electrical engineering MCQs – Page 209

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 Review each marked answer and report any item that may be outdated or unclear.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 generation2. analog electronics3. solid state switching circuits4. parallel circuits5. switchgear and protection6. op amp circuits7. transistor audio power amplifiers8. electrostatics9. heating and welding10. multi stage transistor amplifiers11. passive filters12. network theorems13. regulated d c power supply14. a c fundamentals circuits and circuit theory15. electromagnetic induction16. power electronics17. magnetism and electromagnetism18. transformers19. modulation and demodulation20. d c generators21. semiconductor theory22. single phase induction motors23. semiconductor diode24. hybrid parameters25. digital electronics26. oscillators27. earthing or grounding28. single stage transistor amplifiers29. d c motors30. transistor biasing31. amplifiers with negative feedback32. basic electrical33. electronic instruments34. synchronous motors35. field effect transistors fet36. magnetic circuit37. control systems38. industrial drives39. power generation40. series parallel circuits41. transistor tuned amplifiers42. electrical engineering materials43. rectifiers and converters44. integrated circuits45. scr silicon controlled rectifiers46. cables47. polyphase induction motors48. measurement and instrumentation49. transistors50. electrical machine design51. electrolysis and storage of batteries52. electric traction53. transmission and distribution
4161. An uncharged conductor is placed near a charged conductor, then_____________?
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A. the uncharged conductor is attracted first and then charged by induction

B. it remains as such

C. the uncharged conductor gets charged by induction and then attracted towards the charging body

D. the uncharged conductor gets charged by conduction

4162. Air capacitors are generally available in the range_________?
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A. 100 to 900 pF

B. 20 to 100 pF

C. 1 to 20 pF

D. 10 to 400 pF
4163. The inverse of capacitance is called_______________?
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A. conductance

B. reluctance

C. elastance

D. susceptance

4164. The ohmmeter reading for a short circuited capacitor is____________?
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A. few megohms

B. zero

C. infinity

D. few kilo ohms

4165. An electrolytic capacitor is generally made to provide__________?
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A. variable capacitance

B. low capacitance

C. fixed capacitance

D. large value of capacitance
4166. capacitors can be used only for D.C ?
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A. Electrolytic

B. Paper

C. Mica

D. Air

4167. Electric field intensity is a quantity_____________?
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A. scalar

B. vector

C. both A. and (6)

D. none of the above

4168. Which of the following capacitors has relatively shorter shelf life____________?
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A. Ceramic capacitor

B. Electrolytic capacitor

C. Paper capacitor

D. Mica capacitor

4169. at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point ?
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A. None of the above

B. Magnetic flux density

C. Electric intensity

D. Electric flux

4170. In order to remove static electricity from machinery___________?
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A. ground the framework

B. construct insulated cabins

C. insulate the machinery

D. humidify the surroundings

4171. When a dielectric is placed in an electric field the field strength____________?
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A. reduces to zero

B. increases

C. decreases

D. remain unchanged

4172. Two similar charges each of one coulomb placed in air one meter apart repel each other with a force______________?
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A. 9.2 x 104N

B. 9 x 107N

C. 9 x 109N

D. 9 x 109N
4173. The number of Faraday tubes of flux passing through a surface in an electric field is called____________?
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A. electric charge density

B. electric flux density

C. electric flux

D. magnetic flux density

4174. In a capacitor the electric charge is stored in____________?
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A. metal plates

B. dielectric

C. both (A) and (B)

D. none of the above

4175. The direction of electric field due +0 positive charge is ___________?
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A. away from the charge

B. towards the charge

C. both A. and (6)

D. none of the above

4176. A capacitor consists of_____________?
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A. two conductors only

B. two conductors separated by an insulator

C. two insulators only

D. two insulators separated by a conductor

4177. Which is the most superior dielectric out of the following ?
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A. Glass

B. Bakelite

C. Paper

D. Air

4178. Potential difference is the work done in moving unit positive charge form one point to another________________?
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A. in the direction of electric intensity

B. against electric intensity

C. in the direction of electric flux

D. in any direction

4179. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ________?
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A. 50

B. 200

C. 100

D. 150

4180. Capacitance increases with_____________?
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A. increase in plate area and decrease in distance between the plates

B. decrease in plate area and value of applied voltage

C. reduction in plate area and distance between the plates

D. increase in plate area and distance between the plates