MCQOPTIONS
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MCQOPTIONS
This section includes 45 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The superposition theorem requires as many circuits to be solved as there are%! |
| A. | Sources, nodes and meshes |
| B. | Sources and nodes |
| C. | Sources |
| D. | Nodes |
| Answer» D. Nodes | |
| 2. |
*$_Superposition theorem can be applied only to circuits having? |
| A. | Resistive elements |
| B. | Passive elements |
| C. | Nonlinear elements |
| D. | Linear bilateral elements |
| Answer» E. | |
| 3. |
*/*_The superposition theorem requires as many circuits to be solved as there are? |
| A. | Sources, nodes and meshes |
| B. | Sources and nodes |
| C. | Sources |
| D. | Nodes |
| Answer» D. Nodes | |
| 4. |
*/*_Which of the following is the passive element?? |
| A. | Capacitance |
| B. | Ideal current source |
| C. | Ideal voltage source |
| D. | All of the above |
| Answer» B. Ideal current source | |
| 5. |
*/*_This mention statement is associated with “Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual currents and source resistance is the parallel combination of individual source resistances”.? |
| A. | Thevenin’s theorem |
| B. | Millman’s theorem |
| C. | Maximum power transfer theorem |
| D. | None of the above |
| Answer» C. Maximum power transfer theorem | |
| 6. |
*/*_Kirchhoff’s current law is applicable to only? |
| A. | Junction in a network |
| B. | Closed loops in a network |
| C. | Electric circuits |
| D. | Electronic circuits |
| Answer» B. Closed loops in a network | |
| 7. |
*/*_Efficiency of power transfer when maximum transfer of power c xerosis? |
| A. | 100% |
| B. | 80% |
| C. | 75% |
| D. | 50% |
| Answer» E. | |
| 8. |
*/*_A star circuit has element of resistance R/2. The equivalent delta elements will be? |
| A. | R/6 |
| B. | RIG |
| C. | 3/2R |
| D. | 4R |
| Answer» D. 4R | |
| 9. |
*/*_For a voltage source? |
| A. | Terminal voltage is always lower than source e.m.f. |
| B. | Terminal voltage cannot be higher than source e.m.f. |
| C. | The source e.m.f. and terminal voltage are equal |
| D. | None of these |
| Answer» C. The source e.m.f. and terminal voltage are equal | |
| 10. |
*/*_The circuit whose properties are same in either direction is known as? |
| A. | Unilateral circuit |
| B. | Bilateral circuit |
| C. | Irreversible circuit |
| D. | Reversible circuit |
| Answer» C. Irreversible circuit | |
| 11. |
*/*_Kirchhoff s law is not applicable to circuits with? |
| A. | Lumped parameters |
| B. | Passive elements |
| C. | Distributed parameters |
| D. | Non-linear resistances |
| Answer» D. Non-linear resistances | |
| 12. |
*/*_Which of the following is not a nonlinear element ?? |
| A. | Gas diode |
| B. | Heater coil |
| C. | Tunnel diode |
| D. | Electric arc |
| Answer» C. Tunnel diode | |
| 13. |
_ A linear resistor having 0 < R < °o is a$? |
| A. | current controlled resistor |
| B. | voltage controlled resistor |
| C. | both current controlled and voltage controlled resistor |
| D. | none of the above |
| Answer» D. none of the above | |
| 14. |
_ Which of the following is not a nonlinear element ?$? |
| A. | Gas diode |
| B. | Heater coil |
| C. | Tunnel diode |
| D. | Electric arc |
| Answer» C. Tunnel diode | |
| 15. |
_ “In any network containing more than one sources of e.m.f. the current in any branch is the algebraic sum of a number of individual fictitious currents (the number being equal to the number of sources of e.m.f.), each of which is due to separate action of each source of e.m.f., taken in order, when the remaining sources of e.m.f. are replaced by conductors, the resistances of which are equal to the internal resistances of the respective sources”.The above statement is associated with$? |
| A. | Thevenin’s theorem |
| B. | Norton’s theorem |
| C. | Superposition theorem |
| D. | None of the above |
| Answer» D. None of the above | |
| 16. |
_ If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is$? |
| A. | 10 Q |
| B. | 20 Q |
| C. | 30 Q |
| D. | 40 Q |
| Answer» D. 40 Q | |
| 17. |
