This set of Basic Electrical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Kirchhoff’s Voltage Law”.
Explanation: Using KVL, 12-V1-8=0. V1= 4V.
2. KCL deals with the conservation of?
Explanation: KVL states that the sum of the potential energy and taken with the right sign is equal to zero, hence it is the conservation of energy since energy doesn’t enter or leave the system.
Explanation: Using voltage divider rule, V=10*12/30=4V.
Explanation: Using KVL, the matrix to find the loop currents are:
MATRIX( 0 -100)(I1)=(10)
MATRIX( -100 200)(I2) (10)
I1= -0.3, I2=-0.1.
5. The sum of the voltages over any closed loop is equal to __________
Explanation: According to KVL, the sum of the voltage over any closed loop is equal to 0.
6. What is the basic law that has to be followed in order to analyze the circuit?
a) Newton’s laws
b) Faraday’s laws
c) Ampere’s laws
d) Kirchhoff’s law
Explanation: Kirchhoff’s laws, namely Kirchhoff’s Current Law and Kirchhoff’s Voltage law are the basic laws in order to analyze a circuit.
7. Every____________ is a ____________ but every __________ is not a __________
a) Mesh, loop, loop, mesh
b) Loop, mesh, mesh, loop
c) Loop, mesh, loop, mesh
d) Mesh, loop, mesh, loop
Explanation: According to Kirchhoff’s Voltage Law, Every mesh is a loop but every loop is not a mesh.
Explanation: In loop 1: i1(2+3+4)-i2*4-9-4+5=0 => 9i1-4i2=8.
In loop 2 i2(4+1+5)-4i1-5=0 =>-4i1+10i2=5.
Solving these equations simultaneously i2=1.041A and i1=1.352A
Explanation: For branch A: VAC=15*20/(25+15)=7.5V
For branch B: VBC= 10*20/(10+40)=4V
Applying KVL to loop ABC:
10. KVL is applied in ____________
a) Mesh analysis
b) Nodal analysis
c) Both mesh and nodal
d) Neither mesh nor nodal
Explanation: Mesh analysis helps us to utilize the different voltages in the circuit as well as the IR products in the circuit which is nothing but KVL.
Sanfoundry Global Education & Learning Series – Basic Electrical Engineering.
To practice all areas of Basic Electrical Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.