Basic Electrical Engineering Quiz: Test!
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Test your knowledge in Basic Electrical Engineering with this engaging quiz! Explore fundamental concepts like current, resistivity, Ohm's Law, and electrical energy. Ideal for students and professionals looking to assess or reinforce their understanding of electrical principles.
- 1.
What is the unit of current?
- A.
Ampere
- B.
Voltage
- C.
Meter
- D.
None of above
Correct Answer
A. Ampere -
- 2.
Which of the following materials possesses the least specific resistivity?
- A.
Aluminium
- B.
Copper
- C.
Silver
- D.
Iron
- E.
None of Above
Correct Answer
C. SilverExplanation
The resistivity of silver is about 1.59 × 10−8 Ωm at 20 degrees Celsius.Rate this question:
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- 3.
The Curve representing Ohm's law is?
- A.
Linear
- B.
Hyperbolic
- C.
Parabolic
- D.
Triangular
Correct Answer
A. Linear -
- 4.
The SI unit of electrical energy is?
- A.
Watt-Second
- B.
Joule
- C.
KWh
- D.
Volt-Ampere Second
Correct Answer
B. JouleExplanation
Joule is the SI Unit of Energy all others are the unit of Energy but not the SI Unit of energy.Rate this question:
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- 5.
Two wires A and B of the same Material but of different lengths L and 2L have the radius r and 2r respectively. The ratio of specific resistance will be?
- A.
1:4
- B.
1:8
- C.
1:1
- D.
1:2
Correct Answer
C. 1:1Explanation
As the materials are same (pA=pB) the ratio will be 1:1Rate this question:
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- 6.
Four resistances 2Ω,4Ω,5Ω,20Ω
- A.
1Ω
- B.
2Ω
- C.
4Ω
- D.
5Ω
Correct Answer
A. 1ΩExplanation
1/R=1/R1+1/R1 +1/R1+1/R1
=1/2+1/4 +1/5+1/20
=10+5+4+1/20
=20/20
=1ΩRate this question:
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- 7.
Electrical conductivity of metals is typically of the order of (in Ω-1*m-1)
- A.
107
- B.
105
- C.
10-4
- D.
10-6
Correct Answer
A. 107Explanation
Metals have high electrical conductivity due to the presence of free electrons that can easily move through the material. The unit of electrical conductivity is Ω-1*m-1, which represents the ease with which electric current can flow through a material. A conductivity value of 107 Ω-1*m-1 indicates a very high conductivity, meaning that metals can conduct electricity very effectively.Rate this question:
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- 8.
Active Element in the circuit is one which
- A.
Dissipates Energy
- B.
Receive Energy
- C.
Both receives and supplies
- D.
Supplies energy
Correct Answer
D. Supplies energyExplanation
Definition :- Active elements in the circuit is one which supplies energyRate this question:
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- 9.
An electric heater draws 3.5 A from a 110 V source. The resistance of the heating elements is approximately?
- A.
31Ω
- B.
3.1Ω
- C.
385Ω
- D.
38.5Ω
Correct Answer
A. 31ΩExplanation
V=I*R
R=V/I
=110/3.5
=31ΩRate this question:
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- 10.
We have three resistances each of 1Ω,2Ω and 3Ω. If all the three resistances are to be connected in a circuit, how many different values of equivalent resistances are possible?
- A.
Five
- B.
Six
- C.
Seven
- D.
Eight
Correct Answer
D. EightExplanation
R1=1Ω,R2=1Ω R3=1Ω
1) R1, R2, R3 in series
2)R1, R2, R3 in parallel
3)R1,in series with parallel combination R2 &R3
4)R2,in series with parallel combination R1 &R3
5)R3,in series with parallel combination R1 &R2
6)R1,in parallel with series combination R2 &R3
7)R2,in parallel with series combination R1 &R3
8)R3,in parallel with series combination R2 &R1
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Current Version
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Apr 19, 2024Quiz Edited by
ProProfs Editorial Team -
Apr 17, 2020Quiz Created by
Ashish Desai
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