17 Lecture
PHY301
Midterm & Final Term Short Notes
Examples of Loop Analysis
Loop analysis, also known as Kirchhoff’s Voltage Law (KVL), is a powerful tool in circuit theory that allows engineers and technicians to analyze and solve complex electrical circuits.
Important Mcq's
Midterm & Finalterm Prepration
Past papers included
Download PDF
In the circuit shown below, what is the current flowing through the 6ohm resistor?
10 V



 
 
 4 ohm 
 
 



6 ohm





a) 0.25 A
b) 0.5 A
c) 1 A
d) 2 A
Answer: b) 0.5 A
In the circuit shown below, what is the voltage across the 2ohm resistor?


3V


 
 
 4 ohm 
 
 


2 ohm





a) 0.5 V
b) 1 V
c) 1.5 V
d) 2 V
Answer: c) 1.5 V
In the circuit shown below, what is the voltage across the 5ohm resistor?
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5V


 
 
 3 ohm 
 
 


5 ohm





a) 1 V
b) 2 V
c) 3 V
d) 4 V
Answer: d) 4 V
In the circuit shown below, what is the current flowing through the 10ohm resistor?
lua
Copy code


2V


 
 
 6 ohm 
 
 


10 ohm





a) 0.1 A
b) 0.2 A
c) 0.3 A
d) 0.4 A
Answer: c) 0.3 A
In the circuit shown below, what is the voltage across the 4ohm resistor?
lua
10V



 
 
 3 ohm 
 
 


4 ohm





a) 2 V
b) 4 V
c) 6 V
d) 8 V
Answer: d) 8 V
In the circuit shown below, what is the current flowing through the 2ohm resistor?
lua


6V


 
 
 3 ohm 
 
 


2 ohm





a) 1 A
b) 2 A
c) 3 A
d) 4 A
Answer: b) 2 A
In the circuit shown below, what is the voltage across the 6ohm resistor?
markdown


9
Subjective Short Notes
Midterm & Finalterm Prepration
Past papers included
Download PDF
What are coupling equations?
A: Coupling equations are a set of mathematical expressions used to describe the interaction between different modes in a system.
In which fields are coupling equations commonly used?
A: Coupling equations are commonly used in fields such as optics, electromagnetics, and acoustics.
What is the basic idea behind coupling equations?
A: The basic idea behind coupling equations is that when two modes are present in a system, they interact with each other, which leads to a transfer of energy between the modes.
How are coupling equations used to describe the behavior of resonators in a waveguide?
A: In a coupled resonator optical waveguide (CROW), the interaction between different resonators leads to the formation of photonic bands, which can be described using a set of coupling equations.
How are coupling equations used to describe the behavior of antennas in electromagnetics?
A: In a coupled microstrip antenna array, the interaction between the individual antenna elements leads to the formation of a directional radiation pattern, which can be described using a set of coupling equations.
What is the most common form of coupling equations?
A: The most common form of coupling equations is the coupled mode theory (CMT).
How does CMT assume the coupling between modes in a system?
A: CMT assumes that the modes in a system are weakly coupled, and that the coupling can be described using a linear set of equations.
What is the basic approach of CMT to solve the coupling equations?
A: The basic approach of CMT is to write down a set of equations that describe the behavior of each individual mode in the system, and then to introduce a coupling term that describes the interaction between the different modes.
How are numerical methods used to solve the coupling equations?
A: Numerical methods, such as finite element analysis or the boundary element method, can be used to solve the coupling equations.
What is the benefit of using coupling equations to describe complex systems?
A: Coupling equations provide a powerful tool for describing the behavior of complex systems that involve multiple modes, and can be used to predict the behavior of these systems with a high degree of accuracy.