Basic Electrical

#1. 1.Unit of Charge is?

Ampere

Coulomb

Joule

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

625 x 10^16 electrons

6.25 x 10^16 electrons

62.5 x 10^16 electrons

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

25 mA

50 mA

18 mA

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

its length

its cross sectional area

its material

#5. Electric charge, Q=

Vxt

I x t

V / t

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

Tungsten

Manganin

Mica

#7. The resistance of a wire depends upon?

length & area

temperature & material

length, area, Temperature, Material

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

Conductance

Reluctance

Admittance

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

12 Ω

1.33 Ω

1.8 Ω

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

2R

R/4

4R

#11. Temperature coefficient of Eureka is?

Positive temperature coefficient

Negative temperature coefficient

Almost Zero

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

8W

4W

2W

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

become twice

becomes 4 times

becomes one fourth

#14. Form factor is the ratio of?

average value / rms value

average value / instantaneous value

rms value / average value

#15. The unit of inductance is ?

Ohm

Hentry

Farad

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

material

cross sectional area

temperature

weight and shape of conductor

incorrect

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

zero

positive

negative

none of above

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....?

4 ohm

6 ohm

8 ohm

12 ohm

incorrect

R2 = 1.5×8=12 ohms

#19. Which is the best conductor?

Copper

Silver

Aluminium

Gold

#20. Ohm's law is applicable to ......?

semiconductors

vaccum tubes

electrolyts

none of these

#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....?

1:2

1:3

1:1

2:1

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

length

material

voltage

temperature

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

greater

smaller

equal

half

#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?

19,6 ohm

20,5 ohm

10,15 ohm

12,13 ohm

#25. What is the use of eureka wire?

heating element

earth wire

winding wire

rheostat

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

erg

kg meter

joule

dyne

#27. One watt is define as.....?

joule second

joule per minute

joule per second

joule minute

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

joule

kilowatt hour

watt hour

ampere hour

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

60 watts

6 watts

600 watts

0.6 watts

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

carbon

eureka

nichrome

tungsten

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

decrese the output voltage

increase the output voltage

decrease the internal resistance

increase the current capacity

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

weber

volt/m

emf

coulomb

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

8 W

8 J

2 W

4 W

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

become twice

become one fourth

remains same

becomes 4 times

#35. 1 Joule/Second is equal to......?

Watt

volt

coulomb

ampere

#36. Form factor is the ratio of.....?

average value x rms value

average value / rms value

rms value / average value

rms value x average value

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

high range voltmeter

high range ammeter

low range voltmeter

low range ammeter

#38. Application of series parallel combination...?

current divider

voltage divider

increasing current

power divider

#39. 1 Joule/Second is equal to......?

1Watt

1 Volt

1 Calorie

1 Coulomb

#40. 1KWh =......Joules ?

3.6 x 10^5

36 x 10^6

36 x 10^5

360 x 10^5

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

0.2

0.3

0.7

0.9

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

tungstn

nichrome

brass

constantan

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

short circuit

over loading

electric fire

electric shock

#44. Electric charge, Q=......?

V x t

I x t

V/t

I/t

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

6x10^10

6x10^17

6x10^18

6x10^12

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

volt

ampere

coulomb

tesla

#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?

1.33kWh

0.0133kWh

0.1333kWh

13.3kWh

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

charging

current

voltage

coulomb

#49. Hydrel Power station converts...?

electrical energy into heat energy

light energy into heat energy

water energy into heat energy

hydro energy into electricalt energy

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

200 V

230 V

415 V

440 V

#51. Solder is a special mixture of...?

tin & lead

tin & flux

copper & tin

copper & lead

#52. Good conductor of electricity is....?

silver

copper

aluminium

gold

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

amount of charges

distance between the charges

type of charged material

amount of charges and distance between the charges

#54. VOM meter measure.......?

current

voltage

resistance

all the above

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

low resistance

zero resistance

infinite resistance

less than 1M Ohm resistance

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

carbon resistors

wire wound resistors

metal film resistors

carbon film resistors

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

20 ohms 10%

2 ohms 10%

10 ohms 10%

1 ohms 10%

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

the lowest ohms range

the highest ohms range

any ohms range

none of the above

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

the lowest ohms range

the highest ohms range

any ohms range

none of the above

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

70 ohms

10 ohms

17.1 ohms

71.2 ohms

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

active

passive

linar

nonlinear

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

resistance

inductance

capacitance

current source

#63. Thermocouple is based on....?

Thomson

Joule's

Seebeck effect

none of the above

#64. The unit of inductance is....?

ohm

volt

hentry

farad

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

zero

infinite

depend the value of charge

none of the above

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

100 ohms

120 ohms

15 ohms

26 ohms

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

hentry

conductance

impedence

coulomb

#68. The unit of frequency is...?

ohm

joules

hertz

watts

#69. SWG is used to measure....?

resistance

diameter

insulation

none of these

#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...?

R

R/2

R/4

R/8

Total=2R/4=R/2

#71. One farad =.......?

one coulomb / second

one coulomb / volt

one joule / second

one joule / volt

Basic Electrical

Results

#1. 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....?

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

#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....?

#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...?

#71. One farad =.......?

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