_ This mention statement is associated with “In any network containing more than one sources of e.m.f. the current in any branch is the algebraic sum of a number of individual currents (the number being equal to the number of sources of e.m.f.), each of which is due to separate action of each source of e.m.f., taken order, when the remaining sources of e.m.f. are replaced by conductors, the resistances of which are equal to the internal resistances of the respective sources”.$? |
| A. | Thevenin’s theorem |
| B. | Norton’s theorem |
| C. | Superposition theorem |
| D. | None of the above |
| Answer» D. None of the above | |
| 18. |
_ Which of the following is non-linear circuit parameter?$? |
| A. | Inductance |
| B. | Condenser |
| C. | Wire wound resistor |
| D. | Transistor |
| Answer» B. Condenser | |
| 19. |
_ Kirchhoff’s law is applicable to$? |
| A. | Passive networks only |
| B. | A.C. circuits only |
| C. | D.C. circuits only |
| D. | Both A.C. as well D.C. circuits |
| Answer» E. | |
| 20. |
_ A network which contains one or more than one source of e.m.f. is known as$? |
| A. | Linear network |
| B. | Nonlinear network |
| C. | Passive network |
| D. | Active network |
| Answer» D. Active network | |
| 21. |
_ Choose the incorrect statement.$? |
| A. | A branch formed by the parallel connection of any resistor R and open circuit has the characteristic of an open circuit |
| B. | A branch formed by the parallel connection of any resistor R and a short circuit has the characteristic of a short circuit |
| C. | A branch formed by the series connection of any resistor R and an open circuit has the characteristic of an open circuit |
| D. | A branch formed by the series connection of any resistor R and a short circuit has the characteristic of resistor R |
| Answer» B. A branch formed by the parallel connection of any resistor R and a short circuit has the characteristic of a short circuit | |
| 22. |
_ Which of the following is a bilateral element?$? |
| A. | Constant current source |
| B. | Constant voltage source |
| C. | Capacitance |
| D. | None of the above |
| Answer» D. None of the above | |
| 23. |
_The circuit has resistors, capacitors and semiconductor diodes. The circuit will be known as$? |
| A. | Nonlinear circuit |
| B. | Linear circuit |
| C. | Bilateral circuit |
| D. | None of the above |
| Answer» B. Linear circuit | |
| 24. |
_A closed path made by several branches of the network is known as$? |
| A. | Branch |
| B. | Loop |
| C. | Circuit |
| D. | Junction |
| Answer» C. Circuit | |
| 25. |
“In any linear bilateral network, if a source of e.m.f. E in any branch produces a current I in any other branch, then same e.m.f. acting in the second branch would produce the same current / in the first branch”. The above statement is associated with$? |
| A. | Compensation theorem |
| B. | Superposition theorem |
| C. | Reciprocity theorem |
| D. | None of the above |
| Answer» D. None of the above | |
| 26. |
In Thevenin’s theorem, to find Z$? |
| A. | All independent current sources are short circuited and independent voltage sources are open circuited |
| B. | All independent voltage sources are open circuited and all independent current sources are short circuited |
| C. | All independent voltage and current sources are short circuited |
| D. | All independent voltage sources are short circuited and all independent current sources are open circuited |
| Answer» E. | |
| 27. |
In a series parallel circuit, any two resistances in the same current path must be in$? |
| A. | Series with each other |
| B. | Parallel with each other |
| C. | Series with the voltage source |
| D. | Parallel with the voltage source |
| Answer» B. Parallel with each other | |
| 28. |
A nonlinear network does not satisfy$? |
| A. | Superposition condition |
| B. | Homogeneity condition |
| C. | Both homogeneity as well as superposition condition |
| D. | Homogeneity, superposition and associative condition |
| Answer» D. Homogeneity, superposition and associative condition | |
| 29. |
An ideal voltage source has$? |
