electrical engineering MCQs – Page 221

Practise multiple-choice questions from electrical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

electrical engineering Mcqs

1. economics of power generation 2. analog electronics 3. solid state switching circuits 4. parallel circuits 5. switchgear and protection 6. op amp circuits 7. transistor audio power amplifiers 8. electrostatics 9. heating and welding 10. multi stage transistor amplifiers 11. passive filters 12. network theorems 13. regulated d c power supply 14. a c fundamentals circuits and circuit theory 15. electromagnetic induction 16. power electronics 17. magnetism and electromagnetism 18. transformers 19. modulation and demodulation 20. d c generators 21. semiconductor theory 22. single phase induction motors 23. semiconductor diode 24. hybrid parameters 25. digital electronics 26. oscillators 27. earthing or grounding 28. single stage transistor amplifiers 29. d c motors 30. transistor biasing 31. amplifiers with negative feedback 32. basic electrical 33. electronic instruments 34. synchronous motors 35. field effect transistors fet 36. magnetic circuit 37. control systems 38. industrial drives 39. power generation 40. series parallel circuits 41. transistor tuned amplifiers 42. electrical engineering materials 43. rectifiers and converters 44. integrated circuits 45. scr silicon controlled rectifiers 46. cables 47. polyphase induction motors 48. measurement and instrumentation 49. transistors 50. electrical machine design 51. electrolysis and storage of batteries 52. electric traction 53. transmission and distribution

4401. A linear resistor having 0 < R < o is a______________?
0

A. current controlled resistor

B. voltage controlled resistor

C. both current controlled and voltage controlled resistor

D. none of the above

4402. A terminal where three on more branches meet is known as______________?
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A. combination

B. anode

C. node

D. terminus

4403. Kirchhoff s law is not applicable to circuits with____________?
0

A. lumped parameters

B. distributed parameters

C. passive elements

D. non-linear resistances

4404. The concept on which Superposition theorem is based on_____________?
0

A. duality

B. non-linearity

C. reciprocity

D. linearity

4405. Which of the following is non-linear circuit parameter?
0

A. Wire wound resistor

B. Transistor

C. Condenser

D. Inductance

4406. The number of independent equations to solve a network is equal to_____________?
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A. the number of chords

B. the number of branches

C. sum of number of branches, chords and nodes

D. sum of the number of branches and chords

4407. Millmans theorem yields____________?
0

A. equivalent impedance

B. equivalent voltage source

C. equivalent resistance

D. equivalent voltage or current source

4408. Which of the following is the passive element?
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A. Capacitance

B. Ideal voltage source

C. Ideal current source

D. All of the above

4409. A network which contains one or more than one source of e.m.f. is known as___________?
0

A. linear network

B. passive network

C. non-linear network

D. active network

4410. A passive network is one which contains____________?
0

A. no source of e.m.f. in it

B. only some sources of e.m.f. in it

C. only variable resistances

D. only two sources of e.m.f. in it

4411. Efficiency of power transfer when maximum transfer of power c xerosis
0

A. 75%

B. 50%

C. 100%

D. 80%

4412. For maximum transfer of power, internal resistance of the source should be_____________?
0

A. none of the above

B. equal to load resistance

C. less than the load resistance

D. greater than the load resistance

4413. Thevenin resistance Rth is found
0

A. by short-circuiting the given two terminals

B. by removing voltage sources along with their internal resistances

C. between same open terminals as for Etk

D. between any two open terminals

4414. 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:
0

A. Nortons theorem

B. Superposition theorem

C. Thevenins theorem

D. None of the above

4415. Kirchhoffs current law is applicable to only
0

A. electric circuits

B. electronic circuits

C. closed loops in a network

D. junction in a network

4416. Superposition theorem can be applied only to circuits having____________?
0

A. resistive elements

B. passive elements

C. non-linear elements

D. linear bilateral elements

4417. Kirchhoffs voltage law is related to_____________?
0

A. junction currents

B. battery e.m.fs.

C. IR drops

D. both B. and C.

E. none of the above

4418. The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as___________?
0

A. non-linear circuit

B. linear circuit

C. bilateral circuit

D. none of the above

4419. 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:
0

A. Millmans theorem

B. None of the above

C. Maximum power transfer theorem

D. Thevenins theorem

4420. To determine the polarity of the voltage drop across a resistor, it is necessary to know___________?
0

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

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