kHz
107.4 kHz
18.1 MHz
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : RLC Circuits and Resonance
8.
An electron can move to another atom's orbit only while in the _______.
valence band
conduction band
orbit nearest the nucleus
covalent band
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Diodes and Applications
9.
What resistor type is found in SIPs and DIPs?
metal film
wirewound
metal oxide
thick film
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Resistance and Power
10.
Resistance is:
the opposition to current flow accompanied by the dissipation of heat
symbolized by R, measured in ohms, and directly proportional to conductance
directly proportional to current and voltage
represented by the flow of fluid in the fluid circuit
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Resistance and Power
11.
Minority carriers are many times activated by:
heat
pressure
dopants
forward bias
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Semiconductor Principles
12.
In the constant-current region, how will the IDS change in an n-channel JFET?
As VGS decreases ID decreases.
As VGS increases ID increases.
As VGS decreases ID remains constant.
As VGS increases ID remains constant.
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Field Effect Transistors (FET)
13.
A JFET can be either a current-controlled device or a voltage-controlled device.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Field Effect Transistors (FET)
14.
Sensor outputs destined for a digital computer system must first be processed by __________.
a DAC
an ADC
the MPU
a PLD
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Analog to Digital
15.
Convert the binary number 1011010 to hexadecimal.
5B
5F
5A
5C
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Number Systems and Codes
16.
How many storage locations are available when a memory device has twelve address lines?
144
512
2048
4096
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Semiconductor Memory
17.
A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 0101.
0.3125 V
3.125 V
0.78125 V
–3.125 V
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Analog and Digital Converters
18.
An 8-bit digital-to-analog converter (DAC) has a resolution of 0.125 V.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Analog and Digital Converters
19.
________ analog-to-digital converters (ADCs) use no clock signal, because there is no timing or sequencing required.
Actuator
Dual
Flash
Bipolar
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Analog and Digital Converters
20.
A coprocessor is a microprocessor designed with a limited instruction set optimized to perform arithmetic operations very quickly.
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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