| A. | Zero internal resistance |
| B. | Open circuit voltage equal to the voltage on full load |
| C. | Terminal voltage in proportion to current |
| D. | Terminal voltage in proportion to load |
| Answer» B. Open circuit voltage equal to the voltage on full load | |
| 30. |
The resistance LM will be$? |
| A. | 6.66 Q |
| B. | 12 Q |
| C. | 18 Q |
| D. | 20 Q |
| Answer» B. 12 Q | |
| 31. |
Kirchhoff’s voltage law applies to circuits with$? |
| A. | Nonlinear elements only |
| B. | Linear elements only |
| C. | Linear, nonlinear, active and passive elements |
| D. | Linear, nonlinear, active, passive, time varying as wells as time-invariant elements |
| Answer» E. | |
| 32. |
Between the branch voltages of a loop the Kirchhoff's voltage law imposes$? |
| A. | Nonlinear constraints |
| B. | Linear constraints |
| C. | No constraints |
| D. | None of the above |
| Answer» C. No constraints | |
| 33. |
For maximum transfer of power, internal resistance of the source should be? |
| A. | Equal to load resistance |
| B. | Less than the load resistance |
| C. | Greater than the load resistance |
| D. | None of the above |
| Answer» B. Less than the load resistance | |
| 34. |
The number of independent equations to solve a network is equal to |
| A. | The number of chords |
| B. | The number of branches |
| C. | Sum of the number of branches and chords |
| D. | Sum of number of branches, chords and nodes |
| Answer» B. The number of branches | |
| 35. |
“Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen terminals of the load”. The above statement is associated with$ |
| A. | Millman’s theorem |
| B. | Thevenin’s theorem |
| C. | Superposition theorem |
| D. | Maximum power transfer theorem |
| Answer» E. | |
| 36. |
While calculating Rth in Thevenin’s theorem and Norton equivalent$ |
| A. | All independent sources are made dead |
| B. | Only current sources are made dead |
| C. | Only voltage sources are made dead |
| D. | All voltage and current sources are made dead |
| Answer» B. Only current sources are made dead | |
| 37. |
A terminal where three on more branches meet is known as |
| A. | Node |
| B. | Terminus |
| C. | Combination |
| D. | Anode |
| Answer» B. Terminus | |
| 38. |
Application of Norton’s theorem to a circuit yields$ |
| A. | Equivalent current source and impedance in series |
| B. | Equivalent current source and impedance in parallel |
| C. | Equivalent impedance |
| D. | Equivalent current source |
| Answer» B. Equivalent current source and impedance in parallel | |
| 39. |
For high efficiency of transfer of power, internal resistance of the source should be |
| A. | Equal to the load resistance |
| B. | Less than the load resistance |
| C. | More than the load resistance |
| D. | None of the above |
| Answer» C. More than the load resistance | |
| 40. |
According to Kirchhoff’s voltage law, the algebraic sum of all IR drops and e.m.f. in any closed loop of a network is always# |
| A. | Negative |
| B. | Positive |
| C. | Determined by battery e.m.f. |
| D. | Zero |
| Answer» E. | |
| 41. |
A delta circuit has each element of value R/2. The equivalent elements of star circuit with be |
| A. | RIG |
| B. | R/3 |
| C. | 2R |
| D. | 3R |
| Answer» B. R/3 | |
| 42. |
A passive network is one which contains |
| A. | Only variable resistances |
| B. | Only some sources of e.m.f. in it |
| C. | Only two sources of e.m.f. in it |
| D. | No source of e.m.f. in it |
| Answer» E. | |
| 43. |
Millman’s theorem yields# |
| A. | Equivalent resistance |
| B. | Equivalent impedance |
| C. | Equivalent voltage source |
| D. | Equivalent voltage or current source |
| Answer» E. | |
| 44. |
To determine the polarity of the voltage drop across a resistor, it is necessary to know |
| A. | Value of current through the resistor |
| B. | Direction of current through the resistor |
| C. | Value of resistor |
| D. | E.m.f. in the circuit |
| Answer» C. Value of resistor | |
| 45. |
Kirchhoff’s voltage law is related to# |
| A. | Junction currents |
| B. | Battery e.m.f. |
| C. | IR drops |
| D. | Both B and C |
| Answer» E. | |