Multiple Choice Questions on Basic Electrical Engineering. Take the following test to test your basic knowledge of electrical.
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Multiple choice questions on Basic Electrical Engineering. Each question has four answer options of which only one is correct. For every correct answer you will earn 1 point and the result will be displayed at the end of the quiz.
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Question 1 of 18
1. Question
Resistivity of a conductor depends on –
Correct
Resistivity is a property of material.
Incorrect
Resistivity is a property of material.

Question 2 of 18
2. Question
What is the unit of “Resistivity”?
Correct
electrical resistivity ρ = R.A/L
where, R is resistance in Ohm, A is area of cross section in metersquared, L is length in meter.Incorrect
electrical resistivity ρ = R.A/L
where, R is resistance in Ohm, A is area of cross section in metersquared, L is length in meter. 
Question 3 of 18
3. Question
What would be the resistance of a resistor with colour bands > red, red, brown, gold?
Correct
Resistor colour coding is as follows:
Black=0, Brown=1, Red=2, Orange=3, Yellow=4, Green=5, Blue=6, Violet=7, Gray=8, White=9, Silver=10%, Gold=5%Incorrect
Resistor colour coding is as follows:
Black=0, Brown=1, Red=2, Orange=3, Yellow=4, Green=5, Blue=6, Violet=7, Gray=8, White=9, Silver=10%, Gold=5% 
Question 4 of 18
4. Question
℧ (Mho or Siemens) is the unit of ______.
Correct
Conductance is the reciprocal of Resistance and Admittance is the reciprocal of Impedance.
Incorrect
Conductance is the reciprocal of Resistance and Admittance is the reciprocal of Impedance.

Question 5 of 18
5. Question
Current flowing through a shortcircuiting link is _______.
Correct
Incorrect

Question 6 of 18
6. Question
Which is the best conductor of electricity out of the following options?
Correct
Incorrect

Question 7 of 18
7. Question
The resistance of a conductor varies inversely proportional to ______.
Correct
Resistance of a conductor is given as R=ρL/A
Where, ρ = resistivity of the conductor material, L = length of the conductor, A = area of cross section of the conductor.Incorrect
Resistance of a conductor is given as R=ρL/A
Where, ρ = resistivity of the conductor material, L = length of the conductor, A = area of cross section of the conductor. 
Question 8 of 18
8. Question
With rise in temperature, resistance of pure metals _______.
Correct
Incorrect

Question 9 of 18
9. Question
How much resistance is required to limit the current from a 12v battery to 3.6 mA?
Correct
From Ohm’s law, R = V/I
Incorrect
From Ohm’s law, R = V/I

Question 10 of 18
10. Question
An electric filament bulb can work on –
Correct
An electric filament bulb consists of a metal filament which heats up and glows when current passes through it.
Incorrect
An electric filament bulb consists of a metal filament which heats up and glows when current passes through it.

Question 11 of 18
11. Question
Which of the following is not a type of energy source?
Correct
Rheostat is just a variable resistor, not an energy source.
Incorrect
Rheostat is just a variable resistor, not an energy source.

Question 12 of 18
12. Question
If two resistors of 2 Ω and 6 Ω respectively are connected in parallel. The equivalent resistance will be _______.
Correct
If resistors R1, R2, R3 …. are connected in parallel, the equivalent resistance is given as 1/Req = (1/R1) + (1/R2) + (1/R3) + …..
Resistors connected in series, then the equivalent resistance is given by simple arithmetic sum of all the resistors in series.Incorrect
If resistors R1, R2, R3 …. are connected in parallel, the equivalent resistance is given as 1/Req = (1/R1) + (1/R2) + (1/R3) + …..
Resistors connected in series, then the equivalent resistance is given by simple arithmetic sum of all the resistors in series. 
Question 13 of 18
13. Question
If two capacitors of 2 µF each are connected in parallel, what would be the equivalent capacitance
Correct
Capacitors in series => 1/C_{eq} = (1/C1) + (1/C2) + ….
Capacitors in parallel => C_{eq} = C1 + C2 + ….Incorrect
Capacitors in series => 1/C_{eq} = (1/C1) + (1/C2) + ….
Capacitors in parallel => C_{eq} = C1 + C2 + …. 
Question 14 of 18
14. Question
Two inductors of 10 mH each are connected together in series in a way that their magnetic field aid each other (cumulative coupling). If mutual inductance between them is 5 mH, calculate the equivalent inductance of the series combination.
Correct
If two inductors are connected in series with cumulative coupling => L_{eq} = L_{1} + L_{2} + 2M (M is mutual inductance).
Incorrect
If two inductors are connected in series with cumulative coupling => L_{eq} = L_{1} + L_{2} + 2M (M is mutual inductance).

Question 15 of 18
15. Question
An inductor opposes a sudden change in ______.
Correct
Incorrect

Question 16 of 18
16. Question
A capacitor opposes sudden change in ______.
Correct
Incorrect

Question 17 of 18
17. Question
Internal resistance of an ideal voltage source is ________ whereas, internal resistance of an ideal current source is _______.
Correct
Incorrect

Question 18 of 18
18. Question
What is the SI unit of electric power?
Correct
Incorrect