Basic Electrical

MCQ – Basic Electrical

 

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#1. Unit of Charge is?

#2. One coulomb of charge is equal to the charge on?

#3. The quantity of electric current which may give painful electric shock?

#4. The specific resistance of a wire depends upon?

#5. Electric charge, Q=

#6. Which material has negative temperature coefficient of resistance?

#7. The resistance of a wire depends upon?

#8. The reciprocal of resistance of a conductor is called?

#9. If three resistor of 4 Ω are connected in parallel, find the effective resistance?

#10. The resistance of a wire is R ohms. it is stretched to double its length. The new resistance of the wire is?

#11. Temperature coefficient of Eureka is?

#12. 2 ohm resistance having current of 2A will dissipate the power of?

#13. If the diameter of a wire is doubled keeping the length constant the resistance ?

#14. Form factor is the ratio of?

#15. The unit of inductance is ?

#16. The resistance of a conductor is independant of….?

incorrect

#17. Conductors having temperature coefficient of resistance is….?

incorrect

#18. A length of wire has resistance of 8 ohms. the resistance of wire of the same material three times as long and twice the cross sectional area will be….?

incorrect

R2 = 1.5×8=12 ohms

#19. Which is the best conductor?

#20. Ohm’s law is applicable to ……?

#21. Two wires of A and B the same material and length of l and 2l have radius r and 2r respectivily. the ratio of their specific resistance is….?

#22. Which of the following factor does not depend on resistance of the conductor?

#23. The equivalent resistance of the parallel circuit is …… than the smallest single resistance?

#24. The total value of two resistance is 25 ohm when connected in series and 6 ohm when connected in parallel. find the value of two resistance?

#25. What is the use of eureka wire?

#26. What is the unit of work done in SI units?

#27. One watt is define as…..?

#28. The commercial unit of electric energy……?

#29. An electric installation consists of 10 light points of 60 watts each, used for only one second. what is the consumed power?

#30. The resistor element used in fan regulator is…..?

#31. Cells are connected in series to….. ?

#32. Electric intensity is expressed as…..?

#33. 2 ohm resistance having current of 2A will dissipate the power of…..?

#34. If the diameter of a wire is doubled keeping the length constant the resistance….?

#35. 1 Joule/Second is equal to……?

#36. Form factor is the ratio of…..?

#37. High rate discharge tester consists of….?

#38. Application of series parallel combination…?

#39. 1 Joule/Second is equal to……?

#40. 1KWh =……Joules ?

#41. Barrier potential of silicon at room temperature of 25°C is……?

#42. Which material is used for making resistors of loading rheostat?

#43. Earthing is necessary to give protection against….?

#44. Electric charge, Q=……?

#45. One coulomb charge is equal to the charge of about……electrons?

#46. The SI unit of pottential difference is….?

#47. You are testing an energy meter of 240 V, 50 Hz, 5A, 750 rev/kWh, for its performance with some load. When the disc rotates 100 revolutions in 10 minute, hat is the energy supplied?

#48. The motion of charged particle is called….?

#49. Hydrel Power station converts…?

#50. The single phase domestic AC power supply voltage in india is….?

#51. Solder is a special mixture of…?

#52. Good conductor of electricity is….?

#53. The force of attraction or repulsion between charges depends on…..?

#54. VOM meter measure…….?

#55. A wire in which the conductor has a break will have….?

#56. Which resistor is commonly used for general purpose applications?

#57. Find the resistor value of a resistor contain colour bands are Brown Black Black Silver?

#58. For measuring an unknown resistance, initially choose…?

#59. For measuring an unknown resistance, initially choose…?

#60. The total resistane of 30 ohms and 40 ohms are connected in parallel is…..?

#61. A network having one or more than one source of emf is known as…… network?

#62. Which of the following is an active element in a circuit?

#63. Thermocouple is based on….?

#64. The unit of inductance is….?

#65. The electric field inside a perfectly conducting media is….?

#66. The total resistane of 30 ohms, 50 ohm and 40 ohms are connected in series is…..?

#67. The reciprocal of resistance is called….?

#68. The unit of frequency is…?

#69. SWG is used to measure….?

#70. Resistance of a copper wire is R, four such wires with the same crosssectional area but twice the length are connected in parallel, the net resistance is…?

Total=2R/4=R/2

#71. One farad =…….?

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