MCQOPTIONS
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MCQOPTIONS
This section includes 35 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
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.fs. in the circuit |
| Answer» C. value of resistor | |
| 2. |
The superposition theorem is applicable to____________? |
| A. | linear, non-linear and time variant responses |
| B. | linear and non-linear resistors only |
| C. | linear responses only |
| D. | none of the above |
| Answer» D. none of the above | |
| 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. |
The resistance LM will be____________? |
| A. | 6.66 Q |
| B. | 12 Q |
| C. | 18Q |
| D. | 20Q |
| Answer» B. 12 Q | |
| 5. |
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 | |
| 6. |
The concept on which Superposition theorem is based on_____________? |
| A. | reciprocity |
| B. | duality |
| C. | non-linearity |
| D. | linearity |
| Answer» E. | |
| 7. |
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 | |
| 8. |
The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as___________? |
| A. | non-linear circuit |
| B. | linear circuit |
| C. | bilateral circuit |
| D. | none of the above |
| Answer» B. linear circuit | |
| 9. |
Millman’s theorem yields____________? |
| A. | equivalent resistance |
| B. | equivalent impedance |
| C. | equivalent voltage source |
| D. | equivalent voltage or current source |
| Answer» E. | |
| 10. |
“Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen from the 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. | |
| 11. |
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. | |
| 12. |
Kirchhoffs voltage law is related to_____________? |
| A. | junction currents |
| B. | battery e.m.fs. |
| C. | IR drops |
| D. | both B. and C. |
| E. | none of the above |
| Answer» E. none of the above | |
| 13. |
Kirchhoff s voltage law applies to circuits with____________? |
| A. | nonlinear elements only |
| B. | linear elements only |
| C. | linear, non-linear, active and passive elements |
| D. | linear, non-linear, active, passive, time varying as wells as time-in-variant elements |
| Answer» E. | |
| 14. |
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 | |
| 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. |
“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”._x005F_x000D_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 | |
| 17. |
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 | |
| 18. |
If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be___________? |
| A. | a voltage source |
| B. | a current source |
| C. | both of above |
| D. | none of the above |
| Answer» B. a current source | |
| 19. |
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 | |
| 20. |
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 | |
| 21. |
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 | |
| 22. |
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 |
| Answer» C. the source e.m.f. and terminal voltage are equal | |
| 23. |
Choose the incorrect statement: A branch formed by the parallel connection. |
| 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. | |
| 24. |
Between the branch voltages of a loop the Kirchhoff s voltage law imposes_____________? |
| A. | non-linear constraints |
| B. | linear constraints |
| C. | no constraints |
| D. | none of the above |
| Answer» C. no constraints | |
| 25. |
Application of Norton’s theorem to a circuit yields:________________? |
| A. | equivalent current source and impedance in parallel |
| B. | equivalent current source and impedance in series |
| C. | equivalent impedance |
| D. | equivalent current source |
| Answer» B. equivalent current source and impedance in series | |
| 26. |
“Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances”. This statement is associated with: |
| A. | Thevenin’s theorem |
| B. | Millman’s theorem |
| C. | Maximum power transfer theorem |
| D. | None of the above |
| Answer» C. Maximum power transfer theorem | |
| 27. |
An ideal voltage source should have______________? |
| A. | large value of e.m.f. |
| B. | small value of e.m.f. |
| C. | zero source resistance |
| D. | infinite source resistance |
| Answer» D. infinite source resistance | |
| 28. |
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 | |
| 29. |
According to Kirchhoffs voltage law, the algebraic sum of all IR drops and e.m.fs. in any closed loop of a network is always____________? |
| A. | negative |
| B. | positive |
| C. | determined by battery e.m.fs. |
| D. | zero |
| Answer» E. | |
| 30. |
A terminal where three on more branches meet is known as______________? |
| A. | node |
| B. | terminus |
| C. | combination |
| D. | anode |
| Answer» B. terminus | |
| 31. |
A star circuit has element of resistance R/2. The equivalent delta elements will be_____________? |
| A. | R/6 |
| B. | fi? |
| C. | 2R |
| D. | 4R |
| Answer» C. 2R | |
| 32. |
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. | |
| 33. |
A non-linear 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 | |
| 34. |
A network which contains one or more than one source of e.m.f. is known as___________? |
| A. | linear network |
| B. | non-linear network |
| C. | passive network |
| D. | active network |
| Answer» E. | |
| 35. |
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 | |