Online Electronics Test - Electronics Test 4
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.
The number 560,000 is expressed in scientific notation.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Quantities and Units
2.
Which part of an atom has no electrical charge?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Voltage and Current
3.
One coulomb passing a point in one second is one:
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Voltage and Current
4.
An 8-ohm resistor is in series with a lamp. The circuit current is 1 A. With 20 V applied, what voltage is being allowed for the lamp?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Series Circuits
5.
In a series circuit, the current flowing out of a resistor won't always equal the current flowing into that resistor.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Series Circuits
6.
The phase angle between the two waveforms in the given circuit equals _____.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Alternating Current and Voltage
7.
If the frequency increases in the given circuit, how would the total current change?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : RC Circuits
8.
A step-up transformer will have a turns ratio greater than 1.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Inductors
9.
What is the current through the capacitor in the given circuit?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : RLC Circuits and Resonance
10.
What is the true power consumed in a 30 V series RLC circuit if Z = 20 ohms and R = 10 ohms?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : RLC Circuits and Resonance
11.
The ___ oscillator takes advantage of the piezoelectric effect.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Transistors and Applications
12.
A differential amplifier has a common-mode gain of 0.2 and a common-mode rejection ratio of 3250. What would the output voltage be if the single-ended input voltage was 7 mV rms?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Operational Amplifiers
13.
Which circuit is known as a current-to-voltage converter?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Special-Purpose Op-Amp Circuits
14.
One ampere of current flowing through one ohm of resistance is equal to:
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Resistance and Power
15.
How many connections does a potentiometer have?
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
A potentiometer uses three connections, as opposed to a rheostat, which only employs two. Having three connections allows the potentiometer to vary voltage. Both the potentiometer and the rheostat are classified as variable resistors.
Discuss about this problem : Discuss in Forum
Learn more problems on : Resistance and Power
16.
DC current flows in one direction, while ac current rises from zero to a maximum, then falls to zero in one direction, then rises to a maximum, then falls to zero in the opposite direction.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Alternating Current vs Direct Current
17.
When and who discovered that more than one transistor could be constructed on a single piece of semiconductor material:
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Semiconductor Principles
18.
In this analog amplifier the input is in phase with the output.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Bipolar Junction Transistors (BJT)
19.
The process of converting a decimal number to its binary equivalent is called binary conversion.
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Number Systems and Codes
20.
When the output of a standard TTL gate is HIGH, it can ___________________.
sink 16 mA of current from the attached input gates
source 400 
A of current to no more than 10 attached gates
A of current to no more than 10 attached gatessource 16 mA of current to no more than 10 attached gates
sink a maximum of 400 A from no more than 10 load gates
A from no more than 10 load gatesYour Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Standard Logic Devices (SLD)
*** END OF THE TEST ***
Time Left: 00:29:56
Post your test result / feedback here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers