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EEE Interview Questions VIII

1. What  is Linear Circuit?
     A circuit in which the parameters remains constant with time and do not changes with voltage or current is called Linear Circuit. Linear Circuit always obeys Ohm's law

2. What is non-linear Circuit?
     A circuit in which the parameters does not  remains constant with time and changes continuously  with voltage or current is called Linear Circuit. Linear Circuit does not obeys Ohm's law

3. What is Passive Element?
     Element which is incapable of generating power but has the ability to store, dissipate or release the power is called passive elements. Resistors, capacitors, Diodes are example for passive elements

4. What is Active Element?
    Element which is capable of generating power is called passive elements. Transistors, oscillators, integrated circuits are example for active elements

5.  What is Active Network?
     Network which acts as a source (EMF)or provide energy to the circuit is called Active Network

6. What is Passive Network?
    Network which does not consists of any source (EMF)or do not  provide energy to the circuit is called Passive Network

7. What is Bilateral Circuit?
     Circuits whose characteristics and behavior are  independent of  current direction flowing through various elements present in it is called Bilateral Circuit. It allows the current to flow in both the direction. A circuit consists of only resistors is the best example of Bilateral circuit

8. What is Unilateral Circuit?
     Circuits whose characteristics and behavior are dependent of  current direction flowing through various elements present in it is called Unilateral Circuit. It allows the current to flow in only one direction. A circuit consists of diode is the best example ofUnilateral circuit

9. What are the basic property of Electric Circuit?
  • A circuit should always be a closed path.
  • A circuit should always contains an energy source which acts as a source of electrons
  • Direction of flow of conventional current should be from positive to negative terminal
  • The electric elements should include uncontrolled and controlled source of energy, resistors, capacitors, inductors, etc
  •  Flow of current should lead to potential drop across the various elements
  •  In an electric circuit flow of electrons takes place from the negative terminal to the positive terminal 
10. What are the components should present in electric circuit?
  • Electrical Source (for providing power)
  • Controlling Devices(such as switch, Circuit breaker)
  • Protecting Devices( fuses, MCBs)
  • Conducting path (wires or connectors)
  • Load
11.  What is open circuit?
       Open circuit is disconnected part of any circuit which do not have any current flow in it

12. What is Closed Circuit?
       Closed circuit is one which do not have any discontinuity and have a continuous current flow in it

13. What is Series circuit?
      Circuit in which the elements are connected one by one in series to provide path to the current flow is called as series circuit. In this Current flows through all elements is same where voltage across each element is different

14. What is Parallel circuit?
      Circuit in which the elements are connected in parallel such that the voltage drop across element is same. In this Current flows through all elements is different where voltage across each element is same

15. What is Node?
      A Node is a point in a circuit in which two or  more circuit elements are connected together. Elements may be active or passive. It is like a junction point in a circuit.

16. What is Branch?
      Branch is a part of network that lies between two nodes

17. What is Loop?
      Loop is a closed path in a circuit in which no element or node is encountered more than once

18. What is mesh?
      Mesh is a loop which do not contain any other loop in it

19. What is the fundamental theorem of network topology?
      A network with b branches, n nodes, and l independent loops will satisfy the fundamental theorem of network topology
                                                b = l + n – 1
where, b - number of branches
           n - number of nodes

20. What is Ohm's law?
       At steady temperature the potential difference across the conductor is directly proportional to the current flowing through it.
                                               V = IR